{ "domain": "www.cdc.gov", "week": "2026-W36", "generatedAt": "2026-09-05T15:31:50.676Z", "reports": [ { "instance_id": "VS-94ae261b", "pattern_id": "VS-179ad9b3", "a11y_pattern_fingerprint": "a85f7841d6d258839aa49175b3807f2b26f2d9c09aa5a9db308c9180f668c523", "a11y_pattern_display_id": "A11Y-PAT-A85F7841D6D2", "a11y_occurrence_fingerprint": "60f5e20b621a041ba0552f71079854157826d84bcfa9c80a94f5d5de1fee7b84", "a11y_occurrence_display_id": "A11Y-OCC-60F5E20B621A", "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm", "xpath": "", "html_snippet": null, "wcag_sc": "2.5.8", "wcag_name": "Target Size (Minimum)", "wcag_level": "AA", "wcag_version": "2.2", "wcag_category": "WCAG 2.2 AA", "evidence_status": "automated-indicator", "rule_id": "sia-r113", "rule_label": "Target size is at least 24×24 CSS pixels or has spacing (Minimum)", "engine_key": "alfa", "tool": "Siteimprove Alfa", "rule_url": "https://alfa.siteimprove.com/rules/sia-r113", "severity": "Moderate", "frequency": { "instances": 2804, "pages_affected": 268, "total_pages_scanned": 3331 }, "likely_source": "template", "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 268 of 3331 scanned pages (2804 instances).", "examples": [ { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm", "xpath": "", "html_snippet": null }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm", "xpath": "", "html_snippet": null }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm", "xpath": "", "html_snippet": null }, { "url": "http://www.cdc.gov/mmwr/preview/mmwrhtml/00018168.htm", "xpath": "", "html_snippet": null }, { "url": "http://www.cdc.gov/mmwr/preview/mmwrhtml/00018168.htm", "xpath": "", "html_snippet": null } ], "example_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00018168.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00038679.htm" ], "affected_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00018168.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00038679.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5504a1.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00044106.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/rr4901a2.htm", "https://www.cdc.gov/pcd/issues/2008/oct/07_0173_fr.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00056742.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5019a2.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00016678.htm", "https://www.cdc.gov/pcd/issues/2013/12_0317.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5144md.htm", "https://www.cdc.gov/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10151", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00051799.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00037085.htm", "https://www.cdc.gov/pcd/issues/2013/13_0202.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6422a4.htm?s_cid=mm6422a4_w", "https://www.cdc.gov/nchs/products/databriefs/db250.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6040md.htm?s_cid=mm6040md_w", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5834a4.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5913a4.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5624a4.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00054602.htm", "https://www.cdc.gov/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10581", "http://www.cdc.gov/hepatitis/statistics/2020surveillance/hepatitis-a/figure-1.5.htm" ], "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%)." }, "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.", "steps_to_reproduce": [ "Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm.", "Locate the element: ", "Confirm the Siteimprove Alfa finding for rule sia-r113 against WCAG 2.5.8 Target Size (Minimum)." ], "remediation_tip": null, "tech_name": null, "tech_remediation_tip": null, "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r113", "obligation": "required", "handling": "review", "policy_source": "default", "policy_reason": null, "policy_evidence": [], "policy_owner": null, "policy_expires": null, "included_in_primary_score": false, "first_seen": "2026-W24", "last_seen": "2026-W36", "weeks_seen": 