{
 "schema_version": "0.1",
 "site": "www.cdc.gov",
 "scan_week": "2026-W27",
 "generated_at": "2026-09-30T18:09:37.136Z",
 "source_files": [
  "docs/reports/www.cdc.gov/2026-W27/",
  "data/www.cdc.gov/findings.json",
  "data/www.cdc.gov/2026-W27/summary.json"
 ],
 "summary": {
  "pages_known": 40472,
  "pages_scanned_this_week": 1667,
  "pages_with_known_issues": 39122,
  "findings": 73,
  "clusters": 58,
  "new_findings": 0,
  "persistent_findings": 60,
  "high_priority_findings": 41
 },
 "top_risks": [
  {
   "finding_id": "VS-f18df681",
   "rule_id": "region",
   "rule_label": "All page content should be contained by landmarks",
   "severity": "Serious",
   "priority": "p1",
   "trend": "persistent",
   "pages_affected": 1580,
   "rationale": "Serious severity; affects 1580 pages; persistent across weeks",
   "top_url": "https://www.cdc.gov/lab-training"
  },
  {
   "finding_id": "VS-be8d563e",
   "rule_id": "color-contrast",
   "rule_label": "Elements must meet minimum color contrast ratio thresholds",
   "severity": "Serious",
   "priority": "p1",
   "trend": "worsening",
   "pages_affected": 372,
   "rationale": "Serious severity; affects 372 pages; worsening trend",
   "top_url": "https://www.cdc.gov/pcd/issues/2012/11_0127_es.htm"
  },
  {
   "finding_id": "VS-9074b4dd",
   "rule_id": "image-alt",
   "rule_label": "Images must have alternative text",
   "severity": "Critical",
   "priority": "p1",
   "trend": "worsening",
   "pages_affected": 352,
   "rationale": "Critical severity; affects 352 pages; worsening trend",
   "top_url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00050429.htm"
  },
  {
   "finding_id": "VS-c126b6a6",
   "rule_id": "html-has-lang",
   "rule_label": "<html> element must have a lang attribute",
   "severity": "Serious",
   "priority": "p1",
   "trend": "persistent",
   "pages_affected": 333,
   "rationale": "Serious severity; affects 333 pages; persistent across weeks",
   "top_url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00050429.htm"
  },
  {
   "finding_id": "VS-e9fe47ac",
   "rule_id": "link-name",
   "rule_label": "Links must have discernible text",
   "severity": "Serious",
   "priority": "p1",
   "trend": "persistent",
   "pages_affected": 120,
   "rationale": "Serious severity; affects 120 pages; persistent across weeks",
   "top_url": "https://www.cdc.gov/pcd/issues/2012/11_0127_es.htm"
  },
  {
   "finding_id": "VS-33841929",
   "rule_id": "label-title-only",
   "rule_label": "Form elements should have a visible label",
   "severity": "Serious",
   "priority": "p1",
   "trend": "persistent",
   "pages_affected": 67,
   "rationale": "Serious severity; persistent across weeks",
   "top_url": "https://www.cdc.gov/pcd/issues/2008/oct/07_0169_fr.htm"
  },
  {
   "finding_id": "VS-fafffee0",
   "rule_id": "label",
   "rule_label": "Form elements must have labels",
   "severity": "Critical",
   "priority": "p1",
   "trend": "persistent",
   "pages_affected": 65,
   "rationale": "Critical severity; persistent across weeks",
   "top_url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6019a2.htm?s_cid=mm6019a2_w"
  },
  {
   "finding_id": "VS-a0bdbdf6",
   "rule_id": "list",
   "rule_label": "<ul> and <ol> must only directly contain <li>, <script> or <template> elements",
   "severity": "Serious",
   "priority": "p1",
   "trend": "persistent",
   "pages_affected": 25,
   "rationale": "Serious severity; persistent across weeks",
   "top_url": "https://www.cdc.gov/infection-control/hcp/healthcare-personnel-epidemiology-control/measles.html"
  },
  {
   "finding_id": "VS-8ade3360",
   "rule_id": "link-in-text-block",
   "rule_label": "Links must be distinguishable without relying on color",
   "severity": "Serious",
   "priority": "p1",
   "trend": "persistent",
   "pages_affected": 25,
   "rationale": "Serious severity; persistent across weeks",
   "top_url": "https://www.cdc.gov/infection-control/hcp/healthcare-personnel-epidemiology-control/measles.html"
  },
  {
   "finding_id": "VS-3f76c7ea",
   "rule_id": "frame-title",
   "rule_label": "Frames must have an accessible name",
   "severity": "Serious",
   "priority": "p1",
   "trend": "persistent",
   "pages_affected": 13,
   "rationale": "Serious severity; persistent across weeks",
   "top_url": "http://www.cdc.gov/global-hiv-tb/php/resources/video.html"
  }
 ],
 "findings": [
  {
   "finding_id": "VS-f18df681",
   "fingerprint": "09987718",
   "rule_id": "region",
   "rule_label": "All page content should be contained by landmarks",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Best Practice",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/region?application=axeAPI",
   "severity": "Serious",
   "priority": "p1",
   "confidence": "high",
   "rationale": "Serious severity; affects 1580 pages; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 1580,
    "affected_pages_previous": 2928
   },
   "frequency": {
    "instances": 12091,
    "pages_affected": 1580,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "All page content should be contained by landmarks (WCAG criterion undetermined)",
   "description": "All page content should be contained by landmarks. Detected by axe-core rule region on 1580 of 1667 scanned pages (12091 instances).",
   "remediation_tip": "Wrap all page content in landmarks (header, nav, main, footer) so users can navigate by region.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/region?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule region.",
   "actual_behavior": "All page content should be contained by landmarks. Detected by axe-core rule region on 1580 of 1667 scanned pages (12091 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/lab-training",
    "https://www.cdc.gov/swine-flu/php/guidance/case-definitions-influenza-a-h3n2v-virus.html",
    "https://www.cdc.gov/niosh/docket/archive/docket229A.html"
   ],
   "html_fragments": [
    {
     "fingerprint": "105ae389",
     "html": "<div class=\"cdc-site-gov-notice noindex noprint\" aria-label=\"Official website of the United States government\">",
     "selectors": [
      ".cdc-site-gov-notice"
     ]
    },
    {
     "fingerprint": "370dae42",
     "html": "<div class=\"col-lg-3 site-footer__heading\n\t\t\t\t\t\">",
     "selectors": [
      ".site-footer__heading"
     ]
    },
    {
     "fingerprint": "c569c3d7",
     "html": "<div class=\"row site-footer__links\">",
     "selectors": [
      ".site-footer__links"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/lab-training",
     "count": 1
    },
    {
     "pattern": "/swine-flu/php/guidance/case-definitions-influenza-a-h3n2v-virus.html",
     "count": 1
    },
    {
     "pattern": "/niosh/docket/archive/docket229A.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-be8d563e",
   "fingerprint": "1820bc84",
   "rule_id": "color-contrast",
   "rule_label": "Elements must meet minimum color contrast ratio thresholds",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": "1.4.3",
   "wcag_name": "Contrast (Minimum)",
   "wcag_level": "AA",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 AA",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/color-contrast?application=axeAPI",
   "severity": "Serious",
   "priority": "p1",
   "confidence": "high",
   "rationale": "Serious severity; affects 372 pages; worsening trend",
   "trend": {
    "status": "worsening",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 372,
    "affected_pages_previous": 570
   },
   "frequency": {
    "instances": 545,
    "pages_affected": 372,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Elements must meet minimum color contrast ratio thresholds (WCAG 1.4.3)",
   "description": "Elements must meet minimum color contrast ratio thresholds. Detected by axe-core rule color-contrast on 372 of 1667 scanned pages (545 instances).",
   "remediation_tip": "Increase the contrast between text and its background to at least 4.5:1 (3:1 for large text). Check both light and dark modes.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/color-contrast?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule color-contrast (WCAG 1.4.3).",
   "actual_behavior": "Elements must meet minimum color contrast ratio thresholds. Detected by axe-core rule color-contrast on 372 of 1667 scanned pages (545 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/pcd/issues/2012/11_0127_es.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00050429.htm",
    "https://www.cdc.gov/pcd/issues/2012/11_0260_es.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "35f7414c",
     "html": "<span class=\"wm-label\" style=\"position: absolute; left: 3px; display: inline; cursor: text; color: rgb(204, 204, 204);\">Escoja un tema</span>",
     "selectors": [
      ".wm-label"
     ]
    },
    {
     "fingerprint": "ded6b5b6",
     "html": "<font color=\"red\">Persons using assistive technology might not be able to fully access information in this file. For assistance, please send e-mail to: </font>",
     "selectors": [
      "a[name=\"content_area\"] > font[color=\"red\"]"
     ]
    },
    {
     "fingerprint": "0400c071",
     "html": "<font color=\"red\"><a href=\"mailto:mmwrq@cdc.gov\">mmwrq@cdc.gov</a>. Type 508 Accommodation and the title of the report in the subject line of e-mail.</font>",
     "selectors": [
      "p > font[color=\"red\"]"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
     "count": 10
    },
    {
     "pattern": "/pcd/issues/{id}/{id}_0127_es.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/{id}_0260_es.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "WPC",
      "group": "Without color perception",
      "prevalence": 0.045,
      "percent": "4.5%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Limited vision (2.4%), Without color perception (4.5%)."
   }
  },
  {
   "finding_id": "VS-9074b4dd",
   "fingerprint": "f1846b41",
   "rule_id": "image-alt",
   "rule_label": "Images must have alternative text",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": "1.1.1",
   "wcag_name": "Non-text Content",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/image-alt?application=axeAPI",
   "severity": "Critical",
   "priority": "p1",
   "confidence": "high",
   "rationale": "Critical severity; affects 352 pages; worsening trend",
   "trend": {
    "status": "worsening",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 352,
    "affected_pages_previous": 588
   },
   "frequency": {
    "instances": 3273,
    "pages_affected": 352,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Images must have alternative text (WCAG 1.1.1)",
   "description": "Images must have alternative text. Detected by axe-core rule image-alt on 352 of 1667 scanned pages (3273 instances).",
   "remediation_tip": "Give every <img> a meaningful alt attribute. Use alt=\"\" only for decorative images so screen readers skip them.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/image-alt?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule image-alt (WCAG 1.1.1).",
   "actual_behavior": "Images must have alternative text. Detected by axe-core rule image-alt on 352 of 1667 scanned pages (3273 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00050429.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00001976.htm",
    "https://www.cdc.gov/pcd/issues/2008/oct/07_0169_fr.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "55592187",
     "html": "<img src=\"../../images/spacer.gif\" width=\"10\" height=\"1\" alt=\" \" border=\"0\">",
     "selectors": [
      "td[rowspan=\"2\"][width=\"10\"]:nth-child(1) > img[alt=\" \"][width=\"10\"][src$=\"spacer.gif\"]",
      "td[rowspan=\"2\"][width=\"10\"]:nth-child(3) > img[alt=\" \"][width=\"10\"][src$=\"spacer.gif\"]"
     ]
    },
    {
     "fingerprint": "4aaf1f7d",
     "html": "<img src=\"../../images/spacer.gif\" width=\"1\" height=\"10\" alt=\" \" border=\"0\">",
     "selectors": [
      "img[height=\"10\"][alt=\" \"][src$=\"spacer.gif\"]"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
     "count": 12
    },
    {
     "pattern": "/pcd/issues/{id}/oct/{id}_0169_fr.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5710md.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-c126b6a6",
   "fingerprint": "b6dc10f1",
   "rule_id": "html-has-lang",
   "rule_label": "<html> element must have a lang attribute",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": "3.1.1",
   "wcag_name": "Language of Page",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/html-has-lang?application=axeAPI",
   "severity": "Serious",
   "priority": "p1",
   "confidence": "high",
   "rationale": "Serious severity; affects 333 pages; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 333,
    "affected_pages_previous": 589
   },
   "frequency": {
    "instances": 333,
    "pages_affected": 333,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "<html> element must have a lang attribute (WCAG 3.1.1)",
   "description": "<html> element must have a lang attribute. Detected by axe-core rule html-has-lang on 333 of 1667 scanned pages (333 instances).",
   "remediation_tip": "Add a lang attribute to <html> (e.g. lang=\"en\").",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/html-has-lang?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule html-has-lang (WCAG 3.1.1).",
   "actual_behavior": "<html> element must have a lang attribute. Detected by axe-core rule html-has-lang on 333 of 1667 scanned pages (333 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00050429.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00001976.htm",
    "https://www.cdc.gov/pcd/issues/2008/oct/07_0169_fr.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "3e866d4c",
     "html": "<html>",
     "selectors": [
      "html"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
     "count": 12
    },
    {
     "pattern": "/pcd/issues/{id}/oct/{id}_0169_fr.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5710md.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-e9fe47ac",
   "fingerprint": "f85a6839",
   "rule_id": "link-name",
   "rule_label": "Links must have discernible text",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": "2.4.4",
   "wcag_name": "Link Purpose (In Context)",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/link-name?application=axeAPI",
   "severity": "Serious",
   "priority": "p1",
   "confidence": "high",
   "rationale": "Serious severity; affects 120 pages; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 120,
    "affected_pages_previous": 239
   },
   "frequency": {
    "instances": 235,
    "pages_affected": 120,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Links must have discernible text (WCAG 2.4.4)",
   "description": "Links must have discernible text. Detected by axe-core rule link-name on 120 of 1667 scanned pages (235 instances).",
   "remediation_tip": "Give the link discernible text. Avoid empty links and icon-only links without an aria-label.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/link-name?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule link-name (WCAG 2.4.4).",
   "actual_behavior": "Links must have discernible text. Detected by axe-core rule link-name on 120 of 1667 scanned pages (235 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/pcd/issues/2012/11_0127_es.htm",
    "https://www.cdc.gov/pcd/issues/2012/11_0260_es.htm",
    "https://www.cdc.gov/pcd/issues/2008/oct/07_0169_fr.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "1034d767",
     "html": "<a href=\"http://www.cdc.gov/email.do\" onclick=\"openRequestedPopup(); return false;\" class=\"noLinking\">&nbsp;</a>",
     "selectors": [
      "a[href$=\"email.do\"]"
     ]
    },
    {
     "fingerprint": "b261204c",
     "html": "<a href=\"javascript:window.print();\" class=\"noLinking\">&nbsp;</a>",
     "selectors": [
      ".noLinking[href=\"javascript:window.print();\"]"
     ]
    },
    {
     "fingerprint": "94d163c5",
     "html": "<a href=\"http://www.cdc.gov/\"><img src=\"http://www.cdc.gov/navimages/nav21.gif\" border=\"0\" alt=\" \" width=\"140\" height=\"8\"></a>",
     "selectors": [
      "table[cellpadding=\"0\"]:nth-child(2) > tbody > tr > td[width=\"140\"] > a[href$=\"cdc.gov/\"]"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/pcd/issues/{id}/{id}_0127_es.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/{id}_0260_es.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/oct/{id}_0169_fr.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-33841929",
   "fingerprint": "e18c0475",
   "rule_id": "label-title-only",
   "rule_label": "Form elements should have a visible label",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Best Practice",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/label-title-only?application=axeAPI",
   "severity": "Serious",
   "priority": "p1",
   "confidence": "high",
   "rationale": "Serious severity; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 67,
    "affected_pages_previous": 155
   },
   "frequency": {
    "instances": 67,
    "pages_affected": 67,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Form elements should have a visible label (WCAG criterion undetermined)",
   "description": "Form elements should have a visible label. Detected by axe-core rule label-title-only on 67 of 1667 scanned pages (67 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/label-title-only?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule label-title-only.",
   "actual_behavior": "Form elements should have a visible label. Detected by axe-core rule label-title-only on 67 of 1667 scanned pages (67 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/pcd/issues/2008/oct/07_0169_fr.htm",
    "https://www.cdc.gov/pcd/issues/2008/jan/07_0154_fr.htm",
    "https://www.cdc.gov/pcd/issues/2008/jan/06_0153_zhs.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "2611ae77",
     "html": "<input class=\"smallfield\" type=\"text\" name=\"email\" size=\"15\" title=\"Insérer un courriel\" value=\"Insérer un courriel\" onfocus=\"this.value=''\">",
     "selectors": [
      ".smallfield"
     ]
    },
    {
     "fingerprint": "f64166dc",
     "html": "<input class=\"smallfield\" type=\"text\" name=\"email\" size=\"15\" title=\"插入电子邮件\" value=\"插入电子邮件\" onfocus=\"this.value=''\">",
     "selectors": [
      ".smallfield"
     ]
    },
    {
     "fingerprint": "bbf5e953",
     "html": "<input class=\"smallfield\" type=\"text\" name=\"email\" size=\"15\" title=\"Insertar e-mail\" value=\"Insertar e-mail\" onfocus=\"this.value=''\">",
     "selectors": [
      ".smallfield"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/pcd/issues/{id}/oct/{id}_0169_fr.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/jan/{id}_0154_fr.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/jan/{id}_0153_zhs.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-fafffee0",
   "fingerprint": "d5e15238",
   "rule_id": "label",
   "rule_label": "Form elements must have labels",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": "4.1.2",
   "wcag_name": "Name, Role, Value",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/label?application=axeAPI",
   "severity": "Critical",
   "priority": "p1",
   "confidence": "high",
   "rationale": "Critical severity; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 65,
    "affected_pages_previous": 162
   },
   "frequency": {
    "instances": 65,
    "pages_affected": 65,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Form elements must have labels (WCAG 4.1.2)",
   "description": "Form elements must have labels. Detected by axe-core rule label on 65 of 1667 scanned pages (65 instances).",
   "remediation_tip": "Associate every form control with a <label> (via for/id) or an aria-label/aria-labelledby.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/label?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule label (WCAG 4.1.2).",
   "actual_behavior": "Form elements must have labels. Detected by axe-core rule label on 65 of 1667 scanned pages (65 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6019a2.htm?s_cid=mm6019a2_w",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5907a5.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5902a3.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "9aa28fe9",
     "html": "<input id=\"searchBox\" class=\"searchBox\" name=\"query\" maxlength=\"256\" type=\"text\" style=\"width: 230px;\">",
     "selectors": [
      "#searchBox"
     ]
    },
    {
     "fingerprint": "2894a461",
     "html": "<input type=\"text\" class=\"email\" id=\"Email\" name=\"email\" value=\"\" onfocus=\"this.value=''\">",
     "selectors": [
      "#Email"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm6019a2.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5907a5.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5902a3.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LM",
      "group": "Limited manipulation/strength",
      "prevalence": 0.13,
      "percent": "13.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%)."
