vital-scans open quality ledger

www.cdc.gov: Accessibility — week 2026-W35

Automated Accessibility Conformance Report (OpenACR): Download ACR. Machine-readable; compatible with GSA OpenACR tooling. Automated tools find ~⅓ of real barriers — supplement with manual AT testing.

Training priorities

Top WCAG success criteria by pages affected this week. Use these to focus team training on the highest-impact issues.

SCCriterionPagesRulesNotes
1.4.3 Contrast (Minimum) 482 2
1.1.1 Non-text Content (images, icons) 468 2
3.1.1 Language of Page 453 2
2.5.5 WCAG 2.5.5 442 1
1.4.6 WCAG 1.4.6 381 1

Next 10 actions

Clusters are fingerprinted by normalized selector path + rule id + snippet shape. Rank score = (severity weight × pages affected) / distinct components for the rule. This supersedes the template threshold heuristic while still surfacing it as a validation signal.

Top 10 clustered component fixes for this week.
ClusterSeverityPagesWho it affectsHow to fixEvidenceDecision
<html> element must have a lang attribute · unattributed component
Fix one place, resolve ~355 finding(s) on 355 page(s).
XPath / selector: html
<html>
 Serious 355 Without vision, Limited cognitive, language, or learning ability Add a lang attribute to <html> (e.g. lang="en"). pages (CSV)
Form elements should have a visible label · unattributed component
Fix one place, resolve ~109 finding(s) on 109 page(s).
XPath / selector: .smallfield
<input class="smallfield" type="text" name="email" size="15" title="Insertar e-mail" value="Insertar e-mail" onfocus="this.value=''">
 Serious 109 Requires manual testing. See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/label-title-only?application=axeAPI pages (CSV)
Document should have one main landmark · unattributed component
Fix one place, resolve ~390 finding(s) on 390 page(s).
XPath / selector: html
<html>
 Moderate 390 Requires manual testing. Each page should have exactly one <main> landmark. pages (CSV)
Document has a valid lang attribute · unattributed component
Fix one place, resolve ~98 finding(s) on 98 page(s).
XPath / selector: <html>
 Moderate 98 Without vision, Limited cognitive, language, or learning ability Add a valid lang attribute to <html>. pages (CSV)
Form elements must have labels · unattributed component
Fix one place, resolve ~91 finding(s) on 91 page(s).
XPath / selector: #searchBox
<input id="searchBox" class="searchBox" name="query" maxlength="256" type="text" style="width: 230px;">
 Critical 91 Without vision, Limited vision, Limited manipulation/strength Associate every form control with a <label> (via for/id) or an aria-label/aria-labelledby. pages (CSV)
Page should contain a level-one heading · unattributed component
Fix one place, resolve ~52 finding(s) on 52 page(s).
XPath / selector: html
<html lang="en-us" class="cdc-theme-cdc cdc-page-type--home" style="--mobile-header-offset: 0px;">
 Moderate 52 Requires manual testing. See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/page-has-heading-one?application=axeAPI pages (CSV)
Landmarks should have a unique role or role/label/title (i.e. accessible name) c · unattributed component
Fix one place, resolve ~452 finding(s) on 452 page(s).
XPath / selector: .page-right-rail__static
<aside class="page-right-rail__static noindex" role="complementary" style="margin-top: 47px;">
 Moderate 452 Requires manual testing. 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. pages (CSV)
Document should have one main landmark · unattributed component
Fix one place, resolve ~90 finding(s) on 90 page(s).
XPath / selector: #js
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" id="js">
 Moderate 90 Requires manual testing. Each page should have exactly one <main> landmark. pages (CSV)
Images must have alternative text · unattributed component
Fix one place, resolve ~247 finding(s) on 247 page(s).
XPath / selector: img[height="10"][alt=" "][src$="spacer.gif"]
<img src="../../images/spacer.gif" width="1" height="10" alt=" " border="0">
 Critical 247 Without vision, Limited vision, Limited cognitive, language, or learning ability Give every <img> a meaningful alt attribute. Use alt="" only for decorative images so screen readers skip them. pages (CSV)
Images must have alternative text · unattributed component
Fix one place, resolve ~486 finding(s) on 244 page(s).
XPath / selector: td[rowspan="2"][width="10"]:nth-child(1) > img[alt=" "][width="10"][src$="spacer.gif"]
<img src="../../images/spacer.gif" width="10" height="1" alt=" " border="0">
 Critical 244 Without vision, Limited vision, Limited cognitive, language, or learning ability Give every <img> a meaningful alt attribute. Use alt="" only for decorative images so screen readers skip them. pages (CSV)

Bug reports

32 issue type(s) are shown by default out of 69 total. Prioritized by severity, key pages, WCAG level, and prevalence; use the toggle to show everything.

Overall severity mix: 5 critical, 19 serious, 41 moderate, 4 minor. By WCAG category: 31 WCAG 2.0 A, 2 WCAG 2.0 AA, 1 WCAG 2.1 A, 1 WCAG 2.2 AA, 5 WCAG 2.x AAA, 13 Best Practice, 16 Undetermined. Ordered by severity, key-page impact, WCAG level, and prevalence. Following accessibility bug-reporting best practices. Download: Markdown · JSON (full archive) · JSON (AI diagnostic) · CSV (all findings) · Priority pages CSV · Priority pages JSON.

Automated testing does not establish full WCAG conformance. Findings in the verification lane require manual testing before they are treated as confirmed failures.

The 50 highest-priority findings are shown in full; 19 more lower-priority finding(s) are summarised at the end of the page, and every finding is in the CSV/JSON downloads.

4 finding(s) marked "possible duplicate" — Alfa and axe-core both flagged the same WCAG SC on overlapping pages. If they target the same element, the axe-core report is authoritative. Filter the CSV by possible_duplicate_of to see these. Two engines flagging the same barrier reduces the chance of a false positive.

Findings needing review

These findings need manual verification before they can be treated as confirmed failures. Obligation remains visible for each finding.

Critical axe image-alt WCAG 2.0 A Images must have alternative text (WCAG 1.1.1) 366/1902 pages · 4317 instances Likely template
Bug ID
VS-650e9314
Pattern ID
VS-9074b4dd
Combined ID
VS-650e9314 (pattern VS-9074b4dd) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
1.1.1 Non-text Content (Level A, WCAG 2.0)
XPath / selector
td[rowspan="2"][width="10"]:nth-child(1) > img[alt=" "][width="10"][src$="spacer.gif"]
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<img src="../../images/spacer.gif" width="10" height="1" alt=" " border="0">

Description

Images must have alternative text. Detected by axe-core rule image-alt on 366 of 1902 scanned pages (4317 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.htm.
  2. Locate the element: td[rowspan="2"][width="10"]:nth-child(1) > img[alt=" "][width="10"][src$="spacer.gif"]
  3. Confirm the axe-core finding for rule image-alt against WCAG 1.1.1 Non-text Content.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited cognitive, language, or learning ability — 11.0% of population

Affected pages

…and more — all 366 pages (CSV).

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Give every <img> a meaningful alt attribute. Use alt="" only for decorative images so screen readers skip them.

Drupal 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.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/image-alt?application=axeAPI

Serious axe html-has-lang WCAG 2.0 A <html> element must have a lang attribute (WCAG 3.1.1) 355/1902 pages · 355 instances Likely template
Bug ID
VS-1d6d8963
Pattern ID
VS-c126b6a6
Combined ID
VS-1d6d8963 (pattern VS-c126b6a6) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
3.1.1 Language of Page (Level A, WCAG 2.0)
XPath / selector
html
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<html>

Description

<html> element must have a lang attribute. Detected by axe-core rule html-has-lang on 355 of 1902 scanned pages (355 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.htm.
  2. Locate the element: html
  3. Confirm the axe-core finding for rule html-has-lang against WCAG 3.1.1 Language of Page.

Impact

Affects Without vision (1.0%), Limited cognitive, language, or learning ability (11.0%).

  • Without vision — 1.0% of population
  • Limited cognitive, language, or learning ability — 11.0% of population

Affected pages

…and more — all 355 pages (CSV).

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Add a lang attribute to <html> (e.g. lang="en").