13, "affected_pages_csv": "csv/alfa__sia-r113.csv" }, { "instance_id": "VS-c772ba06", "pattern_id": "VS-f7dba940", "a11y_pattern_fingerprint": "20a323a6eac9b8ab270204f723d35a90ade9bc6efeca474a379746e6c3dfbdfb", "a11y_pattern_display_id": "A11Y-PAT-20A323A6EAC9", "a11y_occurrence_fingerprint": "3956f06b36556e3385f39ade90f8bdbabe13d3671a5616f5205c28dac27a3a7a", "a11y_occurrence_display_id": "A11Y-OCC-3956F06B3655", "url": "http://www.cdc.gov/antimicrobial-resistance-laboratory-networks/site.html", "xpath": "", "html_snippet": null, "wcag_sc": "2.5.3", "wcag_name": "Label in Name", "wcag_level": "A", "wcag_version": "2.1", "wcag_category": "WCAG 2.1 A", "evidence_status": "automated-indicator", "rule_id": "sia-r14", "rule_label": "Accessible name of link or button matches visible label", "engine_key": "alfa", "tool": "Siteimprove Alfa", "rule_url": "https://alfa.siteimprove.com/rules/sia-r14", "severity": "Moderate", "frequency": { "instances": 148, "pages_affected": 81, "total_pages_scanned": 3331 }, "likely_source": "template", "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 81 of 3331 scanned pages (148 instances).", "examples": [ { "url": "http://www.cdc.gov/antimicrobial-resistance-laboratory-networks/site.html", "xpath": "", "html_snippet": null }, { "url": "http://www.cdc.gov/mosquitoes/es/during-an-outbreak/lo-que-usted-puede-hacer-para-controlar-los-mosquitos-durante-un-brote.html", "xpath": "", "html_snippet": null }, { "url": "http://www.cdc.gov/mosquitoes/es/during-an-outbreak/lo-que-usted-puede-hacer-para-controlar-los-mosquitos-durante-un-brote.html", "xpath": "", "html_snippet": null }, { "url": "https://www.cdc.gov/cronobacter/communication-resources/vlog-preventing-cronobacter-in-infants.html", "xpath": "Cronobacter Infection\">", "html_snippet": null }, { "url": "https://www.cdc.gov/food-service-guidelines-toolkit/php/monitor-evaluate/index.html", "xpath": "", "html_snippet": null } ], "example_pages": [ "http://www.cdc.gov/antimicrobial-resistance-laboratory-networks/site.html", "http://www.cdc.gov/mosquitoes/es/during-an-outbreak/lo-que-usted-puede-hacer-para-controlar-los-mosquitos-durante-un-brote.html", "https://www.cdc.gov/cronobacter/communication-resources/vlog-preventing-cronobacter-in-infants.html" ], "affected_pages": [ "http://www.cdc.gov/antimicrobial-resistance-laboratory-networks/site.html", "http://www.cdc.gov/mosquitoes/es/during-an-outbreak/lo-que-usted-puede-hacer-para-controlar-los-mosquitos-durante-un-brote.html", "https://www.cdc.gov/cronobacter/communication-resources/vlog-preventing-cronobacter-in-infants.html", "https://www.cdc.gov/food-service-guidelines-toolkit/php/monitor-evaluate/index.html", "http://www.cdc.gov/public-health-gateway/php/funding/national-partners-cooperative-agreement.html", "http://www.cdc.gov/listeria/php/surveillance/surveillance.html", "http://www.cdc.gov/overdose-prevention/treatment/opioid-use-disorder.html", "https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/flu/hcp/antivirals/summary-clinicians.html", "http://www.cdc.gov/nchhstp/director-letters/2026-hepatitis-awareness.html", "https://www.cdc.gov/colorectal-cancer/es/stories/index.html", "http://www.cdc.gov/media/es/releases/2026/2026-declaracion-sobre-el-crucero-m-v-hondius.html", "http://www.cdc.gov/overdose-prevention/manage-treat-pain/reduce-risks.html", "https://www.cdc.gov/vaccines-children/hcp/index.html", "http://www.cdc.gov/zika/es/testing/pruebas-de-deteccion-del-virus-del-zika.html", "http://www.cdc.gov/think-test-treat-tb/communication-resources/poster.html", "https://www.cdc.gov/act-early/es/digital-online-checklist/3-years.html", "http://www.cdc.gov/cyclosporiasis/es/data-research/paises-o-regiones-con-riesgo-de-ciclosporosis.html", "http://www.cdc.gov/niosh/publications/es/numbered/2015-103sp.html", "https://www.cdc.gov/budget/congressional-justification", "http