{ "domain": "www.cdc.gov", "week": "2026-W33", "generatedAt": "2026-08-14T13:59:19.547Z", "reports": [ { "instance_id": "VS-2c74fca8", "pattern_id": "VS-179ad9b3", "a11y_pattern_fingerprint": "a85f7841d6d258839aa49175b3807f2b26f2d9c09aa5a9db308c9180f668c523", "a11y_pattern_display_id": "A11Y-PAT-A85F7841D6D2", "a11y_occurrence_fingerprint": "c792323b2f650c6d69dcef7145a8753e9dde13949eff0d5c00fe7e667a0e5d11", "a11y_occurrence_display_id": "A11Y-OCC-C792323B2F65", "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.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": 2641, "pages_affected": 265, "total_pages_scanned": 3332 }, "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 265 of 3332 scanned pages (2641 instances).", "examples": [ { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.htm", "xpath": "", "html_snippet": null }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.htm", "xpath": "", "html_snippet": null }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.htm", "xpath": "", "html_snippet": null }, { "url": "http://www.cdc.gov/pcd/issues/2006/oct/05_0243_zht.htm", "xpath": "", "html_snippet": null }, { "url": "http://www.cdc.gov/pcd/issues/2006/oct/05_0243_zht.htm", "xpath": "", "html_snippet": null } ], "example_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.htm", "http://www.cdc.gov/pcd/issues/2006/oct/05_0243_zht.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5804a6.htm" ], "affected_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.htm", "http://www.cdc.gov/pcd/issues/2006/oct/05_0243_zht.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5804a6.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4924a2.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6128a2.htm?s_cid=mm6128a2_w", "http://www.cdc.gov/tobacco/campaign/tips/spanish/dejar-fumar/medicamentos/que-medicamento-es-adecuado-para-usted/con-medicina.html", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6317a2.htm?s_cid=mm6317a2_w", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00016764.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00001803.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4831a3.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4945a4.htm", "http://www.cdc.gov/pcd/issues/2006/jan/05_0109_zht.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00001362.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00056970.htm", "http://www.cdc.gov/pcd/issues/2011/sep/10_0286.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00001789.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6418a8.htm?s_cid=mm6418a8_w", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00048551.htm", "https://www.cdc.gov/pcd/issues/2005/nov/05_0067_es.htm", "http://www.cdc.gov/pcd/issues/2011/nov/11_0006_es.htm", "http://www.cdc.gov/pcd/issues/2005/apr/04_0063.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00001372.htm", "https://www.cdc.gov/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10514", "https://www.cdc.gov/globalhealth", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5024md.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/00056669.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-W33", "weeks_seen": 10, "affected_pages_csv": "csv/alfa__sia-r113.csv" }, { "instance_id": "VS-9524fa70", "pattern_id": "VS-f7dba940", "a11y_pattern_fingerprint": "0a27bb357b9ecd0d7c4021b11ced51c93012116b8296097b825b59f3c7611d0b", "a11y_pattern_display_id": "A11Y-PAT-0A27BB357B9E", "a11y_occurrence_fingerprint": "eba29282543b66fd33fb1ee1ad4c53b4e7d953969f1969209291163b3f854661", "a11y_occurrence_display_id": "A11Y-OCC-EBA29282543B", "url": "http://www.cdc.gov/drink-less-be-your-best/facts-about-excessive-drinking/index.