Drupal tip: Drupal sets the page lang attribute from Admin › Configuration › Regional and Language › Languages. Ensure the default language is configured.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/html-has-lang?application=axeAPI

Serious axe color-contrast WCAG 2.0 AA Elements must meet minimum color contrast ratio thresholds (WCAG 1.4.3) 341/1902 pages · 504 instances Likely template
Bug ID
VS-28fd25c1
Pattern ID
VS-be8d563e
Combined ID
VS-28fd25c1 (pattern VS-be8d563e) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 AA
Obligation
required
Handling
review
WCAG SC
1.4.3 Contrast (Minimum) (Level AA, WCAG 2.0)
XPath / selector
font[color="red"]
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<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: <a href="mailto:mmwrq@cdc.gov">mmwrq@cdc.gov</a>

Description

Elements must meet minimum color contrast ratio thresholds. Detected by axe-core rule color-contrast on 341 of 1902 scanned pages (504 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.htm.
  2. Locate the element: font[color="red"]
  3. Confirm the axe-core finding for rule color-contrast against WCAG 1.4.3 Contrast (Minimum).

Impact

Affects Limited vision (2.4%), Without color perception (4.5%).

  • Limited vision — 2.4% of population
  • Without color perception — 4.5% of population

Affected pages

…and more — all 341 pages (CSV).

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: 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.

Drupal tip: Check your Drupal theme's base CSS. Themes like Olivero and Bartik have contrast issues in default color schemes — override failing color pairs in your subtheme's style.css.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/color-contrast?application=axeAPI

Serious axe link-name WCAG 2.0 A Links must have discernible text (WCAG 2.4.4) 161/1902 pages · 469 instances Likely template
Bug ID
VS-c4b3e603
Pattern ID
VS-e9fe47ac
Combined ID
VS-c4b3e603 (pattern VS-e9fe47ac) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
2.4.4 Link Purpose (In Context) (Level A, WCAG 2.0)
XPath / selector
a[href$="email.do"]
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<a href="http://www.cdc.gov/email.do" onclick="openRequestedPopup(); return false;" class="noLinking">&nbsp;</a>

Description

Links must have discernible text. Detected by axe-core rule link-name on 161 of 1902 scanned pages (469 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/pcd/issues/2012/11_0249_es.htm.
  2. Locate the element: a[href$="email.do"]
  3. Confirm the axe-core finding for rule link-name against WCAG 2.4.4 Link Purpose (In Context).

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited cognitive, language, or learning ability — 11.0% of population

Affected pages

…and more — all 161 pages (CSV).

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Give the link discernible text. Avoid empty links and icon-only links without an aria-label.

Drupal tip: "Read more" links from Drupal Views should use the "Link text" rewrite field to add context, or add aria-label via the Views rewrite output.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/link-name?application=axeAPI

Critical axe label WCAG 2.0 A Form elements must have labels (WCAG 4.1.2) 96/1902 pages · 113 instances Likely template
Bug ID
VS-997575fe
Pattern ID
VS-fafffee0
Combined ID
VS-997575fe (pattern VS-fafffee0) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
4.1.2 Name, Role, Value (Level A, WCAG 2.0)
XPath / selector
#searchBox
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<input id="searchBox" class="searchBox" name="query" maxlength="256" type="text" style="width: 230px;">

Description

Form elements must have labels. Detected by axe-core rule label on 96 of 1902 scanned pages (113 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w.
  2. Locate the element: #searchBox
  3. Confirm the axe-core finding for rule label against WCAG 4.1.2 Name, Role, Value.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited manipulation/strength — 13.0% of population

Affected pages

…and more — all 96 pages (CSV).

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Associate every form control with a <label> (via for/id) or an aria-label/aria-labelledby.

Drupal tip: Use Drupal's form element "Label" setting. In Webform, every element has a Label field — ensure it's not empty or hidden. Check that twig templates don't strip <label> elements from form fields.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/label?application=axeAPI

Serious axe link-in-text-block WCAG 2.0 A Links must be distinguishable without relying on color (WCAG 1.4.1) 24/1902 pages · 24 instances Likely template
Bug ID
VS-2ed0abc6
Pattern ID
VS-8ade3360
Combined ID
VS-2ed0abc6 (pattern VS-8ade3360) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
1.4.1 Use of Color (Level A, WCAG 2.0)
XPath / selector
.all-pages
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<a class="all-pages" href="#toc">All pages <span class="cdc-fa-arrow-down-long"></span></a>

Description

Links must be distinguishable without relying on color. Detected by axe-core rule link-in-text-block on 24 of 1902 scanned pages (24 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/infection-control/hcp/healthcare-personnel-infrastructure-routine-practices/authors.html.
  2. Locate the element: .all-pages
  3. Confirm the axe-core finding for rule link-in-text-block against WCAG 1.4.1 Use of Color.

Impact

Affects Without color perception (4.5%), Limited vision (2.4%).

  • Without color perception — 4.5% of population
  • Limited vision — 2.4% of population

Affected pages

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/link-in-text-block?application=axeAPI

Serious axe list WCAG 2.0 A <ul> and <ol> must only directly contain <li>, <script> or <template> elements (WCAG 1.3.1) 21/1902 pages · 37 instances Likely template
Bug ID
VS-14e3b99e
Pattern ID
VS-a0bdbdf6
Combined ID
VS-14e3b99e (pattern VS-a0bdbdf6) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
1.3.1 Info and Relationships (Level A, WCAG 2.0)
XPath / selector
ol
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<ol type="1">

Description

<ul> and <ol> must only directly contain <li>, <script> or <template> elements. Detected by axe-core rule list on 21 of 1902 scanned pages (37 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/mmwr/preview/mmwrhtml/00032890.htm.
  2. Locate the element: ol
  3. Confirm the axe-core finding for rule list against WCAG 1.3.1 Info and Relationships.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited cognitive, language, or learning ability — 11.0% of population

Affected pages

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Use <ul>/<ol> with only <li> children for lists; don't fake lists with <div>s.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/list?application=axeAPI

Serious axe scrollable-region-focusable WCAG 2.0 A Scrollable region must have keyboard access (WCAG 2.1.1) 21/1902 pages · 32 instances Likely template
Bug ID
VS-6f1518a5
Pattern ID
VS-c613c153
Combined ID
VS-6f1518a5 (pattern VS-c613c153) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
2.1.1 Keyboard (Level A, WCAG 2.0)
XPath / selector
.dfe-block.dfe-block--cdcmodule:nth-child(19) > .cdc-textblock > .table-responsive > div
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<div style="overflow-x: auto;">

Description

Scrollable region must have keyboard access. Detected by axe-core rule scrollable-region-focusable on 21 of 1902 scanned pages (32 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/infection-control/hcp/environmental-control/environmental-sampling.html.
  2. Locate the element: .dfe-block.dfe-block--cdcmodule:nth-child(19) > .cdc-textblock > .table-responsive > div
  3. Confirm the axe-core finding for rule scrollable-region-focusable against WCAG 2.1.1 Keyboard.

Impact

Affects Without vision (1.0%), Limited manipulation/strength (13.0%), Limited reach (2.0%).

  • Without vision — 1.0% of population
  • Limited manipulation/strength — 13.0% of population
  • Limited reach — 2.0% of population

Affected pages

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Make scrollable regions keyboard-focusable (tabindex="0") so keyboard users can scroll them.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/scrollable-region-focusable?application=axeAPI

Serious axe frame-title WCAG 2.0 A Frames must have an accessible name (WCAG 4.1.2) 13/1902 pages · 41 instances Likely template
Bug ID
VS-9ed8c31e
Pattern ID
VS-3f76c7ea
Combined ID
VS-9ed8c31e (pattern VS-3f76c7ea) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
4.1.2 Name, Role, Value (Level A, WCAG 2.0)
XPath / selector
iframe
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<iframe src="//www.youtube-nocookie.com/embed/0PwuL6k8byY?autohide=0&enablejsapi=1&modestbranding=1&rel=0&origin=https://www.cdc.gov?autohide=0&enablejsapi=1&modestbranding=1&rel=0&origin=https://www.