://www.cdc.gov/cancer-survivors/es/patients/side-effects-of-treatment.html", "http://www.cdc.gov/act-early/resources/home-visiting-programs-primer.html", "https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/acip-recs/hcp/vaccine-specific/meningococcal.html", "http://www.cdc.gov/antimicrobial-resistance-laboratory-networks/php/about/index.html", "http://www.cdc.gov/stroke/es/about/acerca-de-las-mujeres-y-los-accidentes-cerebrovasculares.html", "http://www.cdc.gov/diabetes/es/healthy-eating/como-identificar-azucares-ocultos-en-los-alimentos-cotidianos.html" ], "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%)." }, "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.", "steps_to_reproduce": [ "Open http://www.cdc.gov/antimicrobial-resistance-laboratory-networks/site.html.", "Locate the element: ", "Confirm the Siteimprove Alfa finding for rule sia-r14 against WCAG 2.5.3 Label in Name." ], "remediation_tip": null, "tech_name": null, "tech_remediation_tip": null, "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r14", "obligation": "required", "handling": "review", "policy_source": "default", "policy_reason": null, "policy_evidence": [], "policy_owner": null, "policy_expires": null, "included_in_primary_score": false, "first_seen": "2026-W24", "last_seen": "2026-W36", "weeks_seen": 13, "affected_pages_csv": "csv/alfa__sia-r14.csv" }, { "instance_id": "VS-6ff36578", "pattern_id": "VS-9074b4dd", "a11y_pattern_fingerprint": "a63aeb2e943401209ab1a27548f4db2826919c02cf8213d2900e7cb35f61d431", "a11y_pattern_display_id": "A11Y-PAT-A63AEB2E9434", "a11y_occurrence_fingerprint": "12e30a5b29567e653bba1626310b8ac76e3f215de1f38f3871c785dc21a1a0aa", "a11y_occurrence_display_id": "A11Y-OCC-12E30A5B2956", "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00018131.htm", "xpath": "td[rowspan=\"2\"][width=\"10\"]:nth-child(1) > img[alt=\" \"][width=\"10\"][src$=\"spacer.gif\"]", "html_snippet": "\"", "wcag_sc": "1.1.1", "wcag_name": "Non-text Content", "wcag_level": "A", "wcag_version": "2.0", "wcag_category": "WCAG 2.0 A", "evidence_status": "automated-indicator", "rule_id": "image-alt", "rule_label": "Images must have alternative text", "engine_key": "axe-core", "tool": "axe-core", "rule_url": "https://dequeuniversity.com/rules/axe/4.12/image-alt?application=axeAPI", "severity": "Critical", "frequency": { "instances": 6773, "pages_affected": 603, "total_pages_scanned": 3331 }, "likely_source": "template", "summary": "Images must have alternative text (WCAG 1.1.1)", "description": "Images must have alternative text. Detected by axe-core rule image-alt on 603 of 3331 scanned pages (6773 instances).", "examples": [ { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00018131.htm", "xpath": "td[rowspan=\"2\"][width=\"10\"]:nth-child(1) > img[alt=\" \"][width=\"10\"][src$=\"spacer.gif\"]", "html_snippet": "\"" }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00018131.htm", "xpath": "img[height=\"10\"][alt=\" \"][src$=\"spacer.gif\"]", "html_snippet": "\"" }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00018131.htm", "xpath": "td[rowspan=\"2\"][width=\"10\"]:nth-child(3) > img[alt=\" \"][width=\"10\"][src$=\"spacer.gif\"]", "html_snippet": "\"" }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm", "xpath": "td[rowspan=\"2\"][width=\"10\"]:nth-child(1) > img[alt=\" \"][width=\"10\"][src$=\"spacer.gif\"]", "html_snippet": "\"" }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm", "xpath": "img[height=\"10\"][alt=\" \"][src$=\"spacer.gif\"]", "html_snippet": "\"" } ], "example_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00018131.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00018168.htm" ], "affected_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00018131.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00018168.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00047303.