   }
  },
  {
   "finding_id": "VS-a0bdbdf6",
   "fingerprint": "ca0fa40f",
   "rule_id": "list",
   "rule_label": "<ul> and <ol> must only directly contain <li>, <script> or <template> elements",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": "1.3.1",
   "wcag_name": "Info and Relationships",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/list?application=axeAPI",
   "severity": "Serious",
   "priority": "p1",
   "confidence": "high",
   "rationale": "Serious severity; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 25,
    "affected_pages_previous": 24
   },
   "frequency": {
    "instances": 31,
    "pages_affected": 25,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "<ul> and <ol> must only directly contain <li>, <script> or <template> elements (WCAG 1.3.1)",
   "description": "<ul> and <ol> must only directly contain <li>, <script> or <template> elements. Detected by axe-core rule list on 25 of 1667 scanned pages (31 instances).",
   "remediation_tip": "Use <ul>/<ol> with only <li> children for lists; don't fake lists with <div>s.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/list?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule list (WCAG 1.3.1).",
   "actual_behavior": "<ul> and <ol> must only directly contain <li>, <script> or <template> elements. Detected by axe-core rule list on 25 of 1667 scanned pages (31 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/infection-control/hcp/healthcare-personnel-epidemiology-control/measles.html",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00016174.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00020301.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "34cea4c3",
     "html": "<ul>",
     "selectors": [
      "li:nth-child(3) > ul"
     ]
    },
    {
     "fingerprint": "0fd146d6",
     "html": "<ol type=\"1\">",
     "selectors": [
      "ol",
      "ol[type=\"1\"]:nth-child(13)"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
     "count": 17
    },
    {
     "pattern": "/bird-flu/prevention/worker-protection-ppe.html",
     "count": 2
    },
    {
     "pattern": "/infection-control/hcp/healthcare-personnel-epidemiology-control/measles.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-8ade3360",
   "fingerprint": "8bf51706",
   "rule_id": "link-in-text-block",
   "rule_label": "Links must be distinguishable without relying on color",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": "1.4.1",
   "wcag_name": "Use of Color",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/link-in-text-block?application=axeAPI",
   "severity": "Serious",
   "priority": "p1",
   "confidence": "high",
   "rationale": "Serious severity; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 25,
    "affected_pages_previous": 60
   },
   "frequency": {
    "instances": 39,
    "pages_affected": 25,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Links must be distinguishable without relying on color (WCAG 1.4.1)",
   "description": "Links must be distinguishable without relying on color. Detected by axe-core rule link-in-text-block on 25 of 1667 scanned pages (39 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/link-in-text-block?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule link-in-text-block (WCAG 1.4.1).",
   "actual_behavior": "Links must be distinguishable without relying on color. Detected by axe-core rule link-in-text-block on 25 of 1667 scanned pages (39 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/infection-control/hcp/healthcare-personnel-epidemiology-control/measles.html",
    "https://www.cdc.gov/hepatitis/php/npr-2025/hep-b-reduce-deaths-api.html",
    "https://www.cdc.gov/vaccine-safety/vaccines/hepatitis-b.html"
   ],
   "html_fragments": [
    {
     "fingerprint": "1ca4dacf",
     "html": "<a class=\"all-pages\" href=\"#toc\">All pages <span class=\"cdc-fa-arrow-down-long\"></span></a>",
     "selectors": [
      ".all-pages"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/infection-control/hcp/healthcare-personnel-epidemiology-control/measles.html",
     "count": 1
    },
    {
     "pattern": "/hepatitis/php/npr-2025/hep-b-reduce-deaths-api.html",
     "count": 1
    },
    {
     "pattern": "/vaccine-safety/vaccines/hepatitis-b.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WPC",
      "group": "Without color perception",
      "prevalence": 0.045,
      "percent": "4.5%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without color perception (4.5%), Limited vision (2.4%)."
   }
  },
  {
   "finding_id": "VS-3f76c7ea",
   "fingerprint": "fbb98de4",
   "rule_id": "frame-title",
   "rule_label": "Frames must have an accessible name",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": "4.1.2",
   "wcag_name": "Name, Role, Value",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/frame-title?application=axeAPI",
   "severity": "Serious",
   "priority": "p1",
   "confidence": "high",
   "rationale": "Serious severity; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 13,
    "affected_pages_previous": 24
   },
   "frequency": {
    "instances": 42,
    "pages_affected": 13,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Frames must have an accessible name (WCAG 4.1.2)",
   "description": "Frames must have an accessible name. Detected by axe-core rule frame-title on 13 of 1667 scanned pages (42 instances).",
   "remediation_tip": "Give every <iframe> a descriptive title attribute.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/frame-title?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule frame-title (WCAG 4.1.2).",
   "actual_behavior": "Frames must have an accessible name. Detected by axe-core rule frame-title on 13 of 1667 scanned pages (42 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "http://www.cdc.gov/global-hiv-tb/php/resources/video.html",
    "https://www.cdc.gov/tobacco/php/multimedia-and-tools/mcrc-overview.html",
    "https://www.cdc.gov/diabetes-state-local/php/strategy-resources/screening-testing-and-referral.html"
   ],
   "html_fragments": [
    {
     "fingerprint": "76174d8b",
     "html": "<iframe src=\"//www.youtube-nocookie.com/embed/UZSu5BeVWNQ?autohide=0&enablejsapi=1&modestbranding=1&rel=0&origin=https://www.cdc.gov?autohide=0&enablejsapi=1&modestbranding=1&rel=0&origin=https://www.",
     "selectors": [
      "div[data-yt-id=\"UZSu5BeVWNQ\"] > iframe"
     ]
    },
    {
     "fingerprint": "91bace66",
     "html": "<iframe src=\"//www.youtube-nocookie.com/embed/3Z9Pvg8c5sk?autohide=0&enablejsapi=1&modestbranding=1&rel=0&origin=https://www.cdc.gov?autohide=0&enablejsapi=1&modestbranding=1&rel=0&origin=https://www.",
     "selectors": [
      "div[data-yt-id=\"3Z9Pvg8c5sk\"] > iframe"
     ]
    },
    {
     "fingerprint": "9406d45f",
     "html": "<iframe src=\"//www.youtube-nocookie.com/embed/GRQv8Z0ZVCc?autohide=0&enablejsapi=1&modestbranding=1&rel=0&origin=https://www.cdc.gov?autohide=0&enablejsapi=1&modestbranding=1&rel=0&origin=https://www.",
     "selectors": [
      ".dfe-block--cdcmodule.dfe-block:nth-child(4) > .cdc-youtube-embed > iframe"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/global-hiv-tb/php/resources/video.html",
     "count": 1
    },
    {
     "pattern": "/tobacco/php/multimedia-and-tools/mcrc-overview.html",
     "count": 1
    },
    {
     "pattern": "/diabetes-state-local/php/strategy-resources/screening-testing-and-referral.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LM",
      "group": "Limited manipulation/strength",
      "prevalence": 0.13,
      "percent": "13.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%)."
   }
  },
  {
   "finding_id": "VS-4b45acfe",
   "fingerprint": "149fb8e2",
   "rule_id": "blink",
   "rule_label": "<blink> elements are deprecated and must not be used",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": "2.2.2",
   "wcag_name": "Pause, Stop, Hide",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/blink?application=axeAPI",
   "severity": "Serious",
   "priority": "p1",
   "confidence": "medium",
   "rationale": "Serious severity; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W25",
    "last_observed": "2026-W27",
    "weeks_observed": 3,
    "affected_pages_current": 9,
    "affected_pages_previous": 9
   },
   "frequency": {
    "instances": 12,
    "pages_affected": 9,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "<blink> elements are deprecated and must not be used (WCAG 2.2.2)",
   "description": "<blink> elements are deprecated and must not be used. Detected by axe-core rule blink on 9 of 1667 scanned pages (12 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/blink?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule blink (WCAG 2.2.2).",
   "actual_behavior": "<blink> elements are deprecated and must not be used. Detected by axe-core rule blink on 9 of 1667 scanned pages (12 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5407a1.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5650a6.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5701a8.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "f81786c8",
     "html": "<blink><big>Please note: </big></blink>",
     "selectors": [
      "i > font[color=\"#FF0000\"] > blink"
     ]
    },
    {
     "fingerprint": "e4fef150",
     "html": "<blink><big><strong>Disclaimer</strong></big></blink>",
     "selectors": [
      "p:nth-child(258) > font[color=\"#FF0000\"] > blink",
      "blink",
      "p:nth-child(128) > font[color=\"#FF0000\"] > blink"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/rr5407a1.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5650a6.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5701a8.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-07ba3b17",
   "fingerprint": "993f6ba8",
   "rule_id": "td-headers-attr",
   "rule_label": "Table cell headers attributes must refer to other <th> elements in the same tabl",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": "1.3.1",
   "wcag_name": "Info and Relationships",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/td-headers-attr?application=axeAPI",
   "severity": "Serious",
   "priority": "p1",
   "confidence": "medium",
   "rationale": "Serious severity; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W25",
    "last_observed": "2026-W27",
    "weeks_observed": 3,
    "affected_pages_current": 6,
    "affected_pages_previous": 19
   },
   "frequency": {
    "instances": 8,
    "pages_affected": 6,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Table cell headers attributes must refer to other <th> elements in the same tabl (WCAG 1.3.1)",
   "description": "Table cell headers attributes must refer to other <th> elements in the same tabl. Detected by axe-core rule td-headers-attr on 6 of 1667 scanned pages (8 instances).",
   "remediation_tip": "Associate data cells with their headers correctly using headers/id or scope.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/td-headers-attr?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule td-headers-attr (WCAG 1.3.1).",
   "actual_behavior": "Table cell headers attributes must refer to other <th> elements in the same tabl. Detected by axe-core rule td-headers-attr on 6 of 1667 scanned pages (8 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/ncird/surveillance/respiratory-illnesses/index.html",
    "https://www.cdc.gov/brfss/acbs/2024/prevalence_tables/table3_LLCP.html",
    "https://www.cdc.gov/childvaxview/publications-resources/nis-child-2016-2018.html"
   ],
   "html_fragments": [
    {
     "fingerprint": "d600f65c",
     "html": "<table class=\"table table-sm table-bordered nein-scroll fs08\">",
     "selectors": [
      "div[data-section=\"cdc_generic_section_6\"] > .dfe-block.dfe-block--cdcmodule.cdc_raw_html > .dfe-block.dfe-block--cdcmodule.cdc_raw_html > table",
      "div[data-section=\"cdc_generic_section_8\"] > .dfe-block.dfe-block--cdcmodule.cdc_raw_html > .dfe-block.dfe-block--cdcmodule.cdc_raw_html > table"
     ]
    },
    {
     "fingerprint": "a3a63532",
     "html": "<table>",
     "selectors": [
      "table"
     ]
    },
    {
     "fingerprint": "039e53e1",
     "html": "<table class=\"table\">",
     "selectors": [
      "table"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/ncird/surveillance/respiratory-illnesses/index.html",
     "count": 1
    },
    {
     "pattern": "/brfss/acbs/{id}/prevalence_tables/table3_LLCP.html",
     "count": 1
    },
    {
     "pattern": "/childvaxview/publications-resources/nis-child-2016-2018.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-c613c153",
   "fingerprint": "364ee5cc",
   "rule_id": "scrollable-region-focusable",
   "rule_label": "Scrollable region must have keyboard access",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": "2.1.1",
   "wcag_name": "Keyboard",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/scrollable-region-focusable?application=axeAPI",
   "severity": "Serious",
   "priority": "p1",
   "confidence": "medium",
   "rationale": "Serious severity; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 5,
    "affected_pages_previous": 25
   },
   "frequency": {
    "instances": 14,
    "pages_affected": 5,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Scrollable region must have keyboard access (WCAG 2.1.1)",
   "description": "Scrollable region must have keyboard access. Detected by axe-core rule scrollable-region-focusable on 5 of 1667 scanned pages (14 instances).",
   "remediation_tip": "Make scrollable regions keyboard-focusable (tabindex=\"0\") so keyboard users can scroll them.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/scrollable-region-focusable?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule scrollable-region-focusable (WCAG 2.1.1).",
   "actual_behavior": "Scrollable region must have keyboard access. Detected by axe-core rule scrollable-region-focusable on 5 of 1667 scanned pages (14 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/tb/hcp/treatment/tuberculosis-disease.html",
    "https://www.cdc.gov/tb-programs/php/evaluation/diabetes-example.html",
    "https://www.cdc.gov/fluview/surveillance/2026-week-07.html"
   ],
   "html_fragments": [
    {
     "fingerprint": "186bd8d7",
     "html": "<div style=\"overflow-x: auto;\">",
     "selectors": [
      ".table-responsive > div",
      "div[data-section=\"cdc_generic_section_7\"] > .dfe-block.dfe-block--cdcmodule.cdc_page_element > .dfe-block__inner > .cdc-textblock > div",
      ".cdc_page_element.dfe-block--cdcmodule.dfe-block--width-standard:nth-child(5) > .dfe-block__inner > .cdc-textblock > div"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/tb/hcp/treatment/tuberculosis-disease.html",
     "count": 1
    },
    {
     "pattern": "/tb-programs/php/evaluation/diabetes-example.html",
     "count": 1
    },
    {
     "pattern": "/fluview/surveillance/{id}-week-07.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LM",
      "group": "Limited manipulation/strength",
      "prevalence": 0.13,
      "percent": "13.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LR",
      "group": "Limited reach",
      "prevalence": 0.02,
      "percent": "2.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited manipulation/strength (13.0%), Limited reach (2.0%)."
   }
  },
  {
   "finding_id": "VS-5c82bd60",
   "fingerprint": "c0b3c60a",
   "rule_id": "aria-command-name",
   "rule_label": "ARIA commands must have an accessible name",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": "4.1.2",
   "wcag_name": "Name, Role, Value",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/aria-command-name?application=axeAPI",
   "severity": "Serious",
   "priority": "p1",
   "confidence": "medium",
   "rationale": "Serious severity; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 4,
    "affected_pages_previous": 8
   },
   "frequency": {
    "instances": 48,
    "pages_affected": 4,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "ARIA commands must have an accessible name (WCAG 4.1.2)",
   "description": "ARIA commands must have an accessible name. Detected by axe-core rule aria-command-name on 4 of 1667 scanned pages (48 instances).",
   "remediation_tip": "Give the command (button/link/menuitem) an accessible name via text or aria-label.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/aria-command-name?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule aria-command-name (WCAG 4.1.2).",
   "actual_behavior": "ARIA commands must have an accessible name. Detected by axe-core rule aria-command-name on 4 of 1667 scanned pages (48 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/hepatitis/php/npr-2025/hep-b-reduce-deaths-api.html",
    "https://www.cdc.gov/hepatitis/php/npr-2023/hep-c-reduce-infections.html",
    "https://www.cdc.gov/hepatitis/php/npr-2025/hep-b-reduce-deaths.html"
   ],
   "html_fragments": [
    {
     "fingerprint": "88103dec",
     "html": "<span role=\"button\" class=\"sort-icon\"><svg class=\"up\" xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 10 5\"><path d=\"M0 5l5-5 5 5z\"></path></svg><svg class=\"down\" xmlns=\"http://www.w3.org/2000/svg\" vi",
     "selectors": [
      "th:nth-child(1) > .sort-icon[role=\"button\"]",
      "th:nth-child(2) > .sort-icon[role=\"button\"]",
      "th:nth-child(3) > .sort-icon[role=\"button\"]"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/hepatitis/php/npr-2025/hep-b-reduce-deaths-api.html",
     "count": 1
    },
    {
     "pattern": "/hepatitis/php/npr-2023/hep-c-reduce-infections.html",
     "count": 1
    },
    {
     "pattern": "/hepatitis/php/npr-2025/hep-b-reduce-deaths.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LM",
      "group": "Limited manipulation/strength",
      "prevalence": 0.13,
      "percent": "13.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%)."