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": 221, "pages_affected": 93, "total_pages_scanned": 3332 }, "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 93 of 3332 scanned pages (221 instances).", "examples": [ { "url": "http://www.cdc.gov/drink-less-be-your-best/facts-about-excessive-drinking/index.html", "xpath": "", "html_snippet": null }, { "url": "http://www.cdc.gov/tobacco/campaign/tips/spanish/dejar-fumar/medicamentos/que-medicamento-es-adecuado-para-usted/con-medicina.html", "xpath": "", "html_snippet": null }, { "url": "http://www.cdc.gov/fasd/es/about/acerca-de-los-trastornos-del-espectro-alcoholico-fetal-fasd.html", "xpath": "", "html_snippet": null }, { "url": "http://www.cdc.gov/fasd/es/about/acerca-de-los-trastornos-del-espectro-alcoholico-fetal-fasd.html", "xpath": "", "html_snippet": null }, { "url": "https://www.cdc.gov/niosh/publications/es/numbered/2012-116sp.html", "xpath": "", "html_snippet": null } ], "example_pages": [ "http://www.cdc.gov/drink-less-be-your-best/facts-about-excessive-drinking/index.html", "http://www.cdc.gov/tobacco/campaign/tips/spanish/dejar-fumar/medicamentos/que-medicamento-es-adecuado-para-usted/con-medicina.html", "http://www.cdc.gov/fasd/es/about/acerca-de-los-trastornos-del-espectro-alcoholico-fetal-fasd.html" ], "affected_pages": [ "http://www.cdc.gov/drink-less-be-your-best/facts-about-excessive-drinking/index.html", "http://www.cdc.gov/tobacco/campaign/tips/spanish/dejar-fumar/medicamentos/que-medicamento-es-adecuado-para-usted/con-medicina.html", "http://www.cdc.gov/fasd/es/about/acerca-de-los-trastornos-del-espectro-alcoholico-fetal-fasd.html", "https://www.cdc.gov/niosh/publications/es/numbered/2012-116sp.html", "https://www.cdc.gov/sti/php/sti-program-resources/outbreak-preparedness-detection-and-response.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/listeria/outbreaks/map-deli-meat-and-cheese-11-22.html", "https://www.cdc.gov/group-a-strep/es/about/acerca-de-las-infecciones-por-estreptococos-del-grupo-a.html", "http://www.cdc.gov/antimicrobial-resistance-laboratory-networks/php/about/global.html", "https://www.cdc.gov/dnpao-data-trends-maps/publications", "https://www.cdc.gov/forecast-outbreak-analytics/site.html", "http://www.cdc.gov/NCHSTP/OD/tuskegee/clintonp.htm", "https://www.cdc.gov/bird-flu/video-series/symptoms-h5n1-spanish.html", "https://www.cdc.gov/vibrio/php/surveillance/annual-summary-2024.html", "https://www.cdc.gov/birth-defects/es/about/atresia-esofagica.html", "https://www.cdc.gov/tb/es/treatment/la-enfermedad-de-tuberculosis-activa.html", "http://www.cdc.gov/antimicrobial-resistance/communication-resources/index.html", "https://www.cdc.gov/rdc/b5aprovproj/ap540.htm", "https://www.cdc.gov/nchhstp/director-letters/extencilline-during-bicillin-l-a-shortage.html", "https://www.cdc.gov/niosh/publications/es/numbered/2013-146sp.html", "http://www.cdc.gov/nceh/priorities/index.html", "http://www.cdc.gov/national-program-cancer-registries/data-modernization/natural-language-processing.html", "https://www.cdc.gov/diabetes/spanish/resources/features/manage-diabetes-at-school.html", "https://www.cdc.gov/hepatitis-surveillance-2022/hepatitis-a/figure-1-7.html", "http://www.cdc.gov/media/es/releases/2026/la-lechuga-iceberg-picada-servida-en-establecimientos-de-taco-bell-es-la-fuente-de-infecciones-por.html", "https://www.cdc.gov/diabetes/php/toolkits/new-beginnings-modules.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/drink-less-be-your-best/facts-about-excessive-drinking/index.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-W33", "weeks_seen": 10, "affected_pages_csv": "csv/alfa__sia-r14.csv" }, { "instance_id": "VS-39c656a3", "pattern_id": "VS-9074b4dd", "a11y_pattern_fingerprint": "a63aeb2e943401209ab1a27548f4db2826919c02cf8213d2900e7cb35f61d431", "a11y_pattern_display_id": "A11Y-PAT-A63AEB2E9434", "a11y_occurrence_fingerprint": "056577c147b99dbcab10cd69ce4644bc6154fd4ea8a2dffd92005b99fcc11914", "a11y_occurrence_display_id": "A11Y-OCC-056577C147B9", "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.htm", "xpath": "td[rowspan=\"2\"][width=\"10\"]:nth-child(1) > img[alt=\" \"][width=\"10\"][src$=\"spacer.gif\"]", "html_snippet": "\"", "wcag_sc": "1.1.1", "wcag_name": "Non-text Content", "wcag_level": "A", "wcag_version": "2.0", "wcag_category": "WCAG 2.0 A", "evidence_status": "automated-indicator", "rule_id": "image-alt", "rule_label": "Images