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5632a6.htm", "https://www.cdc.gov/wtc/newsYouthCohortUpdate_20251218.html", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00020832.htm", "https://www.cdc.gov/pcd/issues/2007/oct/06_0179.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00038679.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00015641.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5504a1.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4935a3.htm", "http://www.cdc.gov/pcd/issues/2005/apr/04_0135_zht.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00044106.htm", "https://www.cdc.gov/pcd/issues/2007/oct/06_0159_es.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/rr4901a2.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5048a1.htm", "https://www.cdc.gov/pcd/issues/2008/oct/07_0173_fr.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5121a2.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00056742.htm", "https://www.cdc.gov/pcd/issues/2008/apr/07_0249_es.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5739a5.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5019a2.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00016678.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00000375.htm" ], "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%)." }, "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.", "steps_to_reproduce": [ "Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00018131.htm.", "Locate the element: td[rowspan=\"2\"][width=\"10\"]:nth-child(1) > img[alt=\" \"][width=\"10\"][src$=\"spacer.gif\"]", "Confirm the axe-core finding for rule image-alt against WCAG 1.1.1 Non-text Content." ], "remediation_tip": "Give every a meaningful alt attribute. Use alt=\"\" only for decorative images so screen readers skip them.", "tech_name": "Drupal", "tech_remediation_tip": "In Drupal's Media Library, fill the \"Alternative text\" field when uploading or editing an image. For images in body fields, the CKEditor \"Image Properties\" dialog includes an Alt Text field.", "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/image-alt?application=axeAPI", "obligation": "required", "handling": "review", "policy_source": "default", "policy_reason": null, "policy_evidence": [], "policy_owner": null, "policy_expires": null, "included_in_primary_score": false, "first_seen": "2026-W24", "last_seen": "2026-W36", "weeks_seen": 13, "affected_pages_csv": "csv/axe-core__image-alt.csv" }, { "instance_id": "VS-f73ca2f7", "pattern_id": "VS-f5a62bfa", "a11y_pattern_fingerprint": "b34d037247b7dbd24abecfcbf79a9cb90d8586ac5f9c23ca024847a24bb50cff", "a11y_pattern_display_id": "A11Y-PAT-B34D037247B7", "a11y_occurrence_fingerprint": "f99848390894cfea6ebe2189b7ecb9a81e60ea5370e76016861efe42805f11a9", "a11y_occurrence_display_id": "A11Y-OCC-F99848390894", "url": "http://www.cdc.gov/obesity/php/about/consequences.html", "xpath": "object", "html_snippet": " elements must have alternative text", "engine_key": "axe-core", "tool": "axe-core", "rule_url": "https://dequeuniversity.com/rules/axe/4.12/object-alt?application=axeAPI", "severity": "Serious", "frequency": { "instances": 2, "pages_affected": 2, "total_pages_scanned": 3331 }, "likely_source": "content", "summary": " elements must have alternative text (WCAG 1.1.1)", "description": " elements must have alternative text. Detected by axe-core rule object-alt on 2 of 3331 scanned pages (2 instances).", "examples": [ { "url": "http://www.cdc.gov/obesity/php/about/consequences.html", "xpath": "object", "html_snippet": " elements alternative text describing their content.", "tech_name": null, "tech_remediation_tip": null, "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/object-alt?application=axeAPI", "obligation": "required", "handling": "review", "policy_source": "default", "policy_reason": null, "policy_evidence": [], "policy_owner": null, "policy_expires": null, "included_in_primary_score": false, "first_seen": "2026-W36", "last_seen": "2026-W36", "weeks_seen": 