   }
  },
  {
   "finding_id": "VS-58301a87",
   "fingerprint": "345a6415",
   "rule_id": "nested-interactive",
   "rule_label": "Interactive controls must not be nested",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": "4.1.2",
   "wcag_name": "Name, Role, Value",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/nested-interactive?application=axeAPI",
   "severity": "Serious",
   "priority": "p1",
   "confidence": "medium",
   "rationale": "Serious severity; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 3,
    "affected_pages_previous": 6
   },
   "frequency": {
    "instances": 10,
    "pages_affected": 3,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Interactive controls must not be nested (WCAG 4.1.2)",
   "description": "Interactive controls must not be nested. Detected by axe-core rule nested-interactive on 3 of 1667 scanned pages (10 instances).",
   "remediation_tip": "Don't nest interactive controls (e.g. a button inside a link); split them apart.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/nested-interactive?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule nested-interactive (WCAG 4.1.2).",
   "actual_behavior": "Interactive controls must not be nested. Detected by axe-core rule nested-interactive on 3 of 1667 scanned pages (10 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/nhsn/training/continuing-edu/cbts.html",
    "https://www.cdc.gov/niosh/ocas",
    "https://www.cdc.gov/alcohol/ardi/methods.html"
   ],
   "html_fragments": [
    {
     "fingerprint": "6681087d",
     "html": "<div class=\"card-header h4 bg-white rounded-0\" role=\"tab\" id=\"acc-header-8\" href=\"#acc-panel-8\" data-toggle=\"collapse\" data-parent=\"#accordion-8\" aria-controls=\"acc-panel-8\" aria-expanded=\"true\"><butt",
     "selectors": [
      "#acc-header-8"
     ]
    },
    {
     "fingerprint": "d06ae1e4",
     "html": "<div class=\"card-header h4 bg-white rounded-0\" role=\"tab\" id=\"acc-header-9\" href=\"#acc-panel-9\" data-toggle=\"collapse\" data-parent=\"#accordion-9\" aria-controls=\"acc-panel-9\" aria-expanded=\"true\"><butt",
     "selectors": [
      "#acc-header-9"
     ]
    },
    {
     "fingerprint": "4c62cfdb",
     "html": "<div class=\"card-header h4 bg-white rounded-0\" role=\"tab\" id=\"acc-header-10\" href=\"#acc-panel-10\" data-toggle=\"collapse\" data-parent=\"#accordion-10\" aria-controls=\"acc-panel-10\" aria-expanded=\"true\"><",
     "selectors": [
      "#acc-header-10"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/nhsn/training/continuing-edu/cbts.html",
     "count": 1
    },
    {
     "pattern": "/niosh/ocas",
     "count": 1
    },
    {
     "pattern": "/alcohol/ardi/methods.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LM",
      "group": "Limited manipulation/strength",
      "prevalence": 0.13,
      "percent": "13.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%)."
   }
  },
  {
   "finding_id": "VS-6175596b",
   "fingerprint": "7ac6b8df",
   "rule_id": "listitem",
   "rule_label": "<li> elements must be contained in a <ul> or <ol>",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": "1.3.1",
   "wcag_name": "Info and Relationships",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/listitem?application=axeAPI",
   "severity": "Serious",
   "priority": "p1",
   "confidence": "low",
   "rationale": "Serious severity; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 2,
    "affected_pages_previous": 3
   },
   "frequency": {
    "instances": 18,
    "pages_affected": 2,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "<li> elements must be contained in a <ul> or <ol> (WCAG 1.3.1)",
   "description": "<li> elements must be contained in a <ul> or <ol>. Detected by axe-core rule listitem on 2 of 1667 scanned pages (18 instances).",
   "remediation_tip": "<li> must be inside a <ul> or <ol>.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/listitem?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule listitem (WCAG 1.3.1).",
   "actual_behavior": "<li> elements must be contained in a <ul> or <ol>. Detected by axe-core rule listitem on 2 of 1667 scanned pages (18 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/typhoid-fever/prevention/index.html",
    "https://www.cdc.gov/group-b-strep/es/prevention/prevencion-enfermedad-por-estreptococo-grupo-b-recien-nacidos.html"
   ],
   "html_fragments": [
    {
     "fingerprint": "b7db6d9c",
     "html": "<li>People who are 6 years or older</li>",
     "selectors": [
      ".table.dfe-table.table-no-header:nth-child(7) > .table-body[role=\"rowgroup\"] > .table-row.row[role=\"row\"]:nth-child(1) > .table-col[data-col=\"2\"][role=\"cell\"] > li"
     ]
    },
    {
     "fingerprint": "cbe2a83f",
     "html": "<li>4 pills taken by mouth</li>",
     "selectors": [
      ".table.dfe-table.table-no-header:nth-child(7) > .table-body[role=\"rowgroup\"] > .table-row.row[role=\"row\"]:nth-child(2) > .table-col[data-col=\"2\"][role=\"cell\"] > li"
     ]
    },
    {
     "fingerprint": "f30613fb",
     "html": "<li>1 pill every other day</li>",
     "selectors": [
      ".table.dfe-table.table-no-header:nth-child(7) > .table-body[role=\"rowgroup\"] > .table-row.row[role=\"row\"]:nth-child(3) > .table-col[data-col=\"2\"][role=\"cell\"] > li"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/typhoid-fever/prevention/index.html",
     "count": 1
    },
    {
     "pattern": "/group-b-strep/es/prevention/prevencion-enfermedad-por-estreptococo-grupo-b-recien-nacidos.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-9429bb8d",
   "fingerprint": "d9ef25ac",
   "rule_id": "aria-required-children",
   "rule_label": "Certain ARIA roles must contain particular children",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": "1.3.1",
   "wcag_name": "Info and Relationships",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/aria-required-children?application=axeAPI",
   "severity": "Critical",
   "priority": "p1",
   "confidence": "low",
   "rationale": "Critical severity; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W25",
    "last_observed": "2026-W27",
    "weeks_observed": 3,
    "affected_pages_current": 1,
    "affected_pages_previous": 1
   },
   "frequency": {
    "instances": 14,
    "pages_affected": 1,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Certain ARIA roles must contain particular children (WCAG 1.3.1)",
   "description": "Certain ARIA roles must contain particular children. Detected by axe-core rule aria-required-children on 1 of 1667 scanned pages (14 instances).",
   "remediation_tip": "Add the child roles this container role requires (e.g. a list needs listitem children).",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/aria-required-children?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule aria-required-children (WCAG 1.3.1).",
   "actual_behavior": "Certain ARIA roles must contain particular children. Detected by axe-core rule aria-required-children on 1 of 1667 scanned pages (14 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/nhsn/training/continuing-edu/cbts.html"
   ],
   "html_fragments": [
    {
     "fingerprint": "e9c56822",
     "html": "<div class=\"accordion indicator-plus accordion-white mb3\" id=\"accordion-8\" role=\"tablist\">",
     "selectors": [
      "#accordion-8",
      "#accordion-9"
     ]
    },
    {
     "fingerprint": "8ce5419f",
     "html": "<div class=\"collapse show\" id=\"acc-panel-8\" role=\"tablist\" aria-labelledby=\"acc-header-8\">",
     "selectors": [
      "#acc-panel-8"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/nhsn/training/continuing-edu/cbts.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-fab92378",
   "fingerprint": "56ca23c2",
   "rule_id": "select-name",
   "rule_label": "Select element must have an accessible name",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": "4.1.2",
   "wcag_name": "Name, Role, Value",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/select-name?application=axeAPI",
   "severity": "Critical",
   "priority": "p1",
   "confidence": "low",
   "rationale": "Critical severity; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W25",
    "last_observed": "2026-W27",
    "weeks_observed": 3,
    "affected_pages_current": 1,
    "affected_pages_previous": 3
   },
   "frequency": {
    "instances": 3,
    "pages_affected": 1,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Select element must have an accessible name (WCAG 4.1.2)",
   "description": "Select element must have an accessible name. Detected by axe-core rule select-name on 1 of 1667 scanned pages (3 instances).",
   "remediation_tip": "Give the <select> an accessible name via a <label> or aria-label.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/select-name?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule select-name (WCAG 4.1.2).",
   "actual_behavior": "Select element must have an accessible name. Detected by axe-core rule select-name on 1 of 1667 scanned pages (3 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/nchs/hus/data-finder.htm?subject=Health+insurance"
   ],
   "html_fragments": [
    {
     "fingerprint": "c288a54c",
     "html": "<select id=\"year_group\" class=\"filter_dropdowns\" style=\"width:100%\">",
     "selectors": [
      "#year_group",
      "#subject_group",
      "#population_group"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/nchs/hus/data-finder.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LM",
      "group": "Limited manipulation/strength",
      "prevalence": 0.13,
      "percent": "13.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%)."
   }
  },
  {
   "finding_id": "VS-c80d5faa",
   "fingerprint": "1fd7726a",
   "rule_id": "document-title",
   "rule_label": "Documents must have <title> element to aid in navigation",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": "2.4.2",
   "wcag_name": "Page Titled",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/document-title?application=axeAPI",
   "severity": "Serious",
   "priority": "p1",
   "confidence": "low",
   "rationale": "Serious severity; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W25",
    "last_observed": "2026-W27",
    "weeks_observed": 2,
    "affected_pages_current": 1,
    "affected_pages_previous": null
   },
   "frequency": {
    "instances": 1,
    "pages_affected": 1,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Documents must have <title> element to aid in navigation (WCAG 2.4.2)",
   "description": "Documents must have <title> element to aid in navigation. Detected by axe-core rule document-title on 1 of 1667 scanned pages (1 instances).",
   "remediation_tip": "Give the page a unique, descriptive <title>.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/document-title?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule document-title (WCAG 2.4.2).",
   "actual_behavior": "Documents must have <title> element to aid in navigation. Detected by axe-core rule document-title on 1 of 1667 scanned pages (1 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5906a6.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "700ea598",
     "html": "<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\" id=\"js\">",
     "selectors": [
      "#js"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5906a6.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-cb53cc4d",
   "fingerprint": "1738fa81",
   "rule_id": "sia-r111",
   "rule_label": "Target size is at least 44×44 CSS pixels (Enhanced)",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "2.5.5",
   "wcag_name": "Target Size (Enhanced)",
   "wcag_level": "AAA",
   "wcag_version": "2.1",
   "wcag_category": "WCAG 2.x AAA",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r111",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "affects 781 pages; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 781,
    "affected_pages_previous": 728
   },
   "frequency": {
    "instances": 23048,
    "pages_affected": 781,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Target size is at least 44×44 CSS pixels (Enhanced) (WCAG 2.5.5)",
   "description": "Target size is at least 44×44 CSS pixels (Enhanced). Detected by Siteimprove Alfa rule sia-r111 on 781 of 1667 scanned pages (23048 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r111",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r111 (WCAG 2.5.5).",
   "actual_behavior": "Target size is at least 44×44 CSS pixels (Enhanced). Detected by Siteimprove Alfa rule sia-r111 on 781 of 1667 scanned pages (23048 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/restaurant-food-safety/php/practices/index.html",
    "https://www.cdc.gov/nchs/nsfg/key_statistics/i-keystat.htm",
    "https://www.cdc.gov/ecoli/outbreaks/map-organic-walnuts-04-24.html"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/restaurant-food-safety/php/practices/index.html",
     "count": 1
    },
    {
     "pattern": "/nchs/nsfg/key_statistics/i-keystat.htm",
     "count": 1
    },
    {
     "pattern": "/ecoli/outbreaks/map-organic-walnuts-04-24.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-646b1e0b",
   "fingerprint": "afad441e",
   "rule_id": "sia-r66",
   "rule_label": "Text has enhanced contrast",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "1.4.6",
   "wcag_name": "Contrast (Enhanced)",
   "wcag_level": "AAA",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.x AAA",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r66",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "affects 634 pages",
   "trend": {
    "status": "improving",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 634,
    "affected_pages_previous": 619
   },
   "frequency": {
    "instances": 20477,
    "pages_affected": 634,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Text has enhanced contrast (WCAG 1.4.6)",
   "description": "Text has enhanced contrast. Detected by Siteimprove Alfa rule sia-r66 on 634 of 1667 scanned pages (20477 instances).",
   "remediation_tip": "Increase text contrast to meet WCAG AAA (7:1).",
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r66",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r66 (WCAG 1.4.6).",
   "actual_behavior": "Text has enhanced contrast. Detected by Siteimprove Alfa rule sia-r66 on 634 of 1667 scanned pages (20477 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/restaurant-food-safety/php/practices/index.html",
    "https://www.cdc.gov/nchs/nsfg/key_statistics/i-keystat.htm",
    "https://www.cdc.gov/ecoli/outbreaks/map-organic-walnuts-04-24.html"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/restaurant-food-safety/php/practices/index.html",
     "count": 1
    },
    {
     "pattern": "/nchs/nsfg/key_statistics/i-keystat.htm",
     "count": 1
    },
    {
     "pattern": "/ecoli/outbreaks/map-organic-walnuts-04-24.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-c18be945",
   "fingerprint": "8634e2fd",
   "rule_id": "sia-r57",
   "rule_label": "Scrolling content can be accessed by keyboard",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r57",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "affects 556 pages; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 556,
    "affected_pages_previous": 528
   },
   "frequency": {
    "instances": 8111,
    "pages_affected": 556,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Scrolling content can be accessed by keyboard (WCAG criterion undetermined)",
   "description": "Scrolling content can be accessed by keyboard. Detected by Siteimprove Alfa rule sia-r57 on 556 of 1667 scanned pages (8111 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r57",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r57.",
   "actual_behavior": "Scrolling content can be accessed by keyboard. Detected by Siteimprove Alfa rule sia-r57 on 556 of 1667 scanned pages (8111 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/restaurant-food-safety/php/practices/index.html",
    "https://www.cdc.gov/nchs/nsfg/key_statistics/i-keystat.htm",
    "https://www.cdc.gov/ecoli/outbreaks/map-organic-walnuts-04-24.html"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/restaurant-food-safety/php/practices/index.html",
     "count": 1
    },
    {
     "pattern": "/nchs/nsfg/key_statistics/i-keystat.htm",
     "count": 1
    },
    {
     "pattern": "/ecoli/outbreaks/map-organic-walnuts-04-24.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-d25f622d",
   "fingerprint": "98ff321a",
   "rule_id": "heading-order",
   "rule_label": "Heading levels should only increase by one",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Best Practice",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/heading-order?application=axeAPI",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "affects 536 pages; worsening trend",
   "trend": {
    "status": "worsening",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 536,
    "affected_pages_previous": 880
   },
   "frequency": {
    "instances": 760,
    "pages_affected": 536,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Heading levels should only increase by one (WCAG criterion undetermined)",
   "description": "Heading levels should only increase by one. Detected by axe-core rule heading-order on 536 of 1667 scanned pages (760 instances).",
   "remediation_tip": "Use heading levels in order (h1 → h2 → h3) without skipping; structure, not size.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/heading-order?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule heading-order.",
   "actual_behavior": "Heading levels should only increase by one. Detected by axe-core rule heading-order on 536 of 1667 scanned pages (760 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/niosh/docket/archive/docket229A.html",
    "https://www.cdc.gov/nchs/nsfg/key_statistics/i-keystat.htm",
    "https://www.cdc.gov/pcd/issues/2012/11_0127_es.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "2c4dfd0c",
     "html": "<h6 class=\"float-right\">August 2013</h6>",
     "selectors": [
      ".float-right"
     ]
    },
    {
     "fingerprint": "62190e66",
     "html": "<h4><a id=\"intendbirthbywomen\" name=\"intendbirthbywomen\"></a> <!-- -->Intendedness of births as reported by women</h4>",
     "selectors": [
      "h4:nth-child(41)"
     ]
    },
    {
     "fingerprint": "35e40e21",
     "html": "<h4>Bryan J. Weiner, PhD; Lindsey Haynes-Maslow, MHA; Leila C. Kahwati, MD,   \tMPH; Linda S. Kinsinger, MD, MPH; Marci K. Campbell, PhD</h4>",
     "selectors": [
      "h4"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
     "count": 4
    },
    {
     "pattern": "/niosh/docket/archive/docket229A.html",
     "count": 1
    },
    {
     "pattern": "/nchs/nsfg/key_statistics/i-keystat.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-8806389c",
   "fingerprint": "ffb2ae06",
   "rule_id": "landmark-unique",
   "rule_label": "Landmarks should have a unique role or role/label/title (i.e. accessible name) c",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Best Practice",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/landmark-unique?application=axeAPI",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "affects 475 pages",
   "trend": {
    "status": "improving",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 475,
    "affected_pages_previous": 977
   },
   "frequency": {
    "instances": 478,
    "pages_affected": 475,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Landmarks should have a unique role or role/label/title (i.e. accessible name) c (WCAG criterion undetermined)",
   "description": "Landmarks should have a unique role or role/label/title (i.e. accessible name) c. Detected by axe-core rule landmark-unique on 475 of 1667 scanned pages (478 instances).",
   "remediation_tip": "When a landmark role/type repeats (e.g. two <nav>s), give each a distinct accessible name with aria-label or aria-labelledby (e.g. \"Primary\" and \"Footer\" navigation) so screen-reader users can tell them apart.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/landmark-unique?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule landmark-unique.",
   "actual_behavior": "Landmarks should have a unique role or role/label/title (i.e. accessible name) c. Detected by axe-core rule landmark-unique on 475 of 1667 scanned pages (478 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/lab-training",
    "https://www.cdc.gov/restaurant-food-safety/php/practices/index.html",
    "https://www.cdc.gov/flu/prevent/keyfacts.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "ef2863bd",
     "html": "<aside class=\"page-right-rail__static noindex\" role=\"complementary\" style=\"margin-top: 47px;\">",
     "selectors": [
      ".page-right-rail__static"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/lab-training",
     "count": 1
    },
    {
     "pattern": "/restaurant-food-safety/php/practices/index.html",
     "count": 1
    },
    {
     "pattern": "/flu/prevent/keyfacts.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-d5d82446",
   "fingerprint": "3627341e",
   "rule_id": "landmark-one-main",
   "rule_label": "Document should have one main landmark",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Best Practice",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/landmark-one-main?application=axeAPI",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "affects 426 pages; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 426,
    "affected_pages_previous": 799
   },
   "frequency": {
    "instances": 426,
    "pages_affected": 426,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Document should have one main landmark (WCAG criterion undetermined)",
   "description": "Document should have one main landmark. Detected by axe-core rule landmark-one-main on 426 of 1667 scanned pages (426 instances).",
   "remediation_tip": "Each page should have exactly one <main> landmark.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/landmark-one-main?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule landmark-one-main.",
   "actual_behavior": "Document should have one main landmark. Detected by axe-core rule landmark-one-main on 426 of 1667 scanned pages (426 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/pcd/issues/2012/11_0127_es.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00050429.htm",
    "https://www.cdc.gov/pcd/issues/2012/11_0260_es.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "788ecee3",
     "html": "<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\">",
     "selectors": [
      "html"
     ]
    },
    {
     "fingerprint": "3e866d4c",
     "html": "<html>",
     "selectors": [
      "html"
     ]
    },
    {
     "fingerprint": "700ea598",
     "html": "<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\" id=\"js\">",