Description

Frames must have an accessible name. Detected by axe-core rule frame-title on 13 of 1902 scanned pages (41 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/cancer/es/prevention/healthy-choices.html.
  2. Locate the element: iframe
  3. Confirm the axe-core finding for rule frame-title against WCAG 4.1.2 Name, Role, Value.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited manipulation/strength — 13.0% of population

Affected pages

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Give every <iframe> a descriptive title attribute.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/frame-title?application=axeAPI

Serious axe td-headers-attr WCAG 2.0 A Table cell headers attributes must refer to other <th> elements in the same tabl (WCAG 1.3.1) 8/1902 pages · 10 instances
Bug ID
VS-4a1bd0c7
Pattern ID
VS-07ba3b17
Combined ID
VS-4a1bd0c7 (pattern VS-07ba3b17) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
1.3.1 Info and Relationships (Level A, WCAG 2.0)
XPath / selector
table
History
first seen 2026-W25, last seen 2026-W35 (11 wk)

HTML snippet — use this to validate the finding without re-running the tool

<table align="center" border="1" cellpadding="7" cellspacing="0" class="opt-in table table-bordered">

Description

Table cell headers attributes must refer to other <th> elements in the same tabl. Detected by axe-core rule td-headers-attr on 8 of 1902 scanned pages (10 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table4a_LLCP.html.
  2. Locate the element: table
  3. Confirm the axe-core finding for rule td-headers-attr against WCAG 1.3.1 Info and Relationships.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited cognitive, language, or learning ability — 11.0% of population

Affected pages

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Associate data cells with their headers correctly using headers/id or scope.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/td-headers-attr?application=axeAPI

Serious axe nested-interactive WCAG 2.0 A Interactive controls must not be nested (WCAG 4.1.2) 6/1902 pages · 13 instances
Bug ID
VS-28efe6cd
Pattern ID
VS-58301a87
Combined ID
VS-28efe6cd (pattern VS-58301a87) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
4.1.2 Name, Role, Value (Level A, WCAG 2.0)
XPath / selector
button[aria-controls="accordion-panel-6xwykPNSWZ"]
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<button aria-controls="accordion-panel-6xwykPNSWZ" aria-expanded="false" class="accordion-button collapsed" data-bs-target="#accordion-panel-6xwykPNSWZ" data-bs-toggle="collapse" type="button">

Description

Interactive controls must not be nested. Detected by axe-core rule nested-interactive on 6 of 1902 scanned pages (13 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/hivpartners/php/riskandprevention/index.html.
  2. Locate the element: button[aria-controls="accordion-panel-6xwykPNSWZ"]
  3. Confirm the axe-core finding for rule nested-interactive against WCAG 4.1.2 Name, Role, Value.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited manipulation/strength — 13.0% of population

Affected pages

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Don't nest interactive controls (e.g. a button inside a link); split them apart.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/nested-interactive?application=axeAPI

Critical axe select-name WCAG 2.0 A Select element must have an accessible name (WCAG 4.1.2) 4/1902 pages · 4 instances
Bug ID
VS-c999cbff
Pattern ID
VS-fab92378
Combined ID
VS-c999cbff (pattern VS-fab92378) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
4.1.2 Name, Role, Value (Level A, WCAG 2.0)
XPath / selector
select
History
first seen 2026-W25, last seen 2026-W35 (11 wk)

HTML snippet — use this to validate the finding without re-running the tool

<select onchange="return RedirectLanguage(this.value);">
<option>Please select language</option>
<option value="fr">Français</option>

</select>

Description

Select element must have an accessible name. Detected by axe-core rule select-name on 4 of 1902 scanned pages (4 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6341a3.htm.
  2. Locate the element: select
  3. Confirm the axe-core finding for rule select-name against WCAG 4.1.2 Name, Role, Value.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited manipulation/strength — 13.0% of population

Affected pages

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Give the <select> an accessible name via a <label> or aria-label.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/select-name?application=axeAPI

Serious axe blink WCAG 2.0 A <blink> elements are deprecated and must not be used (WCAG 2.2.2) 4/1902 pages · 4 instances
Bug ID
VS-ca231c8c
Pattern ID
VS-4b45acfe
Combined ID
VS-ca231c8c (pattern VS-4b45acfe) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
2.2.2 Pause, Stop, Hide (Level A, WCAG 2.0)
XPath / selector
blink
History
first seen 2026-W25, last seen 2026-W35 (11 wk)

HTML snippet — use this to validate the finding without re-running the tool

<blink><big><strong>Disclaimer</strong></big></blink>

Description

<blink> elements are deprecated and must not be used. Detected by axe-core rule blink on 4 of 1902 scanned pages (4 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5415a3.htm.
  2. Locate the element: blink
  3. Confirm the axe-core finding for rule blink against WCAG 2.2.2 Pause, Stop, Hide.

Impact

Affects Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).

  • Limited vision — 2.4% of population
  • Limited cognitive, language, or learning ability — 11.0% of population

Affected pages

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/blink?application=axeAPI

Serious axe listitem WCAG 2.0 A <li> elements must be contained in a <ul> or <ol> (WCAG 1.3.1) 3/1902 pages · 13 instances
Bug ID
VS-8742c7e7
Pattern ID
VS-6175596b
Combined ID
VS-8742c7e7 (pattern VS-6175596b) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
1.3.1 Info and Relationships (Level A, WCAG 2.0)
XPath / selector
.table-row.row[role="row"]:nth-child(3) > .table-col[data-col="2"][role="cell"] > li:nth-child(2)
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<li>Provider education</li>

Description

<li> elements must be contained in a <ul> or <ol>. Detected by axe-core rule listitem on 3 of 1902 scanned pages (13 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/liver-cancer/prevention/index.html.
  2. Locate the element: .table-row.row[role="row"]:nth-child(3) > .table-col[data-col="2"][role="cell"] > li:nth-child(2)
  3. Confirm the axe-core finding for rule listitem against WCAG 1.3.1 Info and Relationships.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited cognitive, language, or learning ability — 11.0% of population

Affected pages

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: <li> must be inside a <ul> or <ol>.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/listitem?application=axeAPI

Serious axe aria-command-name WCAG 2.0 A ARIA commands must have an accessible name (WCAG 4.1.2) 2/1902 pages · 16 instances Likely content
Bug ID
VS-f9fea00c
Pattern ID
VS-5c82bd60
Combined ID
VS-f9fea00c (pattern VS-5c82bd60) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
4.1.2 Name, Role, Value (Level A, WCAG 2.0)
XPath / selector
th[aria-labelledby=":rb:-heading-0"] > .sort-icon[role="button"]
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<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

Description

ARIA commands must have an accessible name. Detected by axe-core rule aria-command-name on 2 of 1902 scanned pages (16 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/united-states-cancer-statistics/publications/prostate-cancer-stat-bite.html.
  2. Locate the element: th[aria-labelledby=":rb:-heading-0"] > .sort-icon[role="button"]
  3. Confirm the axe-core finding for rule aria-command-name against WCAG 4.1.2 Name, Role, Value.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited manipulation/strength — 13.0% of population

Affected pages

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Give the command (button/link/menuitem) an accessible name via text or aria-label.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/aria-command-name?application=axeAPI

Critical axe aria-required-children WCAG 2.0 A Certain ARIA roles must contain particular children (WCAG 1.3.1) 1/1902 pages · 2 instances Likely content
Bug ID
VS-6acd1389
Pattern ID
VS-9429bb8d
Combined ID
VS-6acd1389 (pattern VS-9429bb8d) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
1.3.1 Info and Relationships (Level A, WCAG 2.0)
XPath / selector
#accordion-7
History
first seen 2026-W25, last seen 2026-W35 (10 wk)

HTML snippet — use this to validate the finding without re-running the tool

<div class="accordion indicator-plus accordion-white mb3" id="accordion-7" role="tablist">

Description

Certain ARIA roles must contain particular children. Detected by axe-core rule aria-required-children on 1 of 1902 scanned pages (2 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/stophivtogether/hiv-testing/self-testing.html?s_cid=so_togetherconsumertk0186.
  2. Locate the element: #accordion-7
  3. Confirm the axe-core finding for rule aria-required-children against WCAG 1.3.1 Info and Relationships.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited cognitive, language, or learning ability — 11.0% of population

Affected pages

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Add the child roles this container role requires (e.g. a list needs listitem children).