1, "affected_pages_csv": "csv/axe-core__object-alt.csv" }, { "instance_id": "VS-14a006ef", "pattern_id": "VS-a24eaa8c", "a11y_pattern_fingerprint": "08fcf4104776325c4249523ea3a19eb9da7511b09ae3fe405e100fb8fe2dfcd4", "a11y_pattern_display_id": "A11Y-PAT-08FCF4104776", "a11y_occurrence_fingerprint": "96c5da5f0cd68512b9d9cf7440c6618c76bb69d826f81baceeb0f1840c78c820", "a11y_occurrence_display_id": "A11Y-OCC-96C5DA5F0CD6", "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm", "xpath": "\"", "html_snippet": null, "wcag_sc": "1.1.1", "wcag_name": "Non-text Content", "wcag_level": "A", "wcag_version": "2.0", "wcag_category": "WCAG 2.0 A", "evidence_status": "automated-indicator", "rule_id": "sia-r2", "rule_label": "Image has accessible name", "engine_key": "alfa", "tool": "Siteimprove Alfa", "rule_url": "https://alfa.siteimprove.com/rules/sia-r2", "severity": "Moderate", "frequency": { "instances": 1662, "pages_affected": 150, "total_pages_scanned": 3331 }, "likely_source": "template", "summary": "Image has accessible name (WCAG 1.1.1)", "description": "Image has accessible name. Detected by Siteimprove Alfa rule sia-r2 on 150 of 3331 scanned pages (1662 instances).", "examples": [ { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm", "xpath": "\"", "html_snippet": null }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm", "xpath": "\"", "html_snippet": null }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm", "xpath": "\"", "html_snippet": null }, { "url": "http://www.cdc.gov/mmwr/preview/mmwrhtml/00018168.htm", "xpath": "\"", "html_snippet": null }, { "url": "http://www.cdc.gov/mmwr/preview/mmwrhtml/00018168.htm", "xpath": "\"", "html_snippet": null } ], "example_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00018168.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00038679.htm" ], "affected_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00018168.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00038679.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5504a1.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00044106.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/rr4901a2.htm", "https://www.cdc.gov/pcd/issues/2008/oct/07_0173_fr.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00056742.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5019a2.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00016678.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5144md.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00051799.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00037085.htm", "https://www.cdc.gov/nchs/products/databriefs/db250.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5834a4.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5624a4.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00054602.htm", "http://www.cdc.gov/PCD/issues/2011/jul/10_0123.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00018000.htm", "http://www.cdc.gov/pcd/issues/2005/apr/05_0016.htm", "https://www.cdc.gov/pcd/issues/2008/apr/07_0249_zht.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/rr4808a1.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00055311.htm", "http://www.cdc.gov/pcd/issues/2011/may/10_0007.htm", "http://www.cdc.gov/pcd/issues/2006/jan/05_0065_zht.htm" ], "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%)." }, "testing_environment": "Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.", "steps_to_reproduce": [ "Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm.", "Locate the element: \"", "Confirm the Siteimprove Alfa finding for rule sia-r2 against WCAG 1.1.1 Non-text Content." ], "remediation_tip": "Give every an accessible name (alt text), or alt=\"\" if purely decorative.", "tech_name": null, "tech_remediation_tip": null, "suggested_fix": "See remediation guidance: https://alfa.siteimprove.com/rules/sia-r2", "obligation": "required", "handling": "review", "policy_source": "default", "policy_reason": null, "policy_evidence": [], "policy_owner": null, "policy_expires": null, "included_in_primary_score": false, "first_seen": "2026-W24", "last_seen": "2026-W36", "weeks_seen": 