     "selectors": [
      "#js"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
     "count": 8
    },
    {
     "pattern": "/pcd/issues/{id}/{id}_0127_es.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/{id}_0260_es.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-e05344b9",
   "fingerprint": "9d7a222a",
   "rule_id": "sia-r18",
   "rule_label": "aria attribute is permitted for element role",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r18",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "affects 391 pages; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 391,
    "affected_pages_previous": 365
   },
   "frequency": {
    "instances": 404,
    "pages_affected": 391,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "aria attribute is permitted for element role (WCAG criterion undetermined)",
   "description": "aria attribute is permitted for element role. Detected by Siteimprove Alfa rule sia-r18 on 391 of 1667 scanned pages (404 instances).",
   "remediation_tip": "Only use ARIA states/properties that are allowed on this element/role.",
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r18",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r18.",
   "actual_behavior": "aria attribute is permitted for element role. Detected by Siteimprove Alfa rule sia-r18 on 391 of 1667 scanned pages (404 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/restaurant-food-safety/php/practices/index.html",
    "https://www.cdc.gov/ecoli/outbreaks/map-organic-walnuts-04-24.html",
    "https://www.cdc.gov/pcd/issues/2012/11_0127_es.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/restaurant-food-safety/php/practices/index.html",
     "count": 1
    },
    {
     "pattern": "/ecoli/outbreaks/map-organic-walnuts-04-24.html",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/{id}_0127_es.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-2208081b",
   "fingerprint": "40bbca09",
   "rule_id": "sia-r73",
   "rule_label": "Text has minimum contrast ratio of 4.5:1",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "1.4.8",
   "wcag_name": "Visual Presentation",
   "wcag_level": "AAA",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.x AAA",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r73",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "affects 297 pages; worsening trend",
   "trend": {
    "status": "worsening",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 297,
    "affected_pages_previous": 241
   },
   "frequency": {
    "instances": 37668,
    "pages_affected": 297,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Text has minimum contrast ratio of 4.5:1 (WCAG 1.4.8)",
   "description": "Text has minimum contrast ratio of 4.5:1. Detected by Siteimprove Alfa rule sia-r73 on 297 of 1667 scanned pages (37668 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r73",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r73 (WCAG 1.4.8).",
   "actual_behavior": "Text has minimum contrast ratio of 4.5:1. Detected by Siteimprove Alfa rule sia-r73 on 297 of 1667 scanned pages (37668 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/pcd/issues/2012/11_0127_es.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00050429.htm",
    "https://www.cdc.gov/pcd/issues/2012/11_0260_es.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
     "count": 6
    },
    {
     "pattern": "/pcd/issues/{id}/{id}_0127_es.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/{id}_0260_es.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-fbf54eba",
   "fingerprint": "773d6316",
   "rule_id": "sia-r74",
   "rule_label": "Link is distinguishable without relying on color",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "1.4.8",
   "wcag_name": "Visual Presentation",
   "wcag_level": "AAA",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.x AAA",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r74",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "affects 292 pages",
   "trend": {
    "status": "improving",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 292,
    "affected_pages_previous": 324
   },
   "frequency": {
    "instances": 19489,
    "pages_affected": 292,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Link is distinguishable without relying on color (WCAG 1.4.8)",
   "description": "Link is distinguishable without relying on color. Detected by Siteimprove Alfa rule sia-r74 on 292 of 1667 scanned pages (19489 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r74",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r74 (WCAG 1.4.8).",
   "actual_behavior": "Link is distinguishable without relying on color. Detected by Siteimprove Alfa rule sia-r74 on 292 of 1667 scanned pages (19489 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/restaurant-food-safety/php/practices/index.html",
    "https://www.cdc.gov/pcd/issues/2012/11_0127_es.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00050429.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
     "count": 6
    },
    {
     "pattern": "/restaurant-food-safety/php/practices/index.html",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/{id}_0127_es.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-179ad9b3",
   "fingerprint": "0e001fcc",
   "rule_id": "sia-r113",
   "rule_label": "Target size is at least 24×24 CSS pixels or has spacing (Minimum)",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "2.5.8",
   "wcag_name": "Target Size (Minimum)",
   "wcag_level": "AA",
   "wcag_version": "2.2",
   "wcag_category": "WCAG 2.2 AA",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r113",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "affects 285 pages; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 285,
    "affected_pages_previous": 265
   },
   "frequency": {
    "instances": 2638,
    "pages_affected": 285,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Target size is at least 24×24 CSS pixels or has spacing (Minimum) (WCAG 2.5.8)",
   "description": "Target size is at least 24×24 CSS pixels or has spacing (Minimum). Detected by Siteimprove Alfa rule sia-r113 on 285 of 1667 scanned pages (2638 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r113",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r113 (WCAG 2.5.8).",
   "actual_behavior": "Target size is at least 24×24 CSS pixels or has spacing (Minimum). Detected by Siteimprove Alfa rule sia-r113 on 285 of 1667 scanned pages (2638 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/nchs/nsfg/key_statistics/i-keystat.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00050429.htm",
    "https://www.cdc.gov/flu/spotlights/2020-2021/pediatric-flu-deaths.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
     "count": 7
    },
    {
     "pattern": "/nchs/nsfg/key_statistics/i-keystat.htm",
     "count": 1
    },
    {
     "pattern": "/flu/spotlights/{id}-2021/pediatric-flu-deaths.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "LM",
      "group": "Limited manipulation/strength",
      "prevalence": 0.13,
      "percent": "13.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LR",
      "group": "Limited reach",
      "prevalence": 0.02,
      "percent": "2.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Limited manipulation/strength (13.0%), Limited reach (2.0%), Limited vision (2.4%)."
   }
  },
  {
   "finding_id": "VS-f054f4a4",
   "fingerprint": "5fa3b5a6",
   "rule_id": "sia-r53",
   "rule_label": "Headings are structured hierarchically",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r53",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "affects 273 pages; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 273,
    "affected_pages_previous": 242
   },
   "frequency": {
    "instances": 370,
    "pages_affected": 273,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Headings are structured hierarchically (WCAG criterion undetermined)",
   "description": "Headings are structured hierarchically. Detected by Siteimprove Alfa rule sia-r53 on 273 of 1667 scanned pages (370 instances).",
   "remediation_tip": "Use headings in a logical, non-skipping order.",
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r53",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r53.",
   "actual_behavior": "Headings are structured hierarchically. Detected by Siteimprove Alfa rule sia-r53 on 273 of 1667 scanned pages (370 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/nchs/nsfg/key_statistics/i-keystat.htm",
    "https://www.cdc.gov/pcd/issues/2012/11_0127_es.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00050429.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
     "count": 6
    },
    {
     "pattern": "/nchs/nsfg/key_statistics/i-keystat.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/{id}_0127_es.htm",
     "count": 1
    }
   ],
   "associated_technologies": [
    {
     "technology": "D3",
     "lift": 2.6,
     "pages_with_both": 6
    }
   ],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-f7e99f4b",
   "fingerprint": "863d1000",
   "rule_id": "sia-r69",
   "rule_label": "Text has sufficient color contrast (Enhanced)",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "1.4.3",
   "wcag_name": "Contrast (Minimum)",
   "wcag_level": "AA",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 AA",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r69",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "affects 248 pages; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 248,
    "affected_pages_previous": 244
   },
   "frequency": {
    "instances": 1395,
    "pages_affected": 248,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Text has sufficient color contrast (Enhanced) (WCAG 1.4.3)",
   "description": "Text has sufficient color contrast (Enhanced). Detected by Siteimprove Alfa rule sia-r69 on 248 of 1667 scanned pages (1395 instances).",
   "remediation_tip": "Increase text contrast to meet WCAG AA (4.5:1, or 3:1 for large text).",
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r69",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r69 (WCAG 1.4.3).",
   "actual_behavior": "Text has sufficient color contrast (Enhanced). Detected by Siteimprove Alfa rule sia-r69 on 248 of 1667 scanned pages (1395 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/restaurant-food-safety/php/practices/index.html",
    "https://www.cdc.gov/heat-health/es/hcp/toolkits/kit-de-herramientas-para-ninos-con-asma.html",
    "https://www.cdc.gov/physical-activity/features/10-reasons-to-get-moving.html"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/restaurant-food-safety/php/practices/index.html",
     "count": 1
    },
    {
     "pattern": "/heat-health/es/hcp/toolkits/kit-de-herramientas-para-ninos-con-asma.html",
     "count": 1
    },
    {
     "pattern": "/physical-activity/features/{id}-reasons-to-get-moving.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "WPC",
      "group": "Without color perception",
      "prevalence": 0.045,
      "percent": "4.5%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Limited vision (2.4%), Without color perception (4.5%)."
   }
  },
  {
   "finding_id": "VS-3d033717",
   "fingerprint": "1718042b",
   "rule_id": "sia-r70",
   "rule_label": "No obsolete or deprecated elements are used",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r70",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "affects 215 pages; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 215,
    "affected_pages_previous": 190
   },
   "frequency": {
    "instances": 215,
    "pages_affected": 215,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "No obsolete or deprecated elements are used (WCAG criterion undetermined)",
   "description": "No obsolete or deprecated elements are used. Detected by Siteimprove Alfa rule sia-r70 on 215 of 1667 scanned pages (215 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r70",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r70.",
   "actual_behavior": "No obsolete or deprecated elements are used. Detected by Siteimprove Alfa rule sia-r70 on 215 of 1667 scanned pages (215 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00050429.htm",
    "https://www.cdc.gov/pcd/issues/2008/jan/07_0154_fr.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5907a5.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
     "count": 11
    },
    {
     "pattern": "/pcd/issues/{id}/jan/{id}_0154_fr.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5907a5.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-a24eaa8c",
   "fingerprint": "8d462fe1",
   "rule_id": "sia-r2",
   "rule_label": "Image has accessible name",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "1.1.1",
   "wcag_name": "Non-text Content",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r2",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "affects 190 pages; worsening trend",
   "trend": {
    "status": "worsening",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 190,
    "affected_pages_previous": 161
   },
   "frequency": {
    "instances": 1664,
    "pages_affected": 190,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Image has accessible name (WCAG 1.1.1)",
   "description": "Image has accessible name. Detected by Siteimprove Alfa rule sia-r2 on 190 of 1667 scanned pages (1664 instances).",
   "remediation_tip": "Give every <img> an accessible name (alt text), or alt=\"\" if purely decorative.",
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r2",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r2 (WCAG 1.1.1).",
   "actual_behavior": "Image has accessible name. Detected by Siteimprove Alfa rule sia-r2 on 190 of 1667 scanned pages (1664 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00050429.htm",
    "https://www.cdc.gov/pcd/issues/2008/jan/07_0154_fr.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5518a6.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
     "count": 11
    },
    {
     "pattern": "/pcd/issues/{id}/jan/{id}_0154_fr.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5518a6.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-7a0e5645",
   "fingerprint": "15da996e",
   "rule_id": "sia-r4",
   "rule_label": "Document has a valid lang attribute",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "3.1.1",
   "wcag_name": "Language of Page",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r4",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "affects 177 pages; persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 177,
    "affected_pages_previous": 157
   },
   "frequency": {
    "instances": 177,
    "pages_affected": 177,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Document has a valid lang attribute (WCAG 3.1.1)",
   "description": "Document has a valid lang attribute. Detected by Siteimprove Alfa rule sia-r4 on 177 of 1667 scanned pages (177 instances).",
   "remediation_tip": "Add a valid lang attribute to <html>.",
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r4",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r4 (WCAG 3.1.1).",
   "actual_behavior": "Document has a valid lang attribute. Detected by Siteimprove Alfa rule sia-r4 on 177 of 1667 scanned pages (177 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00050429.htm",
    "https://www.cdc.gov/pcd/issues/2008/jan/07_0154_fr.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5518a6.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
     "count": 11
    },
    {
     "pattern": "/pcd/issues/{id}/jan/{id}_0154_fr.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5518a6.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-fa44f293",
   "fingerprint": "a01b2a6c",
   "rule_id": "page-has-heading-one",
   "rule_label": "Page should contain a level-one heading",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Best Practice",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/page-has-heading-one?application=axeAPI",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "Moderate severity on 94 pages",
   "trend": {
    "status": "improving",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 94,
    "affected_pages_previous": 251
   },
   "frequency": {
    "instances": 94,
    "pages_affected": 94,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Page should contain a level-one heading (WCAG criterion undetermined)",
   "description": "Page should contain a level-one heading. Detected by axe-core rule page-has-heading-one on 94 of 1667 scanned pages (94 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/page-has-heading-one?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule page-has-heading-one.",
   "actual_behavior": "Page should contain a level-one heading. Detected by axe-core rule page-has-heading-one on 94 of 1667 scanned pages (94 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/vitalsigns/hepc-treatment/index.html",
    "https://www.cdc.gov/niosh/anthrax/site.html",
    "https://www.cdc.gov/niosh/twh/site.html"
   ],
   "html_fragments": [
    {
     "fingerprint": "35830089",
     "html": "<html lang=\"en-us\" class=\"cdc-2022 theme-blue cdc-page-type-splash cdc-tp5 cdc-2020 mobile-nav\">",
     "selectors": [
      "html"
     ]
    },
    {
     "fingerprint": "3d7ee8d3",
     "html": "<html lang=\"en-us\" class=\"cdc-theme-cdc cdc-page-type--content\">",
     "selectors": [
      "html"
     ]
    },
    {
     "fingerprint": "e187bab4",
     "html": "<html lang=\"en-us\" class=\"cdc-theme-cdc cdc-page-type--home\" style=\"--mobile-header-offset: 0px;\">",
     "selectors": [
      "html"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/vitalsigns/hepc-treatment/index.html",
     "count": 1
    },
    {
     "pattern": "/niosh/anthrax/site.html",
     "count": 1
    },
    {
     "pattern": "/niosh/twh/site.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-7118fead",
   "fingerprint": "0d932ac9",
   "rule_id": "sia-r61",
   "rule_label": "Form field label is visible",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r61",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "Moderate severity on 90 pages",
   "trend": {
    "status": "improving",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 90,
    "affected_pages_previous": 99
   },
   "frequency": {
    "instances": 90,
    "pages_affected": 90,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Form field label is visible (WCAG criterion undetermined)",
   "description": "Form field label is visible. Detected by Siteimprove Alfa rule sia-r61 on 90 of 1667 scanned pages (90 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r61",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r61.",
   "actual_behavior": "Form field label is visible. Detected by Siteimprove Alfa rule sia-r61 on 90 of 1667 scanned pages (90 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/pcd/issues/2012/11_0127_es.htm",
    "https://www.cdc.gov/pcd/issues/2012/11_0260_es.htm",
    "https://www.cdc.gov/niosh/anthrax/site.html"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/pcd/issues/{id}/{id}_0127_es.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/{id}_0260_es.htm",
     "count": 1
    },
    {
     "pattern": "/niosh/anthrax/site.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-d6097011",
   "fingerprint": "b46c5395",
   "rule_id": "sia-r68",
   "rule_label": "Presentational children of an element are not focusable",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "1.3.1",
   "wcag_name": "Info and Relationships",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r68",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 80,
    "affected_pages_previous": 65
   },
   "frequency": {
    "instances": 1062,
    "pages_affected": 80,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Presentational children of an element are not focusable (WCAG 1.3.1)",
   "description": "Presentational children of an element are not focusable. Detected by Siteimprove Alfa rule sia-r68 on 80 of 1667 scanned pages (1062 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r68",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r68 (WCAG 1.3.1).",
   "actual_behavior": "Presentational children of an element are not focusable. Detected by Siteimprove Alfa rule sia-r68 on 80 of 1667 scanned pages (1062 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/ecoli/outbreaks/map-organic-walnuts-04-24.html",
    "https://www.cdc.gov/hymenolepis/hcp/clinical-care/index.html",
    "https://www.cdc.gov/physical-activity/features/10-reasons-to-get-moving.html"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/ecoli/outbreaks/map-organic-walnuts-04-24.html",
     "count": 1
    },
    {
     "pattern": "/hymenolepis/hcp/clinical-care/index.html",
     "count": 1
    },
    {
     "pattern": "/physical-activity/features/{id}-reasons-to-get-moving.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-f7dba940",
   "fingerprint": "477d8088",
   "rule_id": "sia-r14",
   "rule_label": "Accessible name of link or button matches visible label",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "2.5.3",
   "wcag_name": "Label in Name",
   "wcag_level": "A",
   "wcag_version": "2.1",
   "wcag_category": "WCAG 2.1 A",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r14",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 78,
    "affected_pages_previous": 72
   },
   "frequency": {
    "instances": 132,
    "pages_affected": 78,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Accessible name of link or button matches visible label (WCAG 2.5.3)",
   "description": "Accessible name of link or button matches visible label. Detected by Siteimprove Alfa rule sia-r14 on 78 of 1667 scanned pages (132 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r14",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r14 (WCAG 2.5.3).",
   "actual_behavior": "Accessible name of link or button matches visible label. Detected by Siteimprove Alfa rule sia-r14 on 78 of 1667 scanned pages (132 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/ecoli/outbreaks/map-organic-walnuts-04-24.html",
    "https://www.cdc.gov/heat-health/es/hcp/toolkits/kit-de-herramientas-para-ninos-con-asma.html",
    "https://www.cdc.gov/nis/about/index.html"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/ecoli/outbreaks/map-organic-walnuts-04-24.html",
     "count": 1
    },
    {
     "pattern": "/heat-health/es/hcp/toolkits/kit-de-herramientas-para-ninos-con-asma.html",
     "count": 1
    },
    {
     "pattern": "/nis/about/index.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "WS",
      "group": "Without speech",
      "prevalence": 0.005,
      "percent": "0.5%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Without speech (0.5%)."
