{ "domain": "www.cdc.gov", "week": "2026-W28", "generatedAt": "2026-07-24T13:07:17.324Z", "reports": [ { "instance_id": "VS-60fa70e9", "pattern_id": "VS-179ad9b3", "a11y_pattern_fingerprint": "a85f7841d6d258839aa49175b3807f2b26f2d9c09aa5a9db308c9180f668c523", "a11y_pattern_display_id": "A11Y-PAT-A85F7841D6D2", "a11y_occurrence_fingerprint": "0de96262c6073e870c8d3d4ea06389934c7790489318cec6de35913c05ae4c6b", "a11y_occurrence_display_id": "A11Y-OCC-0DE96262C607", "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.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": 3643, "pages_affected": 338, "total_pages_scanned": 1967 }, "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 338 of 1967 scanned pages (3643 instances).", "examples": [ { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.htm", "xpath": "", "html_snippet": null }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.htm", "xpath": "", "html_snippet": null }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.htm", "xpath": "", "html_snippet": null }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5308a4.htm", "xpath": "", "html_snippet": null }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5308a4.htm", "xpath": "", "html_snippet": null } ], "example_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5308a4.htm", "https://www.cdc.gov/niosh/idlh/107028.html" ], "affected_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5308a4.htm", "https://www.cdc.gov/niosh/idlh/107028.html", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5915a3.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5614a3.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00050119.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056456.htm", "https://www.cdc.gov/nchs/hus/data-finder.htm?subject=HIV", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00032099.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00017358.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00021199.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/rr5405a1.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00017268.htm", "https://www.cdc.gov/nchs/hus/data-finder.htm?subject=Drug+overdose", "https://www.cdc.gov/niosh/ocas/anle.html", "https://www.cdc.gov/niosh/ocas/extrusionpl.html", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00001942.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00020497.htm", "https://www.cdc.gov/nhsn/faqs/faq_enrollment.html", "https://www.cdc.gov/pcd/issues/2010/jan/cover.htm", "https://www.cdc.gov/mmwr/preview/index84.html", "https://www.cdc.gov/niosh/ocas/ocasfaqs.html", "http://www.cdc.gov/mmwr/preview/index89.html", "http://www.cdc.gov/pcd/issues/2009/jan/07_0215_zht.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5740md.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/00000631.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-W28", "weeks_seen": 5, "affected_pages_csv": "csv/alfa__sia-r113.csv" }, { "instance_id": "VS-5695c2b6", "pattern_id": "VS-f7dba940", "a11y_pattern_fingerprint": "fb57289341627cbbf39016dc952a982e5ad5116b105c71da333977027afbcdb0", "a11y_pattern_display_id": "A11Y-PAT-FB5728934162", "a11y_occurrence_fingerprint": "6ee816449dbb64a0fab5df553345c4cd0537d339bb992e3d89da4330583b64c7", "a11y_occurrence_display_id": "A11Y-OCC-6EE816449DBB", "url": "https://www.cdc.gov/forecast-outbreak-analytics/impact/piloting-models-on-cdc-data-platforms-with-utah-health-officials.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": 135, "pages_affected": 86, "total_pages_scanned": 1967 }, "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 86 of 1967 scanned pages (135 instances).", "examples": [ { "url": "https://www.cdc.gov/forecast-outbreak-analytics/impact/piloting-models-on-cdc-data-platforms-with-utah-health-officials.html", "xpath": "", "html_snippet": null }, { "url": "https://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-122sp.html", "xpath": "", "html_snippet": null }, { "url": "https://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-122sp.html", "xpath": "", "html_snippet": null }, { "url": "https://www.cdc.gov/flu/es/highrisk/personas-con-mayor-riesgo.html", "xpath": "", "html_snippet": null }, { "url": "https://www.cdc.gov/flu/es/highrisk/personas-con-mayor-riesgo.html", "xpath": "", "html_snippet": null } ], "example_pages": [ "https://www.cdc.gov/forecast-outbreak-analytics/impact/piloting-models-on-cdc-data-platforms-with-utah-health-officials.html", "https://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-122sp.html", "https://www.cdc.gov/flu/es/highrisk/personas-con-mayor-riesgo.html" ], "affected_pages": [ "https://www.cdc.gov/forecast-outbreak-analytics/impact/piloting-models-on-cdc-data-platforms-with-utah-health-officials.html", "https://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-122sp.html", "https://www.cdc.gov/flu/es/highrisk/personas-con-mayor-riesgo.html", "http://www.cdc.gov/spanish/niosh/docs/2011-199_sp", "https://www.cdc.gov/vaginal-vulvar-cancers/es/risk-factors/index.html", "https://www.cdc.gov/tb/communication-resources/stop-tb-poster.html", "https://www.cdc.gov/healthy-aging-data/brfss", "https://www.cdc.gov/spanish/niosh/docs/2012-125_sp", "https://www.cdc.gov/natural-disasters/es/about/desastres-naturales-y-tiempo-severo-antes-durante-y-despues.html", "https://www.cdc.gov/vaccines/programs/vfc/index.html", "https://www.cdc.gov/overdose-prevention/data-research/facts-stats/sudors-dashboard-fatal-overdose-data-accessible.html", "http://www.cdc.gov/ehe/php/about/goals.html", "https://www.cdc.gov/chickenpox/es/treatment/como-tratar-la-varicela.html", "https://www.cdc.gov/hurricanes/es/php/preparedness-and-safety-messaging/mensajes-de-preparacion-y-seguridad-respecto-a-huracanes-inundaciones-y-desastres-similares.html", "https://www.cdc.gov/hpv/hcp/educational-resources/index.html", "https://www.cdc.gov/chagas/es/prevention/como-prevenir-la-enfermedad-de-chagas.html", "http://www.cdc.gov/nchhstp/about/atlasplus.html", "https://www.cdc.gov/tobacco/campaign/tips/spanish/historias/jessica.html", "http://www.cdc.gov/overdose-prevention/about/fentanyl.html", "https://www.cdc.gov/nceh/site.html", "https://www.cdc.gov/spanish/niosh/docs/video/2017-158d_sp/default.html", "https://www.cdc.gov/spanish/niosh/mining/pubs/pubreference/outputid1578_sp.html", "https://www.cdc.gov/lab-training/php/courses/lc-ms-biochemical-genetics-laboratory.html", "https://www.cdc.gov/tb/communication-resources/staying-on-track-with-tb-medicine-booklet.html", "https://www.cdc.gov/cancer/es/hpv/index.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 https://www.cdc.gov/forecast-outbreak-analytics/impact/piloting-models-on-cdc-data-platforms-with-utah-health-officials.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-W28", "weeks_seen": 5, "affected_pages_csv": "csv/alfa__sia-r14.csv" }, { "instance_id": "VS-d0c14f51", "pattern_id": "VS-9074b4dd", "a11y_pattern_fingerprint": "a63aeb2e943401209ab1a27548f4db2826919c02cf8213d2900e7cb35f61d431", "a11y_pattern_display_id": "A11Y-PAT-A63AEB2E9434", "a11y_occurrence_fingerprint": "ad19eecb59d6b670404d347aee6a88db17bd98efe7b4c8d36f2b381545652349", "a11y_occurrence_display_id": "A11Y-OCC-AD19EECB59D6", "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.htm", "xpath": "td[rowspan=\"2\"][width=\"10\"]:nth-child(1) > img[alt=\" \"][width=\"10\"][src$=\"spacer.gif\"]", "html_snippet": "\"", "wcag_sc": "1.1.1", "wcag_name": "Non-text Content", "wcag_level": "A", "wcag_version": "2.0", "wcag_category": "WCAG 2.0 A", "evidence_status": "automated-indicator", "rule_id": "image-alt", "rule_label": "Images must have alternative text", "engine_key": "axe-core", "tool": "axe-core", "rule_url": "https://dequeuniversity.com/rules/axe/4.12/image-alt?application=axeAPI", "severity": "Critical", "frequency": { "instances": 3587, "pages_affected": 400, "total_pages_scanned": 1967 }, "likely_source": "template", "summary": "Images must have alternative text (WCAG 1.1.1)", "description": "Images must have alternative text. Detected by axe-core rule image-alt on 400 of 1967 scanned pages (3587 instances).", "examples": [ { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.htm", "xpath": "td[rowspan=\"2\"][width=\"10\"]:nth-child(1) > img[alt=\" \"][width=\"10\"][src$=\"spacer.gif\"]", "html_snippet": "\"" }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.htm", "xpath": "img[height=\"10\"][alt=\" \"][src$=\"spacer.gif\"]", "html_snippet": "\"" }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.htm", "xpath": "td[rowspan=\"2\"][width=\"10\"]:nth-child(3) > img[alt=\" \"][width=\"10\"][src$=\"spacer.gif\"]", "html_snippet": "\"" }, { "url": "https://www.cdc.gov/pcd/issues/2005/nov/05_0082_es.htm", "xpath": "img[height=\"8\"][alt=\" \"][width=\"140\"]", "html_snippet": "\"" }, { "url": "https://www.cdc.gov/pcd/issues/2005/nov/05_0082_es.htm", "xpath": "img[height=\"63\"]", "html_snippet": "\"" } ], "example_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.htm", "https://www.cdc.gov/pcd/issues/2005/nov/05_0082_es.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5540a8.htm" ], "affected_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.htm", "https://www.cdc.gov/pcd/issues/2005/nov/05_0082_es.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5540a8.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00049725.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5308a4.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5614a3.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00050119.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4925md.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056456.htm", "http://www.cdc.gov/pcd/issues/2009/jan/07_0263_fr.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5326a7.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5201a1.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00032099.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00017358.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00021199.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/rr5405a1.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00017982.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00017268.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00001843.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00021015.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00001942.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4920md.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00020497.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5810a6.htm", "https://www.cdc.gov/pcd/issues/2010/jan/cover.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/00000631.