13, "affected_pages_csv": "csv/alfa__sia-r2.csv" }, { "instance_id": "VS-df8bc071", "pattern_id": "VS-9429bb8d", "a11y_pattern_fingerprint": "eee4eacbe24f560657e9330702d2a9e2886406b9a7061d54694b41531675ce8f", "a11y_pattern_display_id": "A11Y-PAT-EEE4EACBE24F", "a11y_occurrence_fingerprint": "099f0bd3d915010ca0c801890a09bf590391962fb626a2ca1232b7a09c955d3b", "a11y_occurrence_display_id": "A11Y-OCC-099F0BD3D915", "url": "https://www.cdc.gov/vision-health-data/case-definitions/functional-limitations.html", "xpath": ".cdc-content-table", "html_snippet": "
", "wcag_sc": "1.3.1", "wcag_name": "Info and Relationships", "wcag_level": "A", "wcag_version": "2.0", "wcag_category": "WCAG 2.0 A", "evidence_status": "automated-indicator", "rule_id": "aria-required-children", "rule_label": "Certain ARIA roles must contain particular children", "engine_key": "axe-core", "tool": "axe-core", "rule_url": "https://dequeuniversity.com/rules/axe/4.12/aria-required-children?application=axeAPI", "severity": "Critical", "frequency": { "instances": 2, "pages_affected": 1, "total_pages_scanned": 3331 }, "likely_source": "content", "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 3331 scanned pages (2 instances).", "examples": [ { "url": "https://www.cdc.gov/vision-health-data/case-definitions/functional-limitations.html", "xpath": ".cdc-content-table", "html_snippet": "
" }, { "url": "https://www.cdc.gov/vision-health-data/case-definitions/functional-limitations.html", "xpath": "div[role=\"rowgroup\"]", "html_snippet": "
" } ], "example_pages": [ "https://www.cdc.gov/vision-health-data/case-definitions/functional-limitations.html" ], "affected_pages": [ "https://www.cdc.gov/vision-health-data/case-definitions/functional-limitations.html" ], "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%)." }, "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.", "steps_to_reproduce": [ "Open https://www.cdc.gov/vision-health-data/case-definitions/functional-limitations.html.", "Locate the element: .cdc-content-table", "Confirm the axe-core finding for rule aria-required-children against WCAG 1.3.1 Info and Relationships." ], "remediation_tip": "Add the child roles this container role requires (e.g. a list needs listitem children).", "tech_name": null, "tech_remediation_tip": null, "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/aria-required-children?application=axeAPI", "obligation": "required", "handling": "review", "policy_source": "default", "policy_reason": null, "policy_evidence": [], "policy_owner": null, "policy_expires": null, "included_in_primary_score": false, "first_seen": "2026-W25", "last_seen": "2026-W36", "weeks_seen": 11, "affected_pages_csv": "csv/axe-core__aria-required-children.csv" }, { "instance_id": "VS-d3b11dae", "pattern_id": "VS-f6d344d5", "a11y_pattern_fingerprint": "4bb80231b39eae71d21c5f96c0c2443202bab0f7505456b688ae38fd558cd7c2", "a11y_pattern_display_id": "A11Y-PAT-4BB80231B39E", "a11y_occurrence_fingerprint": "ddad4fcfe40a906e6f3e3fba48253e37d7fbd20b6dd6126defc3d07bff9ebf7f", "a11y_occurrence_display_id": "A11Y-OCC-DDAD4FCFE40A", "url": "https://www.cdc.gov/dpdx/ticks/index.html", "xpath": "div[data-post-id=\"10732\"] > .p-0.bg-transparent.card-body > h4", "html_snippet": "

One-Host Ixodid Tick Life Cycle

", "wcag_sc": "1.3.1", "wcag_name": "Info and Relationships", "wcag_level": "A", "wcag_version": "2.0", "wcag_category": "WCAG 2.0 A", "evidence_status": "automated-indicator", "rule_id": "aria-required-parent", "rule_label": "Certain ARIA roles must be contained by particular parents", "engine_key": "axe-core", "tool": "axe-core", "rule_url": "https://dequeuniversity.com/rules/axe/4.12/aria-required-parent?application=axeAPI", "severity": "Critical", "frequency": { "instances": 4, "pages_affected": 1, "total_pages_scanned": 3331 }, "likely_source": "content", "summary": "Certain ARIA roles must be contained by particular parents (WCAG 1.3.1)", "description": "Certain ARIA roles must be contained by particular parents. Detected by axe-core rule aria-required-parent on 1 of 3331 scanned pages (4 instances).", "examples": [ { "url": "https://www.cdc.gov/dpdx/ticks/index.html", "xpath": "div[data-post-id=\"10732\"] > .p-0.bg-transparent.card-body > h4", "html_snippet": "