   }
  },
  {
   "finding_id": "VS-2cd767ca",
   "fingerprint": "3123e4f3",
   "rule_id": "sia-r78",
   "rule_label": "Table header has scope",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r78",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "worsening trend",
   "trend": {
    "status": "worsening",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 68,
    "affected_pages_previous": 48
   },
   "frequency": {
    "instances": 84,
    "pages_affected": 68,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Table header has scope (WCAG criterion undetermined)",
   "description": "Table header has scope. Detected by Siteimprove Alfa rule sia-r78 on 68 of 1667 scanned pages (84 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r78",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r78.",
   "actual_behavior": "Table header has scope. Detected by Siteimprove Alfa rule sia-r78 on 68 of 1667 scanned pages (84 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/pcd/issues/2012/11_0127_es.htm",
    "https://www.cdc.gov/pcd/issues/2012/11_0260_es.htm",
    "https://www.cdc.gov/flu/spotlights/2020-2021/pediatric-flu-deaths.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/pcd/issues/{id}/{id}_0127_es.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/{id}_0260_es.htm",
     "count": 1
    },
    {
     "pattern": "/flu/spotlights/{id}-2021/pediatric-flu-deaths.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-28ebd979",
   "fingerprint": "032345cc",
   "rule_id": "sia-r11",
   "rule_label": "Link has accessible name",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "2.4.4",
   "wcag_name": "Link Purpose (In Context)",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r11",
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 64,
    "affected_pages_previous": 69
   },
   "frequency": {
    "instances": 127,
    "pages_affected": 64,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Link has accessible name (WCAG 2.4.4)",
   "description": "Link has accessible name. Detected by Siteimprove Alfa rule sia-r11 on 64 of 1667 scanned pages (127 instances).",
   "remediation_tip": "Give the link an accessible name via text content or aria-label.",
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r11",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r11 (WCAG 2.4.4).",
   "actual_behavior": "Link has accessible name. Detected by Siteimprove Alfa rule sia-r11 on 64 of 1667 scanned pages (127 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/pcd/issues/2012/11_0127_es.htm",
    "https://www.cdc.gov/pcd/issues/2012/11_0260_es.htm",
    "https://www.cdc.gov/pcd/issues/2008/jan/07_0154_fr.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/pcd/issues/{id}/{id}_0127_es.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/{id}_0260_es.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/jan/{id}_0154_fr.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-04a9d28c",
   "fingerprint": "02cfba82",
   "rule_id": "presentational-attr",
   "rule_label": "Presentational attribute (use CSS)",
   "engine": "deprecated-html",
   "tool": "deprecated-html",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": null,
   "severity": "Moderate",
   "priority": "p2",
   "confidence": "high",
   "rationale": "Moderate severity on 54 pages",
   "trend": {
    "status": "improving",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 54,
    "affected_pages_previous": 80
   },
   "frequency": {
    "instances": 4365,
    "pages_affected": 54,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Presentational attribute (use CSS) (WCAG criterion undetermined)",
   "description": "Presentational attribute (use CSS). Detected by deprecated-html rule presentational-attr on 54 of 1667 scanned pages (4365 instances).",
   "remediation_tip": null,
   "suggested_fix": "Not captured by automated scan — requires manual testing.",
   "expected_behavior": "Element passes deprecated-html rule presentational-attr.",
   "actual_behavior": "Presentational attribute (use CSS). Detected by deprecated-html rule presentational-attr on 54 of 1667 scanned pages (4365 instances).",
   "testing_environment": "Automated: deprecated-html, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5715a5.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00018165.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00025174.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "c9996810",
     "html": "<body bgcolor=\"#ffffff\" leftmargin=\"0\" topmargin=\"0\" marginheight=\"0\" marginwidth=\"0\" class=\" dmat-load-complete\">\n<!-- report header -->\n<!--webbot bot=\"Include\" U-Include=\"../../headers_footers/repo",
     "selectors": [
      "body"
     ]
    },
    {
     "fingerprint": "58a761f4",
     "html": "<table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody><tr>\n\t<td colspan=\"7\" bgcolor=\"#000099\">\n\t<img src=\"../../images/nav01.gif\" border=\"0\" width=\"5\" height=\"2\" alt=\"Skip Navigation ",
     "selectors": [
      "table"
     ]
    },
    {
     "fingerprint": "f6d1b851",
     "html": "<td colspan=\"7\" bgcolor=\"#000099\">\n\t<img src=\"../../images/nav01.gif\" border=\"0\" width=\"5\" height=\"2\" alt=\"Skip Navigation Links\"><a href=\"#content_area\"><img src=\"../../images/nav01.gif\" border=\"0\" w",
     "selectors": [
      "td"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
     "count": 10
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5715a5.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5930a3.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-91d2294a",
   "fingerprint": "648c7ef8",
   "rule_id": "font-element",
   "rule_label": "Obsolete <font> element (use CSS)",
   "engine": "deprecated-html",
   "tool": "deprecated-html",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": null,
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "high",
   "rationale": "Moderate severity on 36 pages",
   "trend": {
    "status": "improving",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 36,
    "affected_pages_previous": 57
   },
   "frequency": {
    "instances": 254,
    "pages_affected": 36,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Obsolete <font> element (use CSS) (WCAG criterion undetermined)",
   "description": "Obsolete <font> element (use CSS). Detected by deprecated-html rule font-element on 36 of 1667 scanned pages (254 instances).",
   "remediation_tip": null,
   "suggested_fix": "Not captured by automated scan — requires manual testing.",
   "expected_behavior": "Element passes deprecated-html rule font-element.",
   "actual_behavior": "Obsolete <font> element (use CSS). Detected by deprecated-html rule font-element on 36 of 1667 scanned pages (254 instances).",
   "testing_environment": "Automated: deprecated-html, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5715a5.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00018165.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00025174.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "cae7b077",
     "html": "<font size=\"3\" face=\"Arial, Helvetica, Verdana\" color=\"#FFFFFF\"><i><b>Weekly</b></i></font>",
     "selectors": [
      "font"
     ]
    },
    {
     "fingerprint": "1f44d3b9",
     "html": "<font size=\"2\" face=\"Arial, Helvetica, Verdana\" color=\"#333333\"><b>April 18, 2008 / 57(15);409</b></font>",
     "selectors": [
      "font"
     ]
    },
    {
     "fingerprint": "536a72f2",
     "html": "<font face=\"Arial, Helvetica, Verdana\" size=\"5\"><a name=\"content_area\"><b></b></a></font>",
     "selectors": [
      "font"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
     "count": 13
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5715a5.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5930a3.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-a48e6078",
   "fingerprint": "2ccef0fa",
   "rule_id": "sia-r8",
   "rule_label": "Form field has accessible name",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "4.1.2",
   "wcag_name": "Name, Role, Value",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r8",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "high",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 31,
    "affected_pages_previous": 34
   },
   "frequency": {
    "instances": 33,
    "pages_affected": 31,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Form field has accessible name (WCAG 4.1.2)",
   "description": "Form field has accessible name. Detected by Siteimprove Alfa rule sia-r8 on 31 of 1667 scanned pages (33 instances).",
   "remediation_tip": "Associate the form field with a label.",
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r8",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r8 (WCAG 4.1.2).",
   "actual_behavior": "Form field has accessible name. Detected by Siteimprove Alfa rule sia-r8 on 31 of 1667 scanned pages (33 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5907a5.htm",
    "https://www.cdc.gov/mmwr/index2006.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6018a3.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5907a5.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/index2006.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm6018a3.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LM",
      "group": "Limited manipulation/strength",
      "prevalence": 0.13,
      "percent": "13.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%)."
   }
  },
  {
   "finding_id": "VS-7845739d",
   "fingerprint": "4df079ac",
   "rule_id": "big-element",
   "rule_label": "Obsolete <big> element (use CSS)",
   "engine": "deprecated-html",
   "tool": "deprecated-html",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": null,
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "high",
   "rationale": "Moderate severity on 25 pages",
   "trend": {
    "status": "improving",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 25,
    "affected_pages_previous": 41
   },
   "frequency": {
    "instances": 28,
    "pages_affected": 25,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Obsolete <big> element (use CSS) (WCAG criterion undetermined)",
   "description": "Obsolete <big> element (use CSS). Detected by deprecated-html rule big-element on 25 of 1667 scanned pages (28 instances).",
   "remediation_tip": null,
   "suggested_fix": "Not captured by automated scan — requires manual testing.",
   "expected_behavior": "Element passes deprecated-html rule big-element.",
   "actual_behavior": "Obsolete <big> element (use CSS). Detected by deprecated-html rule big-element on 25 of 1667 scanned pages (28 instances).",
   "testing_environment": "Automated: deprecated-html, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5715a5.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00018165.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00025174.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "6608d3b8",
     "html": "<big><strong>Disclaimer</strong></big>",
     "selectors": [
      "big"
     ]
    },
    {
     "fingerprint": "b515b2e7",
     "html": "<big><strong>Note:</strong></big>",
     "selectors": [
      "big"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
     "count": 17
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5715a5.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5711a6.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-4edfe386",
   "fingerprint": "a3d8ec5a",
   "rule_id": "skip-link",
   "rule_label": "The skip-link target should exist and be focusable",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Best Practice",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/skip-link?application=axeAPI",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "high",
   "rationale": "Moderate severity on 19 pages",
   "trend": {
    "status": "improving",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 19,
    "affected_pages_previous": 172
   },
   "frequency": {
    "instances": 19,
    "pages_affected": 19,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "The skip-link target should exist and be focusable (WCAG criterion undetermined)",
   "description": "The skip-link target should exist and be focusable. Detected by axe-core rule skip-link on 19 of 1667 scanned pages (19 instances).",
   "remediation_tip": "Ensure the skip link targets a real, focusable element (its href must match an existing id).",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/skip-link?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule skip-link.",
   "actual_behavior": "The skip-link target should exist and be focusable. Detected by axe-core rule skip-link on 19 of 1667 scanned pages (19 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/pcd/issues/2012/11_0127_es.htm",
    "https://www.cdc.gov/pcd/issues/2012/11_0260_es.htm",
    "https://www.cdc.gov/pcd/issues/2012/11_0117_es.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "e229b85a",
     "html": "<a href=\"#az\" class=\"skippy\" title=\"Salte directo al listado de A-Z\">Salte directo al listado de A-Z</a>",
     "selectors": [
      "a[href$=\"#az\"]"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/pcd/issues/{id}/{id}_0127_es.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/{id}_0260_es.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/{id}_0117_es.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-3fb891c5",
   "fingerprint": "aaf9f07a",
   "rule_id": "sia-r60",
   "rule_label": "Input purpose can be determined",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r60",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "high",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 16,
    "affected_pages_previous": 10
   },
   "frequency": {
    "instances": 16,
    "pages_affected": 16,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Input purpose can be determined (WCAG criterion undetermined)",
   "description": "Input purpose can be determined. Detected by Siteimprove Alfa rule sia-r60 on 16 of 1667 scanned pages (16 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r60",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r60.",
   "actual_behavior": "Input purpose can be determined. Detected by Siteimprove Alfa rule sia-r60 on 16 of 1667 scanned pages (16 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/pcd/issues/2012/11_0127_es.htm",
    "https://www.cdc.gov/pcd/issues/2012/11_0260_es.htm",
    "https://www.cdc.gov/pcd/issues/2012/11_0117_es.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/pcd/issues/{id}/{id}_0127_es.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/{id}_0260_es.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/{id}_0117_es.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-0ba8ce9d",
   "fingerprint": "1b1ae391",
   "rule_id": "scope-attr-valid",
   "rule_label": "scope attribute should be used correctly",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Best Practice",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/scope-attr-valid?application=axeAPI",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "high",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 15,
    "affected_pages_previous": 12
   },
   "frequency": {
    "instances": 260,
    "pages_affected": 15,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "scope attribute should be used correctly (WCAG criterion undetermined)",
   "description": "scope attribute should be used correctly. Detected by axe-core rule scope-attr-valid on 15 of 1667 scanned pages (260 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/scope-attr-valid?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule scope-attr-valid.",
   "actual_behavior": "scope attribute should be used correctly. Detected by axe-core rule scope-attr-valid on 15 of 1667 scanned pages (260 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/nchs/nsfg/key_statistics/i-keystat.htm",
    "https://www.cdc.gov/hepatitis/php/surveillance-guidance/general-surveillance.html",
    "https://www.cdc.gov/flu/hcp/vaccine-supply/2022-2023.html"
   ],
   "html_fragments": [
    {
     "fingerprint": "b594c068",
     "html": "<td scope=\"col\"><strong>Percentage and number of women 15-49 years of age (of all marital statuses) who have impaired fecundity (i.e., who are not surgically sterile, and for whom it is difficult or i",
     "selectors": [
      "td:nth-child(1)"
     ]
    },
    {
     "fingerprint": "93e5a756",
     "html": "<td scope=\"col\">13.4 (0.41), 9.7 million</td>",
     "selectors": [
      ".valign-middle > td:nth-child(2)"
     ]
    },
    {
     "fingerprint": "f8b63b14",
     "html": "<td scope=\"col\"><span class=\"d-block text center\">16.3 (0.73), 4.7 million</span></td>",
     "selectors": [
      ".table-responsive:nth-child(12) > table > tbody > tr > td"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/nchs/nsfg/key_statistics/i-keystat.htm",
     "count": 1
    },
    {
     "pattern": "/hepatitis/php/surveillance-guidance/general-surveillance.html",
     "count": 1
    },
    {
     "pattern": "/flu/hcp/vaccine-supply/{id}-2023.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-20060f39",
   "fingerprint": "488b5ac8",
   "rule_id": "center-element",
   "rule_label": "Obsolete <center> element (use CSS)",
   "engine": "deprecated-html",
   "tool": "deprecated-html",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": null,
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "high",
   "rationale": "Moderate severity on 10 pages",
   "trend": {
    "status": "improving",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 10,
    "affected_pages_previous": 15
   },
   "frequency": {
    "instances": 20,
    "pages_affected": 10,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Obsolete <center> element (use CSS) (WCAG criterion undetermined)",
   "description": "Obsolete <center> element (use CSS). Detected by deprecated-html rule center-element on 10 of 1667 scanned pages (20 instances).",
   "remediation_tip": null,
   "suggested_fix": "Not captured by automated scan — requires manual testing.",
   "expected_behavior": "Element passes deprecated-html rule center-element.",
   "actual_behavior": "Obsolete <center> element (use CSS). Detected by deprecated-html rule center-element on 10 of 1667 scanned pages (20 instances).",
   "testing_environment": "Automated: deprecated-html, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/pcd/issues/2011/nov/11_0091a.htm",
    "https://www.cdc.gov/pcd/issues/2011/nov/11_0028_es.htm",
    "https://www.cdc.gov/pcd/issues/2008/oct/07_0167_zht.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "7b2b52fe",
     "html": "<center>\n  <table border=\"0\" width=\"140\" cellspacing=\"0\" cellpadding=\"0\">\n    \n    <tbody><tr>\n      <td width=\"140\" bgcolor=\"#8A9683\"><img border=\"0\" src=\"www.cdc.gov/navimages/spacer.gif\" width=\"140",
     "selectors": [
      "center"
     ]
    },
    {
     "fingerprint": "5a6e6a0f",
     "html": "<center>\n<table border=\"0\" width=\"136\" cellspacing=\"0\" cellpadding=\"4\">\n  <tbody><tr>\n    <td width=\"136\" valign=\"top\" align=\"center\"><img border=\"0\" src=\"www.cdc.gov/navimages/spacer.gif\" width=\"10\" ",
     "selectors": [
      "center"
     ]
    },
    {
     "fingerprint": "b80b34f6",
     "html": "<center>\n  <table border=\"0\" width=\"140\" cellspacing=\"0\" cellpadding=\"0\">\n \n    <tbody><tr>\n      <td width=\"140\" bgcolor=\"#8A9683\"><img border=\"0\" src=\"www.cdc.gov/navimages/spacer.gif\" width=\"140\" h",
     "selectors": [
      "center"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/pcd/issues/{id}/nov/{id}_0091a.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/nov/{id}_0028_es.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/oct/{id}_0167_zht.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-f2542d87",
   "fingerprint": "9cf75a1e",
   "rule_id": "sia-r79",
   "rule_label": "Duplicate role landmark is labeled",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r79",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "medium",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 9,
    "affected_pages_previous": 15
   },
   "frequency": {
    "instances": 19,
    "pages_affected": 9,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Duplicate role landmark is labeled (WCAG criterion undetermined)",
   "description": "Duplicate role landmark is labeled. Detected by Siteimprove Alfa rule sia-r79 on 9 of 1667 scanned pages (19 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r79",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r79.",