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/aria-required-children?application=axeAPI

Critical axe button-name WCAG 2.0 A Buttons must have discernible text (WCAG 4.1.2) 1/1902 pages · 1 instances Likely content
Bug ID
VS-cc9bc01c
Pattern ID
VS-e7298c00
Combined ID
VS-cc9bc01c (pattern VS-e7298c00) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
4.1.2 Name, Role, Value (Level A, WCAG 2.0)
XPath / selector
#search__icon
History
first seen 2026-W26, last seen 2026-W35 (8 wk)

HTML snippet — use this to validate the finding without re-running the tool

<button id="search__icon" class="c-search__icon"></button>

Description

Buttons must have discernible text. Detected by axe-core rule button-name on 1 of 1902 scanned pages (1 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/hiv/es/prevention/como-prevenir-el-vih-con-el-uso-de-pep.html.
  2. Locate the element: #search__icon
  3. Confirm the axe-core finding for rule button-name against WCAG 4.1.2 Name, Role, Value.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited manipulation/strength — 13.0% of population

Affected pages

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Give the button an accessible name via its text content, aria-label, or aria-labelledby.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/button-name?application=axeAPI

Serious axe aria-hidden-focus WCAG 2.0 A ARIA hidden element must not be focusable or contain focusable elements (WCAG 4.1.2) 1/1902 pages · 1 instances Likely content
Bug ID
VS-bd6c8b5d
Pattern ID
VS-45146742
Combined ID
VS-bd6c8b5d (pattern VS-45146742) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
4.1.2 Name, Role, Value (Level A, WCAG 2.0)
XPath / selector
#divIdleTimeout
History
first seen 2026-W29, last seen 2026-W35 (4 wk)

HTML snippet — use this to validate the finding without re-running the tool

<div id="divIdleTimeout" class="modal fade background-and-border-none" style="display: block;background: none;width: 100%;box-shadow: none;border: none;" tabindex="-1" role="dialog" aria-hidden="true"

Description

ARIA hidden element must not be focusable or contain focusable elements. Detected by axe-core rule aria-hidden-focus on 1 of 1902 scanned pages (1 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/ardi.
  2. Locate the element: #divIdleTimeout
  3. Confirm the axe-core finding for rule aria-hidden-focus against WCAG 4.1.2 Name, Role, Value.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited manipulation/strength — 13.0% of population

Affected pages

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Don't put focusable elements inside aria-hidden="true"; they become a keyboard trap for screen-reader users.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/aria-hidden-focus?application=axeAPI

Serious axe aria-tab-name WCAG 2.0 A ARIA tab nodes must have an accessible name (WCAG 4.1.2) 1/1902 pages · 1 instances Likely content
Bug ID
VS-56d99436
Pattern ID
VS-e1c6d4a1
Combined ID
VS-56d99436 (pattern VS-e1c6d4a1) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
4.1.2 Name, Role, Value (Level A, WCAG 2.0)
XPath / selector
.dropdown
History
first seen 2026-W35, last seen 2026-W35 (1 wk)

HTML snippet — use this to validate the finding without re-running the tool

<div role="tab" class="dropdown">

Description

ARIA tab nodes must have an accessible name. Detected by axe-core rule aria-tab-name on 1 of 1902 scanned pages (1 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/nccdphp/dnpao/data-trends-maps/index.html.
  2. Locate the element: .dropdown
  3. Confirm the axe-core finding for rule aria-tab-name against WCAG 4.1.2 Name, Role, Value.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited manipulation/strength — 13.0% of population

Affected pages

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/aria-tab-name?application=axeAPI

Serious axe document-title WCAG 2.0 A Documents must have <title> element to aid in navigation (WCAG 2.4.2) 1/1902 pages · 1 instances Likely content
Bug ID
VS-a60287fb
Pattern ID
VS-c80d5faa
Combined ID
VS-a60287fb (pattern VS-c80d5faa) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
2.4.2 Page Titled (Level A, WCAG 2.0)
XPath / selector
#js
History
first seen 2026-W25, last seen 2026-W35 (7 wk)

HTML snippet — use this to validate the finding without re-running the tool

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" id="js">

Description

Documents must have <title> element to aid in navigation. Detected by axe-core rule document-title on 1 of 1902 scanned pages (1 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5906a3.htm.
  2. Locate the element: #js
  3. Confirm the axe-core finding for rule document-title against WCAG 2.4.2 Page Titled.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited cognitive, language, or learning ability — 11.0% of population

Affected pages

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Give the page a unique, descriptive <title>.

Drupal tip: Drupal generates page titles from the node title + site name. Customise the pattern at Admin › Configuration › Search and metadata › Metatag.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/document-title?application=axeAPI

Serious axe aria-prohibited-attr WCAG 2.0 A Elements must only use permitted ARIA attributes (WCAG 4.1.2) 1/1902 pages · 1 instances Likely content
Bug ID
VS-59468567
Pattern ID
VS-ebb1c464
Combined ID
VS-59468567 (pattern VS-ebb1c464) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
4.1.2 Name, Role, Value (Level A, WCAG 2.0)
XPath / selector
#UNIQUE36545683a172a882dd
History
first seen 2026-W28, last seen 2026-W35 (8 wk)

HTML snippet — use this to validate the finding without re-running the tool

<div class="cdc-card-slider cdc-video-slider slick-initialized slick-slider cdc-carousel-slider" id="UNIQUE36545683a172a882dd" aria-label="Carousel">

Description

Elements must only use permitted ARIA attributes. Detected by axe-core rule aria-prohibited-attr on 1 of 1902 scanned pages (1 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/stophivtogether/hiv-testing/self-testing.html?s_cid=so_togetherconsumertk0186.
  2. Locate the element: #UNIQUE36545683a172a882dd
  3. Confirm the axe-core finding for rule aria-prohibited-attr against WCAG 4.1.2 Name, Role, Value.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited manipulation/strength — 13.0% of population

Affected pages

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/aria-prohibited-attr?application=axeAPI

Serious axe region Best Practice All page content should be contained by landmarks (WCAG criterion undetermined) 1686/1902 pages · 12867 instances Likely template
Bug ID
VS-0e1c28a6
Pattern ID
VS-f18df681
Combined ID
VS-0e1c28a6 (pattern VS-f18df681) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
Best Practice
Obligation
advisory
Handling
review
WCAG SC
Best Practice — not a WCAG requirement
XPath / selector
.cdc-site-gov-notice
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<div class="cdc-site-gov-notice noindex noprint" aria-label="Official website of the United States government">

Description

All page content should be contained by landmarks. Detected by axe-core rule region on 1686 of 1902 scanned pages (12867 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/niosh/docs/2020-124.
  2. Locate the element: .cdc-site-gov-notice
  3. Confirm the axe-core finding for rule region.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 1686 pages (CSV).

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Wrap all page content in landmarks (header, nav, main, footer) so users can navigate by region.

Drupal tip: Use Drupal's region system (header, navigation, main, sidebar, footer) and map each to an HTML5 landmark element in your theme's page.html.twig.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/region?application=axeAPI

Serious axe label-title-only Best Practice Form elements should have a visible label (WCAG criterion undetermined) 109/1902 pages · 109 instances Likely template
Bug ID
VS-22ae767f
Pattern ID
VS-33841929
Combined ID
VS-22ae767f (pattern VS-33841929) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
Best Practice
Obligation
advisory
Handling
review
WCAG SC
Best Practice — not a WCAG requirement
XPath / selector
.smallfield
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<input class="smallfield" type="text" name="email" size="15" title="Insertar e-mail" value="Insertar e-mail" onfocus="this.value=''">

Description

Form elements should have a visible label. Detected by axe-core rule label-title-only on 109 of 1902 scanned pages (109 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/pcd/issues/2011/jul/10_0193_es.htm.
  2. Locate the element: .smallfield
  3. Confirm the axe-core finding for rule label-title-only.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 109 pages (CSV).

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/label-title-only?application=axeAPI

Serious axe aria-dialog-name Best Practice ARIA dialog and alertdialog nodes should have an accessible name (WCAG criterion undetermined) 1/1902 pages · 1 instances Likely content
Bug ID
VS-bf02ad62
Pattern ID
VS-fa724f90
Combined ID
VS-bf02ad62 (pattern VS-fa724f90) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
Best Practice
Obligation
advisory
Handling
review
WCAG SC
Best Practice — not a WCAG requirement
XPath / selector
.sr-modal-dialog
History
first seen 2026-W29, last seen 2026-W35 (6 wk)

HTML snippet — use this to validate the finding without re-running the tool

<div class="sr-modal-dialog" role="dialog" tabindex="-1" style="max-width: 500px;">

Description

ARIA dialog and alertdialog nodes should have an accessible name. Detected by axe-core rule aria-dialog-name on 1 of 1902 scanned pages (1 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/wtc/youthcohort.html.
  2. Locate the element: .sr-modal-dialog
  3. Confirm the axe-core finding for rule aria-dialog-name.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Give the dialog an accessible name (aria-label or aria-labelledby).