One-Host Ixodid Tick Life Cycle

" }, { "url": "https://www.cdc.gov/dpdx/ticks/index.html", "xpath": "div[data-post-id=\"10730\"] > .p-0.bg-transparent.card-body > .ui-state-hover.ui-state-focus", "html_snippet": "

Two-Host Ixodid Tick Life Cycle

" }, { "url": "https://www.cdc.gov/dpdx/ticks/index.html", "xpath": "div[data-post-id=\"10710\"] > .p-0.bg-transparent.card-body > .ui-state-hover.ui-state-focus", "html_snippet": "

Three-Host Ixodid Tick Life Cycle

" } ], "example_pages": [ "https://www.cdc.gov/dpdx/ticks/index.html" ], "affected_pages": [ "https://www.cdc.gov/dpdx/ticks/index.html" ], "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%)." }, "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.", "steps_to_reproduce": [ "Open https://www.cdc.gov/dpdx/ticks/index.html.", "Locate the element: div[data-post-id=\"10732\"] > .p-0.bg-transparent.card-body > h4", "Confirm the axe-core finding for rule aria-required-parent against WCAG 1.3.1 Info and Relationships." ], "remediation_tip": "Place this ARIA role inside its required parent role (e.g. an option must be inside a listbox).", "tech_name": null, "tech_remediation_tip": null, "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/aria-required-parent?application=axeAPI", "obligation": "required", "handling": "review", "policy_source": "default", "policy_reason": null, "policy_evidence": [], "policy_owner": null, "policy_expires": null, "included_in_primary_score": false, "first_seen": "2026-W29", "last_seen": "2026-W36", "weeks_seen": 5, "affected_pages_csv": "csv/axe-core__aria-required-parent.csv" }, { "instance_id": "VS-d664cef2", "pattern_id": "VS-07ba3b17", "a11y_pattern_fingerprint": "35bf82840dbbddb24e235c2ddbd5cf8fa96c507a6fd65a6ec38e1abea6cb1af1", "a11y_pattern_display_id": "A11Y-PAT-35BF82840DBB", "a11y_occurrence_fingerprint": "d055cec720f7d32bbf60537a5eb9752c1e871fac7514ade5b01db9506b860318", "a11y_occurrence_display_id": "A11Y-OCC-D055CEC720F7", "url": "https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table7_LLCP.html", "xpath": "table", "html_snippet": "", "wcag_sc": "1.3.1", "wcag_name": "Info and Relationships", "wcag_level": "A", "wcag_version": "2.0", "wcag_category": "WCAG 2.0 A", "evidence_status": "automated-indicator", "rule_id": "td-headers-attr", "rule_label": "Table cell headers attributes must refer to other
elements in the same tabl", "engine_key": "axe-core", "tool": "axe-core", "rule_url": "https://dequeuniversity.com/rules/axe/4.12/td-headers-attr?application=axeAPI", "severity": "Serious", "frequency": { "instances": 35, "pages_affected": 29, "total_pages_scanned": 3331 }, "likely_source": "template", "summary": "Table cell headers attributes must refer to other elements in the same tabl (WCAG 1.3.1)", "description": "Table cell headers attributes must refer to other elements in the same tabl. Detected by axe-core rule td-headers-attr on 29 of 3331 scanned pages (35 instances).", "examples": [ { "url": "https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table7_LLCP.html", "xpath": "table", "html_snippet": "" }, { "url": "https://www.cdc.gov/vaccines/acip/recs/grade/pneumo-PCV20-age-based.html", "xpath": ".dfe-block--cdcmodule.cdc_page_element.dfe-block--width-wide:nth-child(28) > .dfe-block__inner > .cdc-textblock > div > .table-sm.fs08", "html_snippet": "
" }, { "url": "http://www.cdc.gov/acip/grade/influenza-older-adults.html", "xpath": ".dfe-block--width-wide.dfe-block--cdcmodule.cdc_page_element:nth-child(13) > .dfe-block__inner > .cdc-textblock > div > table", "html_snippet": "
" }, { "url": "http://www.cdc.gov/acip/grade/influenza-older-adults.html", "xpath": ".dfe-block--width-wide.dfe-block--cdcmodule.cdc_page_element:nth-child(52) > .dfe-block__inner > .cdc-textblock > div > .table-striped", "html_snippet": "