   "actual_behavior": "Duplicate role landmark is labeled. Detected by Siteimprove Alfa rule sia-r79 on 9 of 1667 scanned pages (19 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00032737.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00022160.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/00035643.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
     "count": 9
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-3d3b2245",
   "fingerprint": "69d9719a",
   "rule_id": "sia-r40",
   "rule_label": "Tables are used for tabular data, not layout",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r40",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "medium",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 8,
    "affected_pages_previous": 5
   },
   "frequency": {
    "instances": 8,
    "pages_affected": 8,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Tables are used for tabular data, not layout (WCAG criterion undetermined)",
   "description": "Tables are used for tabular data, not layout. Detected by Siteimprove Alfa rule sia-r40 on 8 of 1667 scanned pages (8 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r40",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r40.",
   "actual_behavior": "Tables are used for tabular data, not layout. Detected by Siteimprove Alfa rule sia-r40 on 8 of 1667 scanned pages (8 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/ecoli/outbreaks/map-organic-walnuts-04-24.html",
    "https://www.cdc.gov/sti/php/projects/ssun.html",
    "http://www.cdc.gov/cogh/ihregulations.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/ecoli/outbreaks/map-organic-walnuts-04-24.html",
     "count": 1
    },
    {
     "pattern": "/sti/php/projects/ssun.html",
     "count": 1
    },
    {
     "pattern": "/cogh/ihregulations.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-4408605e",
   "fingerprint": "265d5c76",
   "rule_id": "sia-r46",
   "rule_label": "Element has required aria-owns",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "1.3.1",
   "wcag_name": "Info and Relationships",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r46",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "medium",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W25",
    "last_observed": "2026-W27",
    "weeks_observed": 3,
    "affected_pages_current": 6,
    "affected_pages_previous": 8
   },
   "frequency": {
    "instances": 44,
    "pages_affected": 6,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Element has required aria-owns (WCAG 1.3.1)",
   "description": "Element has required aria-owns. Detected by Siteimprove Alfa rule sia-r46 on 6 of 1667 scanned pages (44 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r46",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r46 (WCAG 1.3.1).",
   "actual_behavior": "Element has required aria-owns. Detected by Siteimprove Alfa rule sia-r46 on 6 of 1667 scanned pages (44 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/nchs/nsfg/key_statistics/i-keystat.htm",
    "https://www.cdc.gov/phlp/php/publications/pneumococcal-vaccination-laws-ambulatory-facilities.html",
    "https://www.cdc.gov/hepatitis/php/surveillance-guidance/general-surveillance.html"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/nchs/nsfg/key_statistics/i-keystat.htm",
     "count": 1
    },
    {
     "pattern": "/phlp/php/publications/pneumococcal-vaccination-laws-ambulatory-facilities.html",
     "count": 1
    },
    {
     "pattern": "/hepatitis/php/surveillance-guidance/general-surveillance.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-9207ed51",
   "fingerprint": "6cdd8dba",
   "rule_id": "sia-r45",
   "rule_label": "aria-hidden element is not exposed to assistive technology",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "1.3.1",
   "wcag_name": "Info and Relationships",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r45",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "medium",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W25",
    "last_observed": "2026-W27",
    "weeks_observed": 3,
    "affected_pages_current": 4,
    "affected_pages_previous": 4
   },
   "frequency": {
    "instances": 36,
    "pages_affected": 4,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "aria-hidden element is not exposed to assistive technology (WCAG 1.3.1)",
   "description": "aria-hidden element is not exposed to assistive technology. Detected by Siteimprove Alfa rule sia-r45 on 4 of 1667 scanned pages (36 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r45",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r45 (WCAG 1.3.1).",
   "actual_behavior": "aria-hidden element is not exposed to assistive technology. Detected by Siteimprove Alfa rule sia-r45 on 4 of 1667 scanned pages (36 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/ncird/surveillance/respiratory-illnesses/index.html",
    "https://www.cdc.gov/brfss/acbs/2024/prevalence_tables/table3_LLCP.html",
    "https://www.cdc.gov/childvaxview/publications-resources/nis-child-2016-2018.html"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/ncird/surveillance/respiratory-illnesses/index.html",
     "count": 1
    },
    {
     "pattern": "/brfss/acbs/{id}/prevalence_tables/table3_LLCP.html",
     "count": 1
    },
    {
     "pattern": "/childvaxview/publications-resources/nis-child-2016-2018.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-3c632d31",
   "fingerprint": "7d010b8c",
   "rule_id": "sia-r64",
   "rule_label": "Element has required owned roles",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "1.3.1",
   "wcag_name": "Info and Relationships",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r64",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "medium",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 4,
    "affected_pages_previous": 13
   },
   "frequency": {
    "instances": 4,
    "pages_affected": 4,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Element has required owned roles (WCAG 1.3.1)",
   "description": "Element has required owned roles. Detected by Siteimprove Alfa rule sia-r64 on 4 of 1667 scanned pages (4 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r64",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r64 (WCAG 1.3.1).",
   "actual_behavior": "Element has required owned roles. Detected by Siteimprove Alfa rule sia-r64 on 4 of 1667 scanned pages (4 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5115a2.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5113a5.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5135a3.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5115a2.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5113a5.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5135a3.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-3f067795",
   "fingerprint": "f9bf7824",
   "rule_id": "sia-r77",
   "rule_label": "Table cell has header",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "1.3.1",
   "wcag_name": "Info and Relationships",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r77",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "medium",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 3,
    "affected_pages_previous": 8
   },
   "frequency": {
    "instances": 35,
    "pages_affected": 3,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Table cell has header (WCAG 1.3.1)",
   "description": "Table cell has header. Detected by Siteimprove Alfa rule sia-r77 on 3 of 1667 scanned pages (35 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r77",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r77 (WCAG 1.3.1).",
   "actual_behavior": "Table cell has header. Detected by Siteimprove Alfa rule sia-r77 on 3 of 1667 scanned pages (35 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/nchs/nsfg/key_statistics/i-keystat.htm",
    "https://www.cdc.gov/hepatitis/php/surveillance-guidance/general-surveillance.html",
    "https://www.cdc.gov/nchs/deaths.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/nchs/nsfg/key_statistics/i-keystat.htm",
     "count": 1
    },
    {
     "pattern": "/hepatitis/php/surveillance-guidance/general-surveillance.html",
     "count": 1
    },
    {
     "pattern": "/nchs/deaths.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-29f9f921",
   "fingerprint": "65a386fc",
   "rule_id": "sia-r12",
   "rule_label": "Button has accessible name",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "4.1.2",
   "wcag_name": "Name, Role, Value",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r12",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "medium",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W25",
    "last_observed": "2026-W27",
    "weeks_observed": 3,
    "affected_pages_current": 3,
    "affected_pages_previous": 2
   },
   "frequency": {
    "instances": 25,
    "pages_affected": 3,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Button has accessible name (WCAG 4.1.2)",
   "description": "Button has accessible name. Detected by Siteimprove Alfa rule sia-r12 on 3 of 1667 scanned pages (25 instances).",
   "remediation_tip": "Give the button an accessible name via text, aria-label, or aria-labelledby.",
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r12",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r12 (WCAG 4.1.2).",
   "actual_behavior": "Button has accessible name. Detected by Siteimprove Alfa rule sia-r12 on 3 of 1667 scanned pages (25 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/hepatitis/php/npr-2023/hep-c-reduce-infections.html",
    "https://www.cdc.gov/hepatitis/php/npr-2025/hep-b-reduce-deaths.html",
    "https://www.cdc.gov/vitalsigns/topics.html"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/hepatitis/php/npr-2023/hep-c-reduce-infections.html",
     "count": 1
    },
    {
     "pattern": "/hepatitis/php/npr-2025/hep-b-reduce-deaths.html",
     "count": 1
    },
    {
     "pattern": "/vitalsigns/topics.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LM",
      "group": "Limited manipulation/strength",
      "prevalence": 0.13,
      "percent": "13.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%)."
   }
  },
  {
   "finding_id": "VS-e43903a1",
   "fingerprint": "49842005",
   "rule_id": "sia-r75",
   "rule_label": "Form field error is identified and described",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r75",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "medium",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W25",
    "last_observed": "2026-W27",
    "weeks_observed": 3,
    "affected_pages_current": 3,
    "affected_pages_previous": 1
   },
   "frequency": {
    "instances": 20,
    "pages_affected": 3,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Form field error is identified and described (WCAG criterion undetermined)",
   "description": "Form field error is identified and described. Detected by Siteimprove Alfa rule sia-r75 on 3 of 1667 scanned pages (20 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r75",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r75.",
   "actual_behavior": "Form field error is identified and described. Detected by Siteimprove Alfa rule sia-r75 on 3 of 1667 scanned pages (20 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5916a3.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5914a3.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a5.htm?s_cid=mm5924a5_w"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5916a3.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5914a3.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5924a5.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-a2a3dffb",
   "fingerprint": "54883093",
   "rule_id": "sia-r90",
   "rule_label": "Component with same name serves same purpose",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "4.1.2",
   "wcag_name": "Name, Role, Value",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r90",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "low",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 2,
    "affected_pages_previous": 2
   },
   "frequency": {
    "instances": 8,
    "pages_affected": 2,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Component with same name serves same purpose (WCAG 4.1.2)",
   "description": "Component with same name serves same purpose. Detected by Siteimprove Alfa rule sia-r90 on 2 of 1667 scanned pages (8 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r90",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r90 (WCAG 4.1.2).",
   "actual_behavior": "Component with same name serves same purpose. Detected by Siteimprove Alfa rule sia-r90 on 2 of 1667 scanned pages (8 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/nhsn/training/continuing-edu/cbts.html",
    "https://www.cdc.gov/alcohol/ardi/methods.html"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/nhsn/training/continuing-edu/cbts.html",
     "count": 1
    },
    {
     "pattern": "/alcohol/ardi/methods.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LM",
      "group": "Limited manipulation/strength",
      "prevalence": 0.13,
      "percent": "13.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%)."
   }
  },
  {
   "finding_id": "VS-388b5438",
   "fingerprint": "e21585c3",
   "rule_id": "sia-r80",
   "rule_label": "Scrollable element is keyboard accessible",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "1.4.8",
   "wcag_name": "Visual Presentation",
   "wcag_level": "AAA",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.x AAA",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r80",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "low",
   "rationale": "Moderate severity on 2 pages",
   "trend": {
    "status": "improving",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 2,
    "affected_pages_previous": 41
   },
   "frequency": {
    "instances": 19,
    "pages_affected": 2,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Scrollable element is keyboard accessible (WCAG 1.4.8)",
   "description": "Scrollable element is keyboard accessible. Detected by Siteimprove Alfa rule sia-r80 on 2 of 1667 scanned pages (19 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r80",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r80 (WCAG 1.4.8).",
   "actual_behavior": "Scrollable element is keyboard accessible. Detected by Siteimprove Alfa rule sia-r80 on 2 of 1667 scanned pages (19 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/pcd/issues/2008/jan/toc.htm",
    "http://www.cdc.gov/pcd/current_issue.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/pcd/issues/{id}/jan/toc.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/current_issue.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-7fbb8b20",
   "fingerprint": "79bb1ee9",
   "rule_id": "sia-r59",
   "rule_label": "Element with orientation is not locked",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r59",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "low",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W25",
    "last_observed": "2026-W27",
    "weeks_observed": 3,
    "affected_pages_current": 2,
    "affected_pages_previous": 5
   },
   "frequency": {
    "instances": 2,
    "pages_affected": 2,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Element with orientation is not locked (WCAG criterion undetermined)",
   "description": "Element with orientation is not locked. Detected by Siteimprove Alfa rule sia-r59 on 2 of 1667 scanned pages (2 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r59",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r59.",
   "actual_behavior": "Element with orientation is not locked. Detected by Siteimprove Alfa rule sia-r59 on 2 of 1667 scanned pages (2 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/volumes/65/wr/mm6549md.htm?s_cid=mm6549md_w",
    "https://www.cdc.gov/mmwr/volumes/65/wr/mm6525md.htm?s_cid=mm6525md_w"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/mmwr/volumes/{id}/wr/mm6549md.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/volumes/{id}/wr/mm6525md.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-c461a167",
   "fingerprint": "bc4d5e5b",
   "rule_id": "sia-r54",
   "rule_label": "Assertive live region is marked as atomic",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r54",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "low",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W25",
    "last_observed": "2026-W27",
    "weeks_observed": 3,
    "affected_pages_current": 2,
    "affected_pages_previous": 1
   },
   "frequency": {
    "instances": 2,
    "pages_affected": 2,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Assertive live region is marked as atomic (WCAG criterion undetermined)",
   "description": "Assertive live region is marked as atomic. Detected by Siteimprove Alfa rule sia-r54 on 2 of 1667 scanned pages (2 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r54",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r54.",
   "actual_behavior": "Assertive live region is marked as atomic. Detected by Siteimprove Alfa rule sia-r54 on 2 of 1667 scanned pages (2 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/hepatitis/php/npr-2023/hep-c-reduce-infections.html",
    "https://www.cdc.gov/hepatitis/php/npr-2025/hep-b-reduce-deaths.html"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/hepatitis/php/npr-2023/hep-c-reduce-infections.html",
     "count": 1
    },
    {
     "pattern": "/hepatitis/php/npr-2025/hep-b-reduce-deaths.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-33b49e3b",
   "fingerprint": "04ce6362",
   "rule_id": "sia-r76",
   "rule_label": "Info and Relationships",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "1.3.1",
   "wcag_name": "Info and Relationships",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r76",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "low",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W26",
    "last_observed": "2026-W27",
    "weeks_observed": 2,
    "affected_pages_current": 1,
    "affected_pages_previous": 1
   },
   "frequency": {
    "instances": 1,
    "pages_affected": 1,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Info and Relationships (WCAG 1.3.1)",
   "description": "Info and Relationships. Detected by Siteimprove Alfa rule sia-r76 on 1 of 1667 scanned pages (1 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r76",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r76 (WCAG 1.3.1).",
   "actual_behavior": "Info and Relationships. Detected by Siteimprove Alfa rule sia-r76 on 1 of 1667 scanned pages (1 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/ncird/surveillance/respiratory-illnesses/index.html"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/ncird/surveillance/respiratory-illnesses/index.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-efd91fdd",
   "fingerprint": "12434796",
   "rule_id": "sia-r62",
   "rule_label": "Link in text block is visually distinguishable without color",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "1.4.1",
   "wcag_name": "Use of Color",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r62",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "low",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 1,
    "affected_pages_previous": 1
   },
   "frequency": {
    "instances": 1,
    "pages_affected": 1,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Link in text block is visually distinguishable without color (WCAG 1.4.1)",
   "description": "Link in text block is visually distinguishable without color. Detected by Siteimprove Alfa rule sia-r62 on 1 of 1667 scanned pages (1 instances).",
   "remediation_tip": "Make links visually distinguishable from surrounding text (not by color alone).",
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r62",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r62 (WCAG 1.4.1).",
   "actual_behavior": "Link in text block is visually distinguishable without color. Detected by Siteimprove Alfa rule sia-r62 on 1 of 1667 scanned pages (1 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/nchs/deaths.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/nchs/deaths.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WPC",
      "group": "Without color perception",
      "prevalence": 0.045,
      "percent": "4.5%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without color perception (4.5%), Limited vision (2.4%)."