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/aria-dialog-name?application=axeAPI

Moderate alfa sia-r113 WCAG 2.2 AA Target size is at least 24×24 CSS pixels or has spacing (Minimum) (WCAG 2.5.8) 169/1902 pages · 1713 instances Likely template
Bug ID
VS-428404ed
Pattern ID
VS-179ad9b3
Combined ID
VS-428404ed (pattern VS-179ad9b3) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.2 AA
Obligation
required
Handling
review
WCAG SC
2.5.8 Target Size (Minimum) (Level AA, WCAG 2.2)
XPath / selector
<a href="https://www.cdc.gov/Other/plugins/#pdf">
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

Target size is at least 24×24 CSS pixels or has spacing (Minimum). Detected by Siteimprove Alfa rule sia-r113 on 169 of 1902 scanned pages (1713 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w.
  2. Locate the element: <a href="https://www.cdc.gov/Other/plugins/#pdf">
  3. Confirm the Siteimprove Alfa finding for rule sia-r113 against WCAG 2.5.8 Target Size (Minimum).

Impact

Affects Limited manipulation/strength (13.0%), Limited reach (2.0%), Limited vision (2.4%).

  • Limited manipulation/strength — 13.0% of population
  • Limited reach — 2.0% of population
  • Limited vision — 2.4% of population

Affected pages

…and more — all 169 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r113

Moderate alfa sia-r69 WCAG 2.0 AA Text has sufficient color contrast (Enhanced) (WCAG 1.4.3) 141/1902 pages · 772 instances Likely template
Bug ID
VS-6f6ab3b4
Pattern ID
VS-f7e99f4b
Combined ID
VS-6f6ab3b4 (pattern VS-f7e99f4b) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 AA
Obligation
required
Handling
review
WCAG SC
1.4.3 Contrast (Minimum) (Level AA, WCAG 2.0)
XPath / selector
text: "Related Pages"
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

Text has sufficient color contrast (Enhanced). Detected by Siteimprove Alfa rule sia-r69 on 141 of 1902 scanned pages (772 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/niosh/erhms/about.
  2. Locate the element: text: "Related Pages"
  3. Confirm the Siteimprove Alfa finding for rule sia-r69 against WCAG 1.4.3 Contrast (Minimum).

Impact

Affects Limited vision (2.4%), Without color perception (4.5%).

  • Limited vision — 2.4% of population
  • Without color perception — 4.5% of population

Affected pages

…and more — all 141 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Increase text contrast to meet WCAG AA (4.5:1, or 3:1 for large text).

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r69

Moderate alfa sia-r2 WCAG 2.0 A Image has accessible name (WCAG 1.1.1) 102/1902 pages · 1395 instances Likely template
Bug ID
VS-b837e69a
Pattern ID
VS-a24eaa8c
Combined ID
VS-b837e69a (pattern VS-a24eaa8c) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
1.1.1 Non-text Content (Level A, WCAG 2.0)
XPath / selector
<img src="../../images/spacer.gif" width="10" height="1" alt=" ">
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

Image has accessible name. Detected by Siteimprove Alfa rule sia-r2 on 102 of 1902 scanned pages (1395 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm.
  2. Locate the element: <img src="../../images/spacer.gif" width="10" height="1" alt=" ">
  3. Confirm the Siteimprove Alfa finding for rule sia-r2 against WCAG 1.1.1 Non-text Content.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited cognitive, language, or learning ability — 11.0% of population

Affected pages

…and more — all 102 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Give every <img> an accessible name (alt text), or alt="" if purely decorative.

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r2

Moderate alfa sia-r4 WCAG 2.0 A Document has a valid lang attribute (WCAG 3.1.1) 98/1902 pages · 98 instances Likely template
Bug ID
VS-1e13b0e3
Pattern ID
VS-7a0e5645
Combined ID
VS-1e13b0e3 (pattern VS-7a0e5645) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
3.1.1 Language of Page (Level A, WCAG 2.0)
XPath / selector
<html>
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

Document has a valid lang attribute. Detected by Siteimprove Alfa rule sia-r4 on 98 of 1902 scanned pages (98 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm.
  2. Locate the element: <html>
  3. Confirm the Siteimprove Alfa finding for rule sia-r4 against WCAG 3.1.1 Language of Page.

Impact

Affects Without vision (1.0%), Limited cognitive, language, or learning ability (11.0%).

  • Without vision — 1.0% of population
  • Limited cognitive, language, or learning ability — 11.0% of population

Affected pages

…and more — all 98 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Add a valid lang attribute to <html>.

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r4

Moderate alfa sia-r68 WCAG 2.0 A Presentational children of an element are not focusable (WCAG 1.3.1) 59/1902 pages · 627 instances Likely template
Bug ID
VS-5c0ada8b
Pattern ID
VS-d6097011
Combined ID
VS-5c0ada8b (pattern VS-d6097011) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
1.3.1 Info and Relationships (Level A, WCAG 2.0)
XPath / selector
<ul>
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

Presentational children of an element are not focusable. Detected by Siteimprove Alfa rule sia-r68 on 59 of 1902 scanned pages (627 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/liver-cancer/prevention/index.html.
  2. Locate the element: <ul>
  3. Confirm the Siteimprove Alfa finding for rule sia-r68 against WCAG 1.3.1 Info and Relationships.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited cognitive, language, or learning ability — 11.0% of population

Affected pages

…and more — all 59 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r68

Moderate alfa sia-r14 WCAG 2.1 A Accessible name of link or button matches visible label (WCAG 2.5.3) 56/1902 pages · 93 instances Likely template
Bug ID
VS-d539843e
Pattern ID
VS-f7dba940
Combined ID
VS-d539843e (pattern VS-f7dba940) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.1 A
Obligation
required
Handling
review
WCAG SC
2.5.3 Label in Name (Level A, WCAG 2.1)
XPath / selector
<a data-action="print" href="#print" class="d-none d-md-block" aria-label="print this page">
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

Accessible name of link or button matches visible label. Detected by Siteimprove Alfa rule sia-r14 on 56 of 1902 scanned pages (93 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-118sp.html.
  2. Locate the element: <a data-action="print" href="#print" class="d-none d-md-block" aria-label="print this page">
  3. Confirm the Siteimprove Alfa finding for rule sia-r14 against WCAG 2.5.3 Label in Name.

Impact

Affects Without vision (1.0%), Without speech (0.5%).

  • Without vision — 1.0% of population
  • Without speech — 0.5% of population

Affected pages

…and more — all 56 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r14

Moderate alfa sia-r11 WCAG 2.0 A Link has accessible name (WCAG 2.4.4) 53/1902 pages · 159 instances Likely template
Bug ID
VS-18310a15
Pattern ID
VS-28ebd979
Combined ID
VS-18310a15 (pattern VS-28ebd979) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
2.4.4 Link Purpose (In Context) (Level A, WCAG 2.0)
XPath / selector
<a href="http://www.cdc.gov/">
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

Link has accessible name. Detected by Siteimprove Alfa rule sia-r11 on 53 of 1902 scanned pages (159 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm.
  2. Locate the element: <a href="http://www.cdc.gov/">
  3. Confirm the Siteimprove Alfa finding for rule sia-r11 against WCAG 2.4.4 Link Purpose (In Context).

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited cognitive, language, or learning ability — 11.0% of population

Affected pages

…and more — all 53 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Give the link an accessible name via text content or aria-label.