must have alternative text", "engine_key": "axe-core", "tool": "axe-core", "rule_url": "https://dequeuniversity.com/rules/axe/4.12/image-alt?application=axeAPI", "severity": "Critical", "frequency": { "instances": 5979, "pages_affected": 528, "total_pages_scanned": 3332 }, "likely_source": "template", "summary": "Images must have alternative text (WCAG 1.1.1)", "description": "Images must have alternative text. Detected by axe-core rule image-alt on 528 of 3332 scanned pages (5979 instances).", "examples": [ { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.htm", "xpath": "td[rowspan=\"2\"][width=\"10\"]:nth-child(1) > img[alt=\" \"][width=\"10\"][src$=\"spacer.gif\"]", "html_snippet": "\"" }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.htm", "xpath": "img[height=\"10\"][alt=\" \"][src$=\"spacer.gif\"]", "html_snippet": "\"" }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.htm", "xpath": "td[rowspan=\"2\"][width=\"10\"]:nth-child(3) > img[alt=\" \"][width=\"10\"][src$=\"spacer.gif\"]", "html_snippet": "\"" }, { "url": "http://www.cdc.gov/pcd/issues/2006/oct/05_0243_zht.htm", "xpath": "img[height=\"8\"][alt=\" \"][width=\"140\"]", "html_snippet": "\"" }, { "url": "http://www.cdc.gov/pcd/issues/2006/oct/05_0243_zht.htm", "xpath": "img[height=\"63\"]", "html_snippet": "\"" } ], "example_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.htm", "http://www.cdc.gov/pcd/issues/2006/oct/05_0243_zht.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5804a6.htm" ], "affected_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.htm", "http://www.cdc.gov/pcd/issues/2006/oct/05_0243_zht.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5804a6.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5128a3.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5021a4.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4924a2.htm", "https://www.cdc.gov/pcd/issues/2011/mar/10_0056_es.htm", "https://www.cdc.gov/pcd/issues/2009/apr/08_0083.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00017507.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5048a2.htm", "https://www.cdc.gov/mmwr/volumes/65/wr/mm6509a2.htm?s_cid=mm6509a2_w", "https://www.cdc.gov/pcd/issues/2008/apr/07_0108_zht.htm", "http://www.cdc.gov/pcd/issues/2008/oct/07_0170.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00016764.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00001803.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00001849.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4831a3.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5824a1.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4945a4.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5721md.htm", "http://www.cdc.gov/pcd/issues/2011/may/10_0025_es.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00015773.htm", "http://www.cdc.gov/pcd/issues/2008/jan/06_0122_zhs.htm", "http://www.cdc.gov/pcd/issues/2006/jan/05_0109_zht.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5808a3.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/00056669.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-W33", "weeks_seen": 10, "affected_pages_csv": "csv/axe-core__image-alt.csv" }, { "instance_id": "VS-a65ee0ad", "pattern_id": "VS-a24eaa8c", "a11y_pattern_fingerprint": "08fcf4104776325c4249523ea3a19eb9da7511b09ae3fe405e100fb8fe2dfcd4", "a11y_pattern_display_id": "A11Y-PAT-08FCF4104776", "a11y_occurrence_fingerprint": "f30bcd38dbcbfb0953561562c38f23953355b341ebe7d9a860e2689cea1606ec", "a11y_occurrence_display_id": "A11Y-OCC-F30BCD38DBCB", "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.