   }
  },
  {
   "finding_id": "VS-0728f339",
   "fingerprint": "9bd7209b",
   "rule_id": "sia-r1",
   "rule_label": "Document has a title element",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": "2.4.2",
   "wcag_name": "Page Titled",
   "wcag_level": "A",
   "wcag_version": "2.0",
   "wcag_category": "WCAG 2.0 A",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r1",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "low",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W25",
    "last_observed": "2026-W27",
    "weeks_observed": 2,
    "affected_pages_current": 1,
    "affected_pages_previous": null
   },
   "frequency": {
    "instances": 1,
    "pages_affected": 1,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Document has a title element (WCAG 2.4.2)",
   "description": "Document has a title element. Detected by Siteimprove Alfa rule sia-r1 on 1 of 1667 scanned pages (1 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r1",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r1 (WCAG 2.4.2).",
   "actual_behavior": "Document has a title element. Detected by Siteimprove Alfa rule sia-r1 on 1 of 1667 scanned pages (1 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5906a6.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5906a6.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [
     {
      "code": "WV",
      "group": "Without vision",
      "prevalence": 0.01,
      "percent": "1.0%",
      "estimatedExcluded": null
     },
     {
      "code": "LV",
      "group": "Limited vision",
      "prevalence": 0.024,
      "percent": "2.4%",
      "estimatedExcluded": null
     },
     {
      "code": "LCLA",
      "group": "Limited cognitive, language, or learning ability",
      "prevalence": 0.11,
      "percent": "11.0%",
      "estimatedExcluded": null
     }
    ],
    "summary": "Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%)."
   }
  },
  {
   "finding_id": "VS-30db094d",
   "fingerprint": "c8a85210",
   "rule_id": "landmark-banner-is-top-level",
   "rule_label": "Banner landmark should not be contained in another landmark",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Best Practice",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/landmark-banner-is-top-level?application=axeAPI",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "low",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W27",
    "last_observed": "2026-W27",
    "weeks_observed": 1,
    "affected_pages_current": 1,
    "affected_pages_previous": null
   },
   "frequency": {
    "instances": 1,
    "pages_affected": 1,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Banner landmark should not be contained in another landmark (WCAG criterion undetermined)",
   "description": "Banner landmark should not be contained in another landmark. Detected by axe-core rule landmark-banner-is-top-level on 1 of 1667 scanned pages (1 instances).",
   "remediation_tip": "Put the banner landmark (<header>) at the top level, not nested inside another landmark.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/landmark-banner-is-top-level?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule landmark-banner-is-top-level.",
   "actual_behavior": "Banner landmark should not be contained in another landmark. Detected by axe-core rule landmark-banner-is-top-level on 1 of 1667 scanned pages (1 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/niosh/newsroom/feature/needlestick_disposal.html"
   ],
   "html_fragments": [
    {
     "fingerprint": "55c6445a",
     "html": "<div class=\"alert bg-amber-tertiary relative false\" role=\"banner\">",
     "selectors": [
      ".alert"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/niosh/newsroom/feature/needlestick_disposal.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-054101da",
   "fingerprint": "4e882266",
   "rule_id": "landmark-no-duplicate-banner",
   "rule_label": "Document should not have more than one banner landmark",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Best Practice",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/landmark-no-duplicate-banner?application=axeAPI",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "low",
   "rationale": "Moderate severity on 1 pages",
   "trend": {
    "status": "improving",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 2,
    "affected_pages_current": 1,
    "affected_pages_previous": 158
   },
   "frequency": {
    "instances": 1,
    "pages_affected": 1,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Document should not have more than one banner landmark (WCAG criterion undetermined)",
   "description": "Document should not have more than one banner landmark. Detected by axe-core rule landmark-no-duplicate-banner on 1 of 1667 scanned pages (1 instances).",
   "remediation_tip": "Use only one banner landmark (<header> at the top level) per page.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/landmark-no-duplicate-banner?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule landmark-no-duplicate-banner.",
   "actual_behavior": "Document should not have more than one banner landmark. Detected by axe-core rule landmark-no-duplicate-banner on 1 of 1667 scanned pages (1 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/niosh/newsroom/feature/needlestick_disposal.html"
   ],
   "html_fragments": [
    {
     "fingerprint": "62482827",
     "html": "<header id=\"top\" class=\"app-header\" role=\"banner\">",
     "selectors": [
      "#top"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/niosh/newsroom/feature/needlestick_disposal.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-aa242c2d",
   "fingerprint": "9bf7674d",
   "rule_id": "sia-r87",
   "rule_label": "First focusable element is link to main content",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r87",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "low",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W25",
    "last_observed": "2026-W27",
    "weeks_observed": 3,
    "affected_pages_current": 1,
    "affected_pages_previous": 5
   },
   "frequency": {
    "instances": 1,
    "pages_affected": 1,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "First focusable element is link to main content (WCAG criterion undetermined)",
   "description": "First focusable element is link to main content. Detected by Siteimprove Alfa rule sia-r87 on 1 of 1667 scanned pages (1 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r87",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r87.",
   "actual_behavior": "First focusable element is link to main content. Detected by Siteimprove Alfa rule sia-r87 on 1 of 1667 scanned pages (1 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/niosh/newsroom/feature/needlestick_disposal.html"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/niosh/newsroom/feature/needlestick_disposal.html",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-e5ec42f0",
   "fingerprint": "5e16fc6a",
   "rule_id": "sia-r72",
   "rule_label": "Element role is consistent with ARIA landmark",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r72",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "low",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W26",
    "last_observed": "2026-W27",
    "weeks_observed": 2,
    "affected_pages_current": 1,
    "affected_pages_previous": null
   },
   "frequency": {
    "instances": 1,
    "pages_affected": 1,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Element role is consistent with ARIA landmark (WCAG criterion undetermined)",
   "description": "Element role is consistent with ARIA landmark. Detected by Siteimprove Alfa rule sia-r72 on 1 of 1667 scanned pages (1 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r72",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r72.",
   "actual_behavior": "Element role is consistent with ARIA landmark. Detected by Siteimprove Alfa rule sia-r72 on 1 of 1667 scanned pages (1 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/nchs/covid19/pulse/functioning-and-disability.htm"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/nchs/covid19/pulse/functioning-and-disability.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-4c341c77",
   "fingerprint": "aada626a",
   "rule_id": "sia-r85",
   "rule_label": "Keyboard trap does not exist",
   "engine": "alfa",
   "tool": "Siteimprove Alfa",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": "https://alfa.siteimprove.com/rules/sia-r85",
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "low",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W25",
    "last_observed": "2026-W27",
    "weeks_observed": 3,
    "affected_pages_current": 1,
    "affected_pages_previous": 2
   },
   "frequency": {
    "instances": 13,
    "pages_affected": 1,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Keyboard trap does not exist (WCAG criterion undetermined)",
   "description": "Keyboard trap does not exist. Detected by Siteimprove Alfa rule sia-r85 on 1 of 1667 scanned pages (13 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r85",
   "expected_behavior": "Element passes Siteimprove Alfa rule sia-r85.",
   "actual_behavior": "Keyboard trap does not exist. Detected by Siteimprove Alfa rule sia-r85 on 1 of 1667 scanned pages (13 instances).",
   "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/volumes/65/wr/mm6540a10.htm?s_cid=mm6540a10_w"
   ],
   "html_fragments": [],
   "url_patterns": [
    {
     "pattern": "/mmwr/volumes/{id}/wr/mm6540a10.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-a84da368",
   "fingerprint": "d5f99286",
   "rule_id": "blink-element",
   "rule_label": "Obsolete <blink> element",
   "engine": "deprecated-html",
   "tool": "deprecated-html",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Undetermined",
   "rule_url": null,
   "severity": "Moderate",
   "priority": "p3",
   "confidence": "low",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W25",
    "last_observed": "2026-W27",
    "weeks_observed": 3,
    "affected_pages_current": 1,
    "affected_pages_previous": 1
   },
   "frequency": {
    "instances": 1,
    "pages_affected": 1,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Obsolete <blink> element (WCAG criterion undetermined)",
   "description": "Obsolete <blink> element. Detected by deprecated-html rule blink-element on 1 of 1667 scanned pages (1 instances).",
   "remediation_tip": null,
   "suggested_fix": "Not captured by automated scan — requires manual testing.",
   "expected_behavior": "Element passes deprecated-html rule blink-element.",
   "actual_behavior": "Obsolete <blink> element. Detected by deprecated-html rule blink-element on 1 of 1667 scanned pages (1 instances).",
   "testing_environment": "Automated: deprecated-html, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/m2e411a1.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "e4fef150",
     "html": "<blink><big><strong>Disclaimer</strong></big></blink>",
     "selectors": [
      "blink"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/m2e411a1.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-4fac2f41",
   "fingerprint": "550210da",
   "rule_id": "aria-allowed-role",
   "rule_label": "ARIA role should be appropriate for the element",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Best Practice",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/aria-allowed-role?application=axeAPI",
   "severity": "Minor",
   "priority": "p4",
   "confidence": "high",
   "rationale": "Minor severity on 29 pages",
   "trend": {
    "status": "improving",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 29,
    "affected_pages_previous": 144
   },
   "frequency": {
    "instances": 38,
    "pages_affected": 29,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "ARIA role should be appropriate for the element (WCAG criterion undetermined)",
   "description": "ARIA role should be appropriate for the element. Detected by axe-core rule aria-allowed-role on 29 of 1667 scanned pages (38 instances).",
   "remediation_tip": "Remove or change the ARIA role — it isn't allowed on this element type.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/aria-allowed-role?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule aria-allowed-role.",
   "actual_behavior": "ARIA role should be appropriate for the element. Detected by axe-core rule aria-allowed-role on 29 of 1667 scanned pages (38 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/vitalsigns/hepc-treatment/index.html",
    "https://www.cdc.gov/spanish/NIOSH/docs/wp-solutions/2010-113_sp",
    "https://www.cdc.gov/spanish/NIOSH/docs/2005-155_sp"
   ],
   "html_fragments": [
    {
     "fingerprint": "e8582464",
     "html": "<img decoding=\"async\" class=\"img-fluid\" alt=\"shield icon\" role=\"presentation\" src=\"/vitalsigns/template-options/images/shield-icon.png?_=40314\">",
     "selectors": [
      ".d-xxl-none.d-xl-block.cdc-viewports:nth-child(4) > .ds-8.card-btn[href$=\"#challenge\"] > .card-p-right.bg-white.card-body > .align-items-center.row > .card-body-left.col > .vs-resize > img[alt=\"shield icon\"][role=\"presentation\"][decoding=\"async\"]"
     ]
    },
    {
     "fingerprint": "648e6fb7",
     "html": "<img decoding=\"async\" class=\"img-fluid\" alt=\"scales icon\" role=\"presentation\" src=\"/vitalsigns/template-options/images/scales-icon.png?_=40314\">",
     "selectors": [
      ".d-xxl-none.d-xl-block.cdc-viewports:nth-child(5) > .ds-8.card-btn[href$=\"#equity\"] > .card-p-right.bg-white.card-body > .align-items-center.row > .card-body-left.col > .vs-resize > img[alt=\"scales icon\"][role=\"presentation\"][decoding=\"async\"]"
     ]
    },
    {
     "fingerprint": "21799205",
     "html": "<img decoding=\"async\" class=\"img-fluid\" alt=\"hand holding lightbulb icon\" role=\"presentation\" src=\"/vitalsigns/template-options/images/hand-lightbulb-icon.png?_=84571\">",
     "selectors": [
      ".d-xxl-none.d-xl-block.cdc-viewports:nth-child(6) > .ds-8.card-btn[href$=\"#bedone\"] > .card-p-right.bg-white.card-body > .align-items-center.row > .card-body-left.col > .vs-resize > img[alt=\"hand holding lightbulb icon\"][role=\"presentation\"][decoding=\"async\"]"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/niosh/docs/{id}-132",
     "count": 2
    },
    {
     "pattern": "/vitalsigns/hepc-treatment/index.html",
     "count": 1
    },
    {
     "pattern": "/spanish/NIOSH/docs/wp-solutions/{id}-113_sp",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-d69fc059",
   "fingerprint": "c827d812",
   "rule_id": "empty-table-header",
   "rule_label": "Table header text should not be empty",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Best Practice",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/empty-table-header?application=axeAPI",
   "severity": "Minor",
   "priority": "p4",
   "confidence": "high",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 29,
    "affected_pages_previous": 61
   },
   "frequency": {
    "instances": 396,
    "pages_affected": 29,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Table header text should not be empty (WCAG criterion undetermined)",
   "description": "Table header text should not be empty. Detected by axe-core rule empty-table-header on 29 of 1667 scanned pages (396 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/empty-table-header?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule empty-table-header.",
   "actual_behavior": "Table header text should not be empty. Detected by axe-core rule empty-table-header on 29 of 1667 scanned pages (396 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/nchs/nsfg/key_statistics/i-keystat.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5827a4.htm",
    "http://www.cdc.gov/pcd/issues/2008/oct/08_0060_es.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "e6a9d852",
     "html": "<th scope=\"col\"></th>",
     "selectors": [
      ".table-responsive:nth-child(5) > table > thead > .valign-middle:nth-child(1) > th[scope=\"col\"]:nth-child(1)",
      ".table-responsive:nth-child(5) > table > thead > .valign-middle:nth-child(2) > th[scope=\"col\"]:nth-child(1)",
      ".table-responsive:nth-child(9) > table > thead > tr:nth-child(1) > th[scope=\"col\"]:nth-child(1)"
     ]
    },
    {
     "fingerprint": "5ffe7551",
     "html": "<th class=\"column-head\" scope=\"col\">\n\t\t\t\t\t\t\t</th>",
     "selectors": [
      ".column-head:nth-child(10)",
      ".column-head:nth-child(11)"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/nchs/nsfg/key_statistics/i-keystat.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5827a4.htm",
     "count": 1
    },
    {
     "pattern": "/pcd/issues/{id}/oct/{id}_0060_es.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-0066c67d",
   "fingerprint": "67db3700",
   "rule_id": "empty-heading",
   "rule_label": "Headings should not be empty",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Best Practice",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/empty-heading?application=axeAPI",
   "severity": "Minor",
   "priority": "p4",
   "confidence": "high",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 11,
    "affected_pages_previous": 41
   },
   "frequency": {
    "instances": 21,
    "pages_affected": 11,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Headings should not be empty (WCAG criterion undetermined)",
   "description": "Headings should not be empty. Detected by axe-core rule empty-heading on 11 of 1667 scanned pages (21 instances).",
   "remediation_tip": "Remove empty headings or give them text. Don't use heading tags for spacing.",
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/empty-heading?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule empty-heading.",
   "actual_behavior": "Headings should not be empty. Detected by axe-core rule empty-heading on 11 of 1667 scanned pages (21 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5715a5.htm",
    "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5615a6.htm",
    "https://www.cdc.gov/nchs/nsfg/nsfg_combining_data.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "49d5321b",
     "html": "<h3></h3>",
     "selectors": [
      "li:nth-child(2) > h3",
      "li > h3"
     ]
    },
    {
     "fingerprint": "b4b681a0",
     "html": "<h2><!-- --></h2>",
     "selectors": [
      "h2"
     ]
    },
    {
     "fingerprint": "098132dc",
     "html": "<h3 class=\"h4\"><a id=\"pdf\" name=\"pdf\"></a></h3>",
     "selectors": [
      "h3:nth-child(2)"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5715a5.htm",
     "count": 1
    },
    {
     "pattern": "/mmwr/preview/mmwrhtml/mm5615a6.htm",
     "count": 1
    },
    {
     "pattern": "/nchs/nsfg/nsfg_combining_data.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  },
  {
   "finding_id": "VS-f528778d",
   "fingerprint": "042912c2",
   "rule_id": "image-redundant-alt",
   "rule_label": "Alternative text of images should not be repeated as text",
   "engine": "axe-core",
   "tool": "axe-core",
   "wcag_sc": null,
   "wcag_name": null,
   "wcag_level": null,
   "wcag_version": null,
   "wcag_category": "Best Practice",
   "rule_url": "https://dequeuniversity.com/rules/axe/4.12/image-redundant-alt?application=axeAPI",
   "severity": "Minor",
   "priority": "p4",
   "confidence": "low",
   "rationale": "persistent across weeks",
   "trend": {
    "status": "persistent",
    "first_observed": "2026-W24",
    "last_observed": "2026-W27",
    "weeks_observed": 4,
    "affected_pages_current": 2,
    "affected_pages_previous": 3
   },
   "frequency": {
    "instances": 2,
    "pages_affected": 2,
    "total_pages_scanned": 1667
   },
   "on_key_page": false,
   "summary": "Alternative text of images should not be repeated as text (WCAG criterion undetermined)",
   "description": "Alternative text of images should not be repeated as text. Detected by axe-core rule image-redundant-alt on 2 of 1667 scanned pages (2 instances).",
   "remediation_tip": null,
   "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/image-redundant-alt?application=axeAPI",
   "expected_behavior": "Element passes axe-core rule image-redundant-alt.",
   "actual_behavior": "Alternative text of images should not be repeated as text. Detected by axe-core rule image-redundant-alt on 2 of 1667 scanned pages (2 instances).",
   "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.",
   "representative_urls": [
    "https://www.cdc.gov/mmwr/volumes/66/wr/mm6627a1.htm",
    "https://www.cdc.gov/nchs/deaths.htm"
   ],
   "html_fragments": [
    {
     "fingerprint": "072e1e3a",
     "html": "<img decoding=\"async\" class=\"img-fluid\" alt=\"The figure above is a histogram, an epidemiologic curve showing the 65 measles cases by date of rash onset in an outbreak in Minnesota during March 30–May ",
     "selectors": [
      "img[title=\"m6627a1f1\"]"
     ]
    },
    {
     "fingerprint": "da7c1aee",
     "html": "<img decoding=\"async\" src=\"/nchs/images/nvss/maternal-mortality-statistics.png?_=57189\" alt=\"Maternal Mortality\" class=\"card-img-top img-fluid p-2 bg-white\">",
     "selectors": [
      "img[alt=\"Maternal Mortality\"]"
     ]
    }
   ],
   "url_patterns": [
    {
     "pattern": "/mmwr/volumes/{id}/wr/mm6627a1.htm",
     "count": 1
    },
    {
     "pattern": "/nchs/deaths.htm",
     "count": 1
    }
   ],
   "associated_technologies": [],
   "impact": {
    "groups": [],
    "summary": "Not captured by automated scan — requires manual testing."