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r11

Moderate alfa sia-r8 WCAG 2.0 A Form field has accessible name (WCAG 4.1.2) 27/1902 pages · 45 instances Likely template
Bug ID
VS-dbd3b157
Pattern ID
VS-a48e6078
Combined ID
VS-dbd3b157 (pattern VS-a48e6078) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.0 A
Obligation
required
Handling
review
WCAG SC
4.1.2 Name, Role, Value (Level A, WCAG 2.0)
XPath / selector
<input id="searchBox" class="searchBox" name="query" maxlength="256">
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

Form field has accessible name. Detected by Siteimprove Alfa rule sia-r8 on 27 of 1902 scanned pages (45 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w.
  2. Locate the element: <input id="searchBox" class="searchBox" name="query" maxlength="256">
  3. Confirm the Siteimprove Alfa finding for rule sia-r8 against WCAG 4.1.2 Name, Role, Value.

Impact

Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).

  • Without vision — 1.0% of population
  • Limited vision — 2.4% of population
  • Limited manipulation/strength — 13.0% of population

Affected pages

…and more — all 27 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Associate the form field with a label.

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r8

Moderate axe heading-order Best Practice Heading levels should only increase by one (WCAG criterion undetermined) 562/1902 pages · 791 instances Likely template
Bug ID
VS-d57dab14
Pattern ID
VS-d25f622d
Combined ID
VS-d57dab14 (pattern VS-d25f622d) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
Best Practice
Obligation
advisory
Handling
review
WCAG SC
Best Practice — not a WCAG requirement
XPath / selector
h4
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<h4>Shin Y. Kim, MPH; Lucinda England, MD, MSPH; William Sappenfield, MD, MPH; Hoyt G. Wilson, PhD; Connie L. Bish, PhD, MPH; Hamisu M. Salihu, MD, PhD; Andrea J. Sharma, PhD, MPH</h4>

Description

Heading levels should only increase by one. Detected by axe-core rule heading-order on 562 of 1902 scanned pages (791 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/pcd/issues/2012/11_0249_es.htm.
  2. Locate the element: h4
  3. Confirm the axe-core finding for rule heading-order.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 562 pages (CSV).

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Use heading levels in order (h1 → h2 → h3) without skipping; structure, not size.

Drupal tip: Drupal Views and blocks can insert headings at arbitrary levels. In the Views UI, set "Title tag" for each display. For block titles, configure the heading level in the block's layout settings.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/heading-order?application=axeAPI

Moderate axe landmark-one-main Best Practice Document should have one main landmark (WCAG criterion undetermined) 482/1902 pages · 482 instances Likely template
Bug ID
VS-ab59c819
Pattern ID
VS-d5d82446
Combined ID
VS-ab59c819 (pattern VS-d5d82446) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
Best Practice
Obligation
advisory
Handling
review
WCAG SC
Best Practice — not a WCAG requirement
XPath / selector
html
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<html>

Description

Document should have one main landmark. Detected by axe-core rule landmark-one-main on 482 of 1902 scanned pages (482 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.htm.
  2. Locate the element: html
  3. Confirm the axe-core finding for rule landmark-one-main.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 482 pages (CSV).

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Each page should have exactly one <main> landmark.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/landmark-one-main?application=axeAPI

Moderate axe landmark-unique Best Practice Landmarks should have a unique role or role/label/title (i.e. accessible name) c (WCAG criterion undetermined) 461/1902 pages · 474 instances Likely template
Bug ID
VS-26070a90
Pattern ID
VS-8806389c
Combined ID
VS-26070a90 (pattern VS-8806389c) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
Best Practice
Obligation
advisory
Handling
review
WCAG SC
Best Practice — not a WCAG requirement
XPath / selector
.page-right-rail__static
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<aside class="page-right-rail__static noindex" role="complementary" style="margin-top: 47px;">

Description

Landmarks should have a unique role or role/label/title (i.e. accessible name) c. Detected by axe-core rule landmark-unique on 461 of 1902 scanned pages (474 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/niosh/erhms/about.
  2. Locate the element: .page-right-rail__static
  3. Confirm the axe-core finding for rule landmark-unique.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 461 pages (CSV).

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: 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.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/landmark-unique?application=axeAPI

Moderate alfa sia-r111 WCAG 2.x AAA Target size is at least 44×44 CSS pixels (Enhanced) (WCAG 2.5.5) 442/1902 pages · 13141 instances Likely template
Bug ID
VS-e61bfb4c
Pattern ID
VS-cb53cc4d
Combined ID
VS-e61bfb4c (pattern VS-cb53cc4d) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.x AAA
Obligation
aspirational
Handling
review
WCAG SC
2.5.5 Target Size (Enhanced) (Level AAA, WCAG 2.1)
XPath / selector
<a class="cdc-header__title-super" href="/niosh/index.html">
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

Target size is at least 44×44 CSS pixels (Enhanced). Detected by Siteimprove Alfa rule sia-r111 on 442 of 1902 scanned pages (13141 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/niosh/erhms/about.
  2. Locate the element: <a class="cdc-header__title-super" href="/niosh/index.html">
  3. Confirm the Siteimprove Alfa finding for rule sia-r111 against WCAG 2.5.5 Target Size (Enhanced).

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 442 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r111

Moderate alfa sia-r66 WCAG 2.x AAA Text has enhanced contrast (WCAG 1.4.6) 381/1902 pages · 11316 instances Likely template
Bug ID
VS-ae2e4d5f
Pattern ID
VS-646b1e0b
Combined ID
VS-ae2e4d5f (pattern VS-646b1e0b) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.x AAA
Obligation
aspirational
Handling
review
WCAG SC
1.4.6 Contrast (Enhanced) (Level AAA, WCAG 2.0)
XPath / selector
text: " Here's how you know "
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

Text has enhanced contrast. Detected by Siteimprove Alfa rule sia-r66 on 381 of 1902 scanned pages (11316 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/niosh/erhms/about.
  2. Locate the element: text: " Here's how you know "
  3. Confirm the Siteimprove Alfa finding for rule sia-r66 against WCAG 1.4.6 Contrast (Enhanced).

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 381 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Increase text contrast to meet WCAG AAA (7:1).

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r66

Moderate alfa sia-r57 Undetermined Scrolling content can be accessed by keyboard (WCAG criterion undetermined) 314/1902 pages · 4672 instances Likely template
Bug ID
VS-acb4ff77
Pattern ID
VS-c18be945
Combined ID
VS-acb4ff77 (pattern VS-c18be945) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
Undetermined
Obligation
unmapped
Handling
review
WCAG SC
undetermined
XPath / selector
text: "Skip directly to search"
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

Scrolling content can be accessed by keyboard. Detected by Siteimprove Alfa rule sia-r57 on 314 of 1902 scanned pages (4672 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/niosh/erhms/about.
  2. Locate the element: text: "Skip directly to search"
  3. Confirm the Siteimprove Alfa finding for rule sia-r57.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 314 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r57

Moderate alfa sia-r18 Undetermined aria attribute is permitted for element role (WCAG criterion undetermined) 217/1902 pages · 222 instances Likely template
Bug ID
VS-7459ba27
Pattern ID
VS-e05344b9
Combined ID
VS-7459ba27 (pattern VS-e05344b9) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
Undetermined
Obligation
unmapped
Handling
review
WCAG SC
undetermined
XPath / selector
@aria-label="Official website of the United States government"
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

aria attribute is permitted for element role. Detected by Siteimprove Alfa rule sia-r18 on 217 of 1902 scanned pages (222 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/niosh/erhms/about.
  2. Locate the element: @aria-label="Official website of the United States government"
  3. Confirm the Siteimprove Alfa finding for rule sia-r18.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 217 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Only use ARIA states/properties that are allowed on this element/role.