" }, { "url": "http://www.cdc.gov/acip/grade/influenza-older-adults.html", "xpath": ".fs08", "html_snippet": "
" } ], "example_pages": [ "https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table7_LLCP.html", "https://www.cdc.gov/vaccines/acip/recs/grade/pneumo-PCV20-age-based.html", "http://www.cdc.gov/acip/grade/influenza-older-adults.html" ], "affected_pages": [ "https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table7_LLCP.html", "https://www.cdc.gov/vaccines/acip/recs/grade/pneumo-PCV20-age-based.html", "http://www.cdc.gov/acip/grade/influenza-older-adults.html", "http://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table4b_LLCP.html", "https://www.cdc.gov/brfss/acbs/2011/prevalence_tables/table11a.html", "http://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table3a_LLCP.html", "https://www.cdc.gov/brfss/acbs/2018/prevalence_tables/table5_LLCP.html", "http://www.cdc.gov/acip/grade/protein-subunit-rsv-vaccines-older-adults.html", "http://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table2.html", "https://www.cdc.gov/brfss/acbs/2011/prevalence_tables/table2.html", "http://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table12.html", "https://www.cdc.gov/acip/grade/mening-vac-hiv.html", "http://www.cdc.gov/acip/grade/pneumo-PCV20-age-based.html", "http://www.cdc.gov/brfss/acbs/2009/prevalence_tables/table8a.html", "https://www.cdc.gov/surv-manual/php/table-of-contents/chapter-13-rotavirus.html", "http://www.cdc.gov/brfss/acbs/2011/prevalence_tables/table8b.html", "https://www.cdc.gov/brfss/acbs/2010/prevalence_tables/table5b.html", "https://www.cdc.gov/acip/grade/covid-19-pfizer-biontech-vaccine.html", "https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table8a_LLCP.html", "http://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table3b.html", "http://www.cdc.gov/vaccines/imz-schedules/child-easyread.html", "https://www.cdc.gov/acip/grade/tbe-travel-lab.html", "http://www.cdc.gov/brfss/acbs/2009/prevalence_tables/table5a.html", "https://www.cdc.gov/brfss/acbs/2017/multiple_year/acbs_prevalence_15-17_table1.html", "http://www.cdc.gov/nchs/data/hestat/hestat119.htm" ], "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%)." }, "testing_environment": "Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.", "steps_to_reproduce": [ "Open https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table7_LLCP.html.", "Locate the element: table", "Confirm the axe-core finding for rule td-headers-attr against WCAG 1.3.1 Info and Relationships." ], "remediation_tip": "Associate data cells with their headers correctly using headers/id or scope.", "tech_name": null, "tech_remediation_tip": null, "suggested_fix": "See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/td-headers-attr?application=axeAPI", "obligation": "required", "handling": "review", "policy_source": "default", "policy_reason": null, "policy_evidence": [], "policy_owner": null, "policy_expires": null, "included_in_primary_score": false, "first_seen": "2026-W25", "last_seen": "2026-W36", "weeks_seen": 12, "affected_pages_csv": "csv/axe-core__td-headers-attr.csv" }, { "instance_id": "VS-a5207164", "pattern_id": "VS-a0bdbdf6", "a11y_pattern_fingerprint": "4649ebd8a951ca61a9d719ef398d8b247b1a68607e7f57837747fcee45aa386a", "a11y_pattern_display_id": "A11Y-PAT-4649EBD8A951", "a11y_occurrence_fingerprint": "859a54b4cbb12b69b103d5c94a3aaa0e664fea44f1db4d024e97d33c9a92843b", "a11y_occurrence_display_id": "A11Y-OCC-859A54B4CBB1", "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm", "xpath": "td[width=\"100%\"][valign=\"top\"] > ol[type=\"1\"]", "html_snippet": "
    ", "wcag_sc": "1.3.1", "wcag_name": "Info and Relationships", "wcag_level": "A", "wcag_version": "2.0", "wcag_category": "WCAG 2.0 A", "evidence_status": "automated-indicator", "rule_id": "list", "rule_label": "
      and
        must only directly contain
      1. ,