   }
  }
 ],
 "clusters": {
  "by_wcag_criterion": [
   {
    "cluster_id": "0649d9b9",
    "type": "wcag_criterion",
    "wcag_sc": null,
    "wcag_name": null,
    "wcag_level": null,
    "findings": [
     "VS-f18df681"
    ],
    "total_pages_affected": 1580,
    "max_severity": "Serious"
   },
   {
    "cluster_id": "b393058c",
    "type": "wcag_criterion",
    "wcag_sc": "2.5.5",
    "wcag_name": "Target Size (Enhanced)",
    "wcag_level": "AAA",
    "findings": [
     "VS-cb53cc4d"
    ],
    "total_pages_affected": 781,
    "max_severity": "Moderate"
   },
   {
    "cluster_id": "71f257a8",
    "type": "wcag_criterion",
    "wcag_sc": "1.4.6",
    "wcag_name": "Contrast (Enhanced)",
    "wcag_level": "AAA",
    "findings": [
     "VS-646b1e0b"
    ],
    "total_pages_affected": 634,
    "max_severity": "Moderate"
   },
   {
    "cluster_id": "d68f5631",
    "type": "wcag_criterion",
    "wcag_sc": "1.4.3",
    "wcag_name": "Contrast (Minimum)",
    "wcag_level": "AA",
    "findings": [
     "VS-be8d563e",
     "VS-f7e99f4b"
    ],
    "total_pages_affected": 620,
    "max_severity": "Serious"
   },
   {
    "cluster_id": "140fec0b",
    "type": "wcag_criterion",
    "wcag_sc": "1.4.8",
    "wcag_name": "Visual Presentation",
    "wcag_level": "AAA",
    "findings": [
     "VS-2208081b",
     "VS-fbf54eba",
     "VS-388b5438"
    ],
    "total_pages_affected": 591,
    "max_severity": "Moderate"
   },
   {
    "cluster_id": "36ac08de",
    "type": "wcag_criterion",
    "wcag_sc": null,
    "wcag_name": null,
    "wcag_level": null,
    "findings": [
     "VS-c18be945"
    ],
    "total_pages_affected": 556,
    "max_severity": "Moderate"
   },
   {
    "cluster_id": "945c7205",
    "type": "wcag_criterion",
    "wcag_sc": "1.1.1",
    "wcag_name": "Non-text Content",
    "wcag_level": "A",
    "findings": [
     "VS-9074b4dd",
     "VS-a24eaa8c"
    ],
    "total_pages_affected": 542,
    "max_severity": "Critical"
   },
   {
    "cluster_id": "e08c8d69",
    "type": "wcag_criterion",
    "wcag_sc": null,
    "wcag_name": null,
    "wcag_level": null,
    "findings": [
     "VS-d25f622d"
    ],
    "total_pages_affected": 536,
    "max_severity": "Moderate"
   },
   {
    "cluster_id": "8af1f05d",
    "type": "wcag_criterion",
    "wcag_sc": "3.1.1",
    "wcag_name": "Language of Page",
    "wcag_level": "A",
    "findings": [
     "VS-c126b6a6",
     "VS-7a0e5645"
    ],
    "total_pages_affected": 510,
    "max_severity": "Serious"
   },
   {
    "cluster_id": "c7d2a838",
    "type": "wcag_criterion",
    "wcag_sc": null,
    "wcag_name": null,
    "wcag_level": null,
    "findings": [
     "VS-8806389c"
    ],
    "total_pages_affected": 475,
    "max_severity": "Moderate"
   },
   {
    "cluster_id": "91fd3b4c",
    "type": "wcag_criterion",
    "wcag_sc": null,
    "wcag_name": null,
    "wcag_level": null,
    "findings": [
     "VS-d5d82446"
    ],
    "total_pages_affected": 426,
    "max_severity": "Moderate"
   },
   {
    "cluster_id": "0c75ddb8",
    "type": "wcag_criterion",
    "wcag_sc": null,
    "wcag_name": null,
    "wcag_level": null,
    "findings": [
     "VS-e05344b9"
    ],
    "total_pages_affected": 391,
    "max_severity": "Moderate"
   },
   {
    "cluster_id": "24c4a455",
    "type": "wcag_criterion",
    "wcag_sc": "2.5.8",
    "wcag_name": "Target Size (Minimum)",
    "wcag_level": "AA",
    "findings": [
     "VS-179ad9b3"
    ],
    "total_pages_affected": 285,
    "max_severity": "Moderate"
   },
   {
    "cluster_id": "b05da4e9",
    "type": "wcag_criterion",
    "wcag_sc": null,
    "wcag_name": null,
    "wcag_level": null,
    "findings": [
     "VS-f054f4a4"
    ],
    "total_pages_affected": 273,
    "max_severity": "Moderate"
   },
   {
    "cluster_id": "81ed7223",
    "type": "wcag_criterion",
    "wcag_sc": null,
    "wcag_name": null,
    "wcag_level": null,
    "findings": [
     "VS-3d033717"
    ],
    "total_pages_affected": 215,
    "max_severity": "Moderate"
   },
   {
    "cluster_id": "3b489eee",
    "type": "wcag_criterion",
    "wcag_sc": "2.4.4",
    "wcag_name": "Link Purpose (In Context)",
    "wcag_level": "A",
    "findings": [
     "VS-e9fe47ac",
     "VS-28ebd979"
    ],
    "total_pages_affected": 184,
    "max_severity": "Serious"
   },
   {
    "cluster_id": "423bd52e",
    "type": "wcag_criterion",
    "wcag_sc": "1.3.1",
    "wcag_name": "Info and Relationships",
    "wcag_level": "A",
    "findings": [
     "VS-a0bdbdf6",
     "VS-07ba3b17",
     "VS-6175596b",
     "VS-9429bb8d",
     "VS-d6097011",
     "VS-4408605e",
     "VS-9207ed51",
     "VS-3c632d31",
     "VS-3f067795",
     "VS-33b49e3b"
    ],
    "total_pages_affected": 132,
    "max_severity": "Critical"
   },
   {
    "cluster_id": "a849192e",
    "type": "wcag_criterion",
    "wcag_sc": "4.1.2",
    "wcag_name": "Name, Role, Value",
    "wcag_level": "A",
    "findings": [
     "VS-fafffee0",
     "VS-3f76c7ea",
     "VS-5c82bd60",
     "VS-58301a87",
     "VS-fab92378",
     "VS-a48e6078",
     "VS-29f9f921",
     "VS-a2a3dffb"
    ],
    "total_pages_affected": 122,
    "max_severity": "Critical"
   },
   {
    "cluster_id": "b8f97020",
    "type": "wcag_criterion",
    "wcag_sc": null,
    "wcag_name": null,
    "wcag_level": null,
    "findings": [
     "VS-fa44f293"
    ],
    "total_pages_affected": 94,
    "max_severity": "Moderate"
   },
   {
    "cluster_id": "75cf28e4",
    "type": "wcag_criterion",
    "wcag_sc": null,
    "wcag_name": null,
    "wcag_level": null,
    "findings": [
     "VS-7118fead"
    ],
    "total_pages_affected": 90,
    "max_severity": "Moderate"
   }
  ],
  "by_url_pattern": [
   {
    "cluster_id": "d954bf4c",
    "type": "url_pattern",
    "pattern": "/mmwr/preview/mmwrhtml/{id}.htm",
    "findings": [
     "VS-a0bdbdf6",
     "VS-91d2294a",
     "VS-7845739d",
     "VS-f2542d87"
    ],
    "total_pages": 56
   },
   {
    "cluster_id": "d437063e",
    "type": "url_pattern",
    "pattern": "/hepatitis/php/npr-2023/hep-c-reduce-infections.html",
    "findings": [
     "VS-5c82bd60",
     "VS-29f9f921",
     "VS-c461a167"
    ],
    "total_pages": 3
   },
   {
    "cluster_id": "60d1759b",
    "type": "url_pattern",
    "pattern": "/hepatitis/php/npr-2025/hep-b-reduce-deaths.html",
    "findings": [
     "VS-5c82bd60",
     "VS-29f9f921",
     "VS-c461a167"
    ],
    "total_pages": 3
   },
   {
    "cluster_id": "e10e393e",
    "type": "url_pattern",
    "pattern": "/nhsn/training/continuing-edu/cbts.html",
    "findings": [
     "VS-58301a87",
     "VS-9429bb8d",
     "VS-a2a3dffb"
    ],
    "total_pages": 3
   },
   {
    "cluster_id": "88c6021d",
    "type": "url_pattern",
    "pattern": "/nchs/deaths.htm",
    "findings": [
     "VS-3f067795",
     "VS-efd91fdd",
     "VS-f528778d"
    ],
    "total_pages": 3
   },
   {
    "cluster_id": "6e0e23c1",
    "type": "url_pattern",
    "pattern": "/niosh/newsroom/feature/needlestick_disposal.html",
    "findings": [
     "VS-30db094d",
     "VS-054101da",
     "VS-aa242c2d"
    ],
    "total_pages": 3
   },
   {
    "cluster_id": "0e378073",
    "type": "url_pattern",
    "pattern": "/alcohol/ardi/methods.html",
    "findings": [
     "VS-58301a87",
     "VS-a2a3dffb"
    ],
    "total_pages": 2
   },
   {
    "cluster_id": "1ad35f9e",
    "type": "url_pattern",
    "pattern": "/mmwr/preview/mmwrhtml/mm5906a6.htm",
    "findings": [
     "VS-c80d5faa",
     "VS-0728f339"
    ],
    "total_pages": 2
   },
   {
    "cluster_id": "11e1976a",
    "type": "url_pattern",
    "pattern": "/ncird/surveillance/respiratory-illnesses/index.html",
    "findings": [
     "VS-9207ed51",
     "VS-33b49e3b"
    ],
    "total_pages": 2
   }
  ]
 },
 "technology_findings": [
  {
   "technology": "DreamWeaver",
   "finding": "axe:label",
   "lift": 28.17,
   "pages_with_both": 6,
   "technology_pages": 6,
   "interpretation": "Pages using DreamWeaver are 28.17× more likely to have finding axe:label."
  },
  {
   "technology": "Moment.js",
   "finding": "axe:label",
   "lift": 28.17,
   "pages_with_both": 6,
   "technology_pages": 6,
   "interpretation": "Pages using Moment.js are 28.17× more likely to have finding axe:label."
  },
  {
   "technology": "DreamWeaver",
   "finding": "axe:color-contrast",
   "lift": 4.83,
   "pages_with_both": 6,
   "technology_pages": 6,
   "interpretation": "Pages using DreamWeaver are 4.83× more likely to have finding axe:color-contrast."
  },
  {
   "technology": "Moment.js",
   "finding": "axe:color-contrast",
   "lift": 4.83,
   "pages_with_both": 6,
   "technology_pages": 6,
   "interpretation": "Pages using Moment.js are 4.83× more likely to have finding axe:color-contrast."
  },
  {
   "technology": "DreamWeaver",
   "finding": "axe:landmark-one-main",
   "lift": 4.23,
   "pages_with_both": 6,
   "technology_pages": 6,
   "interpretation": "Pages using DreamWeaver are 4.23× more likely to have finding axe:landmark-one-main."
  },
  {
   "technology": "Moment.js",
   "finding": "axe:landmark-one-main",
   "lift": 4.23,
   "pages_with_both": 6,
   "technology_pages": 6,
   "interpretation": "Pages using Moment.js are 4.23× more likely to have finding axe:landmark-one-main."
  },
  {
   "technology": "D3",
   "finding": "alfa:sia-r53",
   "lift": 2.6,
   "pages_with_both": 6,
   "technology_pages": 13,
   "interpretation": "Pages using D3 are 2.6× more likely to have finding alfa:sia-r53."
  },
  {
   "technology": "D3",
   "finding": "axe:heading-order",
   "lift": 2.56,
   "pages_with_both": 12,
   "technology_pages": 13,
   "interpretation": "Pages using D3 are 2.56× more likely to have finding axe:heading-order."
  }
 ],
 "third_party_findings": [
  {
   "origin": "googletagmanager.com",
   "pages_served": 441,
   "pages_with_findings": 441,
   "finding_co_occurrence_rate": 1,
   "median_bytes": 154602,
   "example_pages": [
    "https://www.cdc.gov/niosh/docket/archive/docket229A.html",
    "https://www.cdc.gov/vitalsigns/hepc-treatment/index.html",
    "https://www.cdc.gov/niosh/newsroom/updates/upd-04-08-24.html"
   ]
  },
  {
   "origin": "google-analytics.com",
   "pages_served": 441,
   "pages_with_findings": 441,
   "finding_co_occurrence_rate": 1,
   "median_bytes": 0,
   "example_pages": [
    "https://www.cdc.gov/niosh/docket/archive/docket229A.html",
    "https://www.cdc.gov/vitalsigns/hepc-treatment/index.html",
    "https://www.cdc.gov/niosh/newsroom/updates/upd-04-08-24.html"
   ]
  },
  {
   "origin": "altmetric.com",
   "pages_served": 66,
   "pages_with_findings": 66,
   "finding_co_occurrence_rate": 1,
   "median_bytes": 170353,
   "example_pages": [
    "https://www.cdc.gov/mmwr/volumes/71/wr/mm7101a3.htm?s_cid=mm7101a3_w",
    "https://www.cdc.gov/pcd/issues/2016/16_0044r.htm",
    "https://www.cdc.gov/pcd/issues/2017/17_0013.htm"
   ]
  },
  {
   "origin": "cloudfront.net",
   "pages_served": 66,
   "pages_with_findings": 66,
   "finding_co_occurrence_rate": 1,
   "median_bytes": 687,
   "example_pages": [
    "https://www.cdc.gov/mmwr/volumes/71/wr/mm7101a3.htm?s_cid=mm7101a3_w",
    "https://www.cdc.gov/pcd/issues/2016/16_0044r.htm",
    "https://www.cdc.gov/pcd/issues/2017/17_0013.htm"
   ]
  },
  {
   "origin": "dimensions.ai",
   "pages_served": 18,
   "pages_with_findings": 18,
   "finding_co_occurrence_rate": 1,
   "median_bytes": 677470,
   "example_pages": [
    "https://www.cdc.gov/mmwr/volumes/71/wr/mm7101a3.htm?s_cid=mm7101a3_w",
    "https://www.cdc.gov/mmwr/volumes/67/rr/rr6701a1.htm",
    "https://www.cdc.gov/mmwr/volumes/73/wr/mm7304a6.htm?s_cid=mm7304a6_w"
   ]
  }
 ],
 "metadata": {
  "generator": "vital-core",
  "schema_version": "0.1",
  "total_pages_scanned": 1667,
  "notes": [
   "Healthy pages (no known issues) are intentionally excluded.",
   "Representative examples are used instead of complete occurrence lists.",
   "Fingerprints are stable hashes for tracking recurring patterns over time.",
   "Fragment fingerprints normalize volatile attributes (id, style, data-*) before hashing.",
   "Technology lift values indicate association, not causation.",
   "Confidence reflects sample size: high=10+ affected pages, medium=3-9, low=1-2."
  ]
 }
}