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r18

Moderate alfa sia-r74 WCAG 2.x AAA Link is distinguishable without relying on color (WCAG 1.4.8) 152/1902 pages · 1714 instances Likely template
Bug ID
VS-4011e0af
Pattern ID
VS-fbf54eba
Combined ID
VS-4011e0af (pattern VS-fbf54eba) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.x AAA
Obligation
aspirational
Handling
review
WCAG SC
1.4.8 Visual Presentation (Level AAA, WCAG 2.0)
XPath / selector
<p class="cdc-footer__super-desc">
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

Link is distinguishable without relying on color. Detected by Siteimprove Alfa rule sia-r74 on 152 of 1902 scanned pages (1714 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/niosh/erhms/about.
  2. Locate the element: <p class="cdc-footer__super-desc">
  3. Confirm the Siteimprove Alfa finding for rule sia-r74 against WCAG 1.4.8 Visual Presentation.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 152 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r74

Moderate alfa sia-r73 WCAG 2.x AAA Text has minimum contrast ratio of 4.5:1 (WCAG 1.4.8) 149/1902 pages · 9522 instances Likely template
Bug ID
VS-78e49c0b
Pattern ID
VS-2208081b
Combined ID
VS-78e49c0b (pattern VS-2208081b) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
WCAG 2.x AAA
Obligation
aspirational
Handling
review
WCAG SC
1.4.8 Visual Presentation (Level AAA, WCAG 2.0)
XPath / selector
<p>
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

Text has minimum contrast ratio of 4.5:1. Detected by Siteimprove Alfa rule sia-r73 on 149 of 1902 scanned pages (9522 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w.
  2. Locate the element: <p>
  3. Confirm the Siteimprove Alfa finding for rule sia-r73 against WCAG 1.4.8 Visual Presentation.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 149 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r73

Moderate alfa sia-r53 Undetermined Headings are structured hierarchically (WCAG criterion undetermined) 148/1902 pages · 203 instances Likely template
Bug ID
VS-889a8d83
Pattern ID
VS-f054f4a4
Combined ID
VS-889a8d83 (pattern VS-f054f4a4) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
Undetermined
Obligation
unmapped
Handling
review
WCAG SC
undetermined
XPath / selector
<h3>
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

Headings are structured hierarchically. Detected by Siteimprove Alfa rule sia-r53 on 148 of 1902 scanned pages (203 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm.
  2. Locate the element: <h3>
  3. Confirm the Siteimprove Alfa finding for rule sia-r53.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 148 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Use headings in a logical, non-skipping order.

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r53

Moderate alfa sia-r70 Undetermined No obsolete or deprecated elements are used (WCAG criterion undetermined) 112/1902 pages · 112 instances Likely template
Bug ID
VS-5c67d19d
Pattern ID
VS-3d033717
Combined ID
VS-5c67d19d (pattern VS-3d033717) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
Undetermined
Obligation
advisory
Handling
review
WCAG SC
undetermined
XPath / selector
{"type":"document","children":[{"type":"element","children":[{"type":"element","
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

No obsolete or deprecated elements are used. Detected by Siteimprove Alfa rule sia-r70 on 112 of 1902 scanned pages (112 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm.
  2. Locate the element: {"type":"document","children":[{"type":"element","children":[{"type":"element","
  3. Confirm the Siteimprove Alfa finding for rule sia-r70.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 112 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r70

Minor axe aria-allowed-role Best Practice ARIA role should be appropriate for the element (WCAG criterion undetermined) 88/1902 pages · 97 instances Likely template
Bug ID
VS-b10aed7f
Pattern ID
VS-4fac2f41
Combined ID
VS-b10aed7f (pattern VS-4fac2f41) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
Best Practice
Obligation
advisory
Handling
review
WCAG SC
Best Practice — not a WCAG requirement
XPath / selector
img[role="presentation"]
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<img src="/niosh/docs/2020-124/images/2020-124.jpg" alt="Immediately Dangerous to Life or Health (IDLH) Value Profile: Chlorine Trifluoride (CAS® No. 7790-91-2)" role="presentation">

Description

ARIA role should be appropriate for the element. Detected by axe-core rule aria-allowed-role on 88 of 1902 scanned pages (97 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/niosh/docs/2020-124.
  2. Locate the element: img[role="presentation"]
  3. Confirm the axe-core finding for rule aria-allowed-role.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 88 pages (CSV).

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

How to fix: Remove or change the ARIA role — it isn't allowed on this element type.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/aria-allowed-role?application=axeAPI

Moderate deprecated-html presentational-attr Undetermined Presentational attribute (use CSS) (WCAG criterion undetermined) 56/1902 pages · 9004 instances Likely template
Bug ID
VS-55ffdfc1
Pattern ID
VS-04a9d28c
Combined ID
VS-55ffdfc1 (pattern VS-04a9d28c) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
Undetermined
Obligation
unmapped
Handling
review
WCAG SC
undetermined
Rule
deprecated-html — Presentational attribute (use CSS) [presentational-attr]
XPath / selector
body
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<body bgcolor="#ffffff" leftmargin="0" topmargin="0" marginheight="0" marginwidth="0" class=" dmat-load-complete">
<!-- report header -->
<!--webbot bot="Include" U-Include="../../headers_footers/repo

Description

Presentational attribute (use CSS). Detected by deprecated-html rule presentational-attr on 56 of 1902 scanned pages (9004 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.htm.
  2. Locate the element: body
  3. Confirm the deprecated-html finding for rule presentational-attr.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 56 pages (CSV).

Testing environment

Automated: deprecated-html, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

Not captured by automated scan — requires manual testing.

Moderate axe page-has-heading-one Best Practice Page should contain a level-one heading (WCAG criterion undetermined) 52/1902 pages · 52 instances Likely template
Bug ID
VS-1c60cd4b
Pattern ID
VS-fa44f293
Combined ID
VS-1c60cd4b (pattern VS-fa44f293) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
Best Practice
Obligation
advisory
Handling
review
WCAG SC
Best Practice — not a WCAG requirement
XPath / selector
html
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<html lang="en-us" class="cdc-theme-cdc cdc-page-type--home" style="--mobile-header-offset: 0px;">

Description

Page should contain a level-one heading. Detected by axe-core rule page-has-heading-one on 52 of 1902 scanned pages (52 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/cdiff.
  2. Locate the element: html
  3. Confirm the axe-core finding for rule page-has-heading-one.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 52 pages (CSV).

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/page-has-heading-one?application=axeAPI

Moderate alfa sia-r61 Undetermined Form field label is visible (WCAG criterion undetermined) 43/1902 pages · 43 instances Likely template
Bug ID
VS-5b0b44af
Pattern ID
VS-7118fead
Combined ID
VS-5b0b44af (pattern VS-7118fead) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
Undetermined
Obligation
unmapped
Handling
review
WCAG SC
undetermined
XPath / selector
{"type":"document","children":[{"type":"type","name":"html","publicId":"-//W3C//
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

Form field label is visible. Detected by Siteimprove Alfa rule sia-r61 on 43 of 1902 scanned pages (43 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w.
  2. Locate the element: {"type":"document","children":[{"type":"type","name":"html","publicId":"-//W3C//
  3. Confirm the Siteimprove Alfa finding for rule sia-r61.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 43 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r61

Moderate deprecated-html font-element Undetermined Obsolete <font> element (use CSS) (WCAG criterion undetermined) 32/1902 pages · 246 instances Likely template
Bug ID
VS-1ece730c
Pattern ID
VS-91d2294a
Combined ID
VS-1ece730c (pattern VS-91d2294a) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
Undetermined
Obligation
unmapped
Handling
review
WCAG SC
undetermined
Rule
deprecated-html — Obsolete <font> element (use CSS) [font-element]
XPath / selector
font
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<font size="3" face="Arial, Helvetica, Verdana" color="#FFFFFF"><i><b>Weekly</b></i></font>

Description

Obsolete <font> element (use CSS). Detected by deprecated-html rule font-element on 32 of 1902 scanned pages (246 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.htm.
  2. Locate the element: font
  3. Confirm the deprecated-html finding for rule font-element.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 32 pages (CSV).

Testing environment

Automated: deprecated-html, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

Not captured by automated scan — requires manual testing.

Minor axe empty-table-header Best Practice Table header text should not be empty (WCAG criterion undetermined) 30/1902 pages · 133 instances Likely template
Bug ID
VS-d1862667
Pattern ID
VS-d69fc059
Combined ID
VS-d1862667 (pattern VS-d69fc059) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
Best Practice
Obligation
advisory
Handling
review
WCAG SC
Best Practice — not a WCAG requirement
XPath / selector
.story:nth-child(31) > .data-table > tbody > tr:nth-child(2) > .end-table-column-head[colspan="5"]
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

HTML snippet — use this to validate the finding without re-running the tool

<th class="end-table-column-head" scope="col" colspan="5">
							</th>

Description

Table header text should not be empty. Detected by axe-core rule empty-table-header on 30 of 1902 scanned pages (133 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5825md.htm.
  2. Locate the element: .story:nth-child(31) > .data-table > tbody > tr:nth-child(2) > .end-table-column-head[colspan="5"]
  3. Confirm the axe-core finding for rule empty-table-header.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 30 pages (CSV).