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": 1744, "pages_affected": 149, "total_pages_scanned": 3332 }, "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 149 of 3332 scanned pages (1744 instances).", "examples": [ { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.htm", "xpath": "\"", "html_snippet": null }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.htm", "xpath": "\"", "html_snippet": null }, { "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.htm", "xpath": "\"", "html_snippet": null }, { "url": "http://www.cdc.gov/pcd/issues/2006/oct/05_0243_zht.htm", "xpath": "\"", "html_snippet": null }, { "url": "http://www.cdc.gov/pcd/issues/2006/oct/05_0243_zht.htm", "xpath": "\"", "html_snippet": null } ], "example_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.htm", "http://www.cdc.gov/pcd/issues/2006/oct/05_0243_zht.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5804a6.htm" ], "affected_pages": [ "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056669.htm", "http://www.cdc.gov/pcd/issues/2006/oct/05_0243_zht.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5804a6.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4924a2.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00016764.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00001803.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4831a3.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4945a4.htm", "http://www.cdc.gov/pcd/issues/2006/jan/05_0109_zht.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00001362.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00056970.htm", "http://www.cdc.gov/pcd/issues/2011/sep/10_0286.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00001789.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00048551.htm", "https://www.cdc.gov/pcd/issues/2005/nov/05_0067_es.htm", "http://www.cdc.gov/pcd/issues/2011/nov/11_0006_es.htm", "http://www.cdc.gov/pcd/issues/2005/apr/04_0063.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00001372.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5024md.htm", "http://www.cdc.gov/mmwr/preview/mmwrhtml/00055154.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00054266.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5823a3.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5833a5.htm", "https://www.cdc.gov/mmwr/preview/mmwrhtml/00056589.htm", "https://www.cdc.gov/mmwr/volumes/65/wr/mm6504md.htm?s_cid=mm6504md_w" ], "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/00056669.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-W33", "weeks_seen": 10, "affected_pages_csv": "csv/alfa__sia-r2.csv" }, { "instance_id": "VS-bca3f9e5", "pattern_id": "VS-f6d344d5", "a11y_pattern_fingerprint": "566427566b4d7e31e21a4708c0ce163ee743d5ee2a49c21116d96ff83fc85dda", "a11y_pattern_display_id": "A11Y-PAT-566427566B4D", "a11y_occurrence_fingerprint": "73d8f2a2078b77b1efd5438595dc9335f887fa70329093ae0b53b263ea40c492", "a11y_occurrence_display_id": "A11Y-OCC-73D8F2A2078B", "url": "https://www.cdc.gov/iis/2d-barcodes/implementation-toolkit.html", "xpath": "div[role=\"rowgroup\"]", "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-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": 1, "pages_affected": 1, "total_pages_scanned": 3332 }, "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 3332 scanned pages (1 instances).", "examples": [ { "url": "https://www.cdc.gov/iis/2d-barcodes/implementation-toolkit.html", "xpath": "div[role=\"rowgroup\"]", "html_snippet": "
" } ], "example_pages": [ "https://www.cdc.gov/iis/2d-barcodes/implementation-toolkit.html" ], "affected_pages": [ "https://www.cdc.gov/iis/2d-barcodes/implementation-toolkit.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/iis/2d-barcodes/implementation-toolkit.html.", "Locate the element: div[role=\"rowgroup\"]", "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-W33", "weeks_seen": 4, "affected_pages_csv": "csv/axe-core__aria-required-parent.csv" }, { "instance_id": "VS-c1979758", "pattern_id": "VS-a0bdbdf6", "a11y_pattern_fingerprint": "fb2e44a0b3ea53a65d21ae86f76bad4a99f4bc3f517bfa767805020831d7bc02", "a11y_pattern_display_id": "A11Y-PAT-FB2E44A0B3EA", "a11y_occurrence_fingerprint": "36fb79ac47e39412131ee2d11aa57cdbc8d34abb5690492499f914c1dd2bfd1c", "a11y_occurrence_display_id": "A11Y-OCC-36FB79AC47E3", "url": "https://www.cdc.gov/mmwr/preview/mmwrhtml/00001662.htm", "xpath": "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. ,