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": null, "tech_remediation_tip": null, "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-W28", "weeks_seen": 5, "affected_pages_csv": "csv/axe-core__image-alt.csv" }, { "instance_id": "VS-394e6abc", "pattern_id": "VS-a24eaa8c", "a11y_pattern_fingerprint": "08fcf4104776325c4249523ea3a19eb9da7511b09ae3fe405e100fb8fe2dfcd4", "a11y_pattern_display_id": "A11Y-PAT-08FCF4104776", "a11y_occurrence_fingerprint": "b5af1fd35b15219cf745bc70837c80da72e49862fe7a2f2d0bf08ab5f7407718", "a11y_occurrence_display_id": "A11Y-OCC-B5AF1FD35B15", "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.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": 1681, "pages_affected": 201, "total_pages_scanned": 1967 }, "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 201 of 1967 scanned pages (1681 instances).", "examples": [ { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.htm", "xpath": "\"", "html_snippet": null }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.htm", "xpath": "\"", "html_snippet": null }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.htm", "xpath": "\"", "html_snippet": null }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5308a4.htm", "xpath": "\"", "html_snippet": null }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5308a4.htm", "xpath": "\"", "html_snippet": null } ], "example_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5308a4.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5614a3.htm" ], "affected_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000631.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5308a4.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5614a3.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00050119.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056456.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00032099.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00017358.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00021199.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/rr5405a1.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00017268.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00001942.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00020497.htm", "https://www.cdc.gov/pcd/issues/2010/jan/cover.htm", "http://www.cdc.gov/pcd/issues/2009/jan/07_0215_zht.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5740md.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5236a5.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000381.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5819a5.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5723a4.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5815a3.htm", "http://www.cdc.gov/pcd/issues/2005/nov/05_0082_zhs.htm", "http://www.cdc.gov/pcd/issues/2008/oct/07_0173_zhs.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5838a3.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00000345.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00020077.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/00000631.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", "possible_duplicate_of": "VS-d0c14f51", "possible_duplicate_pattern": "VS-9074b4dd", "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-W28", "weeks_seen": 5, "affected_pages_csv": "csv/alfa__sia-r2.csv" }, { "instance_id": "VS-dd05ed2d", "pattern_id": "VS-9429bb8d", "a11y_pattern_fingerprint": "9569b6ac72c12d031e8c4d3a5ab4b1faf1e2bd45cd80250196cbf5221ae19c87", "a11y_pattern_display_id": "A11Y-PAT-9569B6AC72C1", "a11y_occurrence_fingerprint": "bb71344e31ee5d52d3398e84016a9fa6e56714de9b03d63c74148798c24b4c08", "a11y_occurrence_display_id": "A11Y-OCC-BB71344E31EE", "url": "https://www.cdc.gov/dpdx/diagnosticprocedures/stool/morphcomp.html", "xpath": "div[role=\"tablist\"]:nth-child(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": "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": 1967 }, "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 1967 scanned pages (2 instances).", "examples": [ { "url": "https://www.cdc.gov/dpdx/diagnosticprocedures/stool/morphcomp.html", "xpath": "div[role=\"tablist\"]:nth-child(1)", "html_snippet": "
" }, { "url": "https://www.cdc.gov/dpdx/diagnosticprocedures/stool/morphcomp.html", "xpath": "div[role=\"tablist\"]:nth-child(4)", "html_snippet": "
" } ], "example_pages": [ "https://www.cdc.gov/dpdx/diagnosticprocedures/stool/morphcomp.html" ], "affected_pages": [ "https://www.cdc.gov/dpdx/diagnosticprocedures/stool/morphcomp.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/diagnosticprocedures/stool/morphcomp.html.", "Locate the element: div[role=\"tablist\"]:nth-child(1)", "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-W28", "weeks_seen": 4, "affected_pages_csv": "csv/axe-core__aria-required-children.csv" }, { "instance_id": "VS-62c1d671", "pattern_id": "VS-a0bdbdf6", "a11y_pattern_fingerprint": "16dc632aeac0c7a43122906e8372dfdc7af4fe563901c65d12eb911a35aa6c66", "a11y_pattern_display_id": "A11Y-PAT-16DC632AEAC0", "a11y_occurrence_fingerprint": "3eab0bc28e013cf4ee3a6384a579116c3651386d2fd9ce0f95e2d71fbce7c902", "a11y_occurrence_display_id": "A11Y-OCC-3EAB0BC28E01", "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00017358.htm", "xpath": "ol", "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. ,