Testing environment

Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/empty-table-header?application=axeAPI

Moderate alfa sia-r78 Undetermined Table header has scope (WCAG criterion undetermined) 26/1902 pages · 28 instances Likely template
Bug ID
VS-26dbd781
Pattern ID
VS-2cd767ca
Combined ID
VS-26dbd781 (pattern VS-2cd767ca) — use this format in JIRA/spreadsheets to filter by instance or pattern
WCAG category
Undetermined
Obligation
unmapped
Handling
review
WCAG SC
undetermined
XPath / selector
<h2>
History
first seen 2026-W24, last seen 2026-W35 (12 wk)

Description

Table header has scope. Detected by Siteimprove Alfa rule sia-r78 on 26 of 1902 scanned pages (28 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10313.
  2. Locate the element: <h2>
  3. Confirm the Siteimprove Alfa finding for rule sia-r78.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 26 pages (CSV).

Testing environment

Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.

Suggested fix

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r78

19 more lower-priority finding(s) — summary only

Full detail — steps, affected pages, snippets — for these and every finding is in the CSV.

SeverityFindingWCAG categoryPages
Moderate Obsolete <big> element (use CSS) (WCAG criterion undetermined) [big-element] Undetermined 24
Minor Headings should not be empty (WCAG criterion undetermined) [empty-heading] Best Practice 15
Moderate Obsolete <center> element (use CSS) (WCAG criterion undetermined) [center-element] Undetermined 12
Moderate scope attribute should be used correctly (WCAG criterion undetermined) [scope-attr-valid] Best Practice 8
Moderate The skip-link target should exist and be focusable (WCAG criterion undetermined) [skip-link] Best Practice 8
Moderate Element has required aria-owns (WCAG 1.3.1) [sia-r46] WCAG 2.0 A 7
Moderate Duplicate role landmark is labeled (WCAG criterion undetermined) [sia-r79] Undetermined 5
Moderate Input purpose can be determined (WCAG criterion undetermined) [sia-r60] Undetermined 5
Moderate Element has required owned roles (WCAG 1.3.1) [sia-r64] WCAG 2.0 A 4
Moderate First focusable element is link to main content (WCAG criterion undetermined) [sia-r87] Undetermined 3
Moderate Tables are used for tabular data, not layout (WCAG criterion undetermined) [sia-r40] Undetermined 3
Moderate aria-hidden element is not exposed to assistive technology (WCAG 1.3.1) [sia-r45] WCAG 2.0 A 2
Moderate Scrollable element is keyboard accessible (WCAG 1.4.8) [sia-r80] WCAG 2.x AAA 2
Moderate Button has accessible name (WCAG 4.1.2) [sia-r12] WCAG 2.0 A 2
Minor Alternative text of images should not be repeated as text (WCAG criterion undetermined) [image-redundant-alt] Best Practice 2
Moderate Table cell has header (WCAG 1.3.1) [sia-r77] WCAG 2.0 A 1
Moderate Component with same name serves same purpose (WCAG 4.1.2) [sia-r90] WCAG 2.0 A 1
Moderate Element with orientation is not locked (WCAG criterion undetermined) [sia-r59] Undetermined 1
Moderate Form field error is identified and described (WCAG criterion undetermined) [sia-r75] Undetermined 1

Deque axe-core findings

Rule-level axe-core summary (34 rule type(s))

Each failing rule links out to the axe-core documentation. For full element-level detail including HTML snippets and XPaths, see the bug reports above.

axe-core rules failing in 2026-W35, by pages affected
RuleImpactPages affectedInstancesExample pagesAll affected
All page content should be contained by landmarks [region] moderate 1686 12867 /niosh/docs/2020-124
/niosh/erhms/about
/cdiff		 all 1686 pages (CSV)
Heading levels should only increase by one [heading-order] moderate 562 791 /pcd/issues/2012/11_0249_es.htm
/nchs/products/databriefs/db363.htm
/niosh/ocas/secstatus.html		 all 562 pages (CSV)
Document should have one main landmark [landmark-one-main] moderate 482 482 /mmwr/preview/mmwrhtml/mm5711a7.htm
/mmwr/preview/mmwrhtml/mm6439a10.htm
/pcd/issues/2012/11_0249_es.htm		 all 482 pages (CSV)
Landmarks should have a unique role or role/label/title (i.e. accessible name) combination [landmark-unique] moderate 461 474 /niosh/erhms/about
/botulism/risk-factors/wound-botulism.html
/niosh/research-programs/portfolio/ptd.html		 all 461 pages (CSV)
Images must have alternative text [image-alt] critical 366 4317 /mmwr/preview/mmwrhtml/mm5711a7.htm
/mmwr/preview/mmwrhtml/mm5034a3.htm
/mmwr/preview/mmwrhtml/00001774.htm		 all 366 pages (CSV)
<html> element must have a lang attribute [html-has-lang] serious 355 355 /mmwr/preview/mmwrhtml/mm5711a7.htm
/mmwr/preview/mmwrhtml/mm5034a3.htm
/mmwr/preview/mmwrhtml/00001774.htm		 all 355 pages (CSV)
Elements must meet minimum color contrast ratio thresholds [color-contrast] serious 341 504 /mmwr/preview/mmwrhtml/mm5711a7.htm
/pcd/issues/2012/11_0249_es.htm
/mmwr/preview/mmwrhtml/mm6129a4.htm		 all 341 pages (CSV)
Links must have discernible text [link-name] serious 161 469 /pcd/issues/2012/11_0249_es.htm
/mmwr/indss_2008.html
/pcd/issues/2011/jul/10_0193_es.htm		 all 161 pages (CSV)
Form elements should have a visible label [label-title-only] serious 109 109 /pcd/issues/2011/jul/10_0193_es.htm
/PCD/issues/2006/apr/05_0126_es.htm
/pcd/issues/2006/jan/05_0099_zht.htm		 all 109 pages (CSV)
Form elements must have labels [label] critical 96 113 /mmwr/preview/mmwrhtml/mm6439a10.htm
/mmwr/preview/mmwrhtml/mm6129a4.htm
/mmwr/indss_2008.html		 all 96 pages (CSV)
ARIA role should be appropriate for the element [aria-allowed-role] minor 88 97 /niosh/docs/2020-124
/niosh/publications/es/hcp/numbered/2012-118sp.html
/niosh/publications/numbered/2019-128.html		 all 88 pages (CSV)
Page should contain a level-one heading [page-has-heading-one] moderate 52 52 /cdiff
/flu/weekly/WeeklyArchives2023-2024/WHONPHL02.html
/anthrax/site.html		 all 52 pages (CSV)
Table header text should not be empty [empty-table-header] minor 30 133 /mmwr/preview/mmwrhtml/mm5825md.htm
/nwss/rv/COVID19-national-data.html
/nchs/data/hestat/life-expectancy/life-expectancy-2018.htm		 all 30 pages (CSV)
Links must be distinguishable without relying on color [link-in-text-block] serious 24 24 /infection-control/hcp/healthcare-personnel-infrastructure-routine-practices/authors.html
/infection-control/hcp/isolation-precautions/appendix-a-table-5.html
/disability-emergency-preparedness/people-with-disabilities/opportunities-to-get-involved.html		 all 24 pages (CSV)
<ul> and <ol> must only directly contain <li>, <script> or <template> elements [list] serious 21 37 /mmwr/preview/mmwrhtml/00032890.htm
/mmwr/preview/mmwrhtml/00017761.htm
/MMWR/preview/MMWRhtml/rr5210a1.htm		 all 21 pages (CSV)
Scrollable region must have keyboard access [scrollable-region-focusable] serious 21 32 /infection-control/hcp/environmental-control/environmental-sampling.html
/mmwr/volumes/66/wr/mm6627a2.htm
/fluview/surveillance/2026-week-06.html		 all 21 pages (CSV)
Headings should not be empty [empty-heading] minor 15 27 /mmwr/preview/mmwrhtml/mm5416a4.htm
/dpdx/monthlyCaseStudies/2020/index.html
/dpdx/monthlyCaseStudies/2018/index.html		 all 15 pages (CSV)
Frames must have an accessible name [frame-title] serious 13 41 /cancer/es/prevention/healthy-choices.html
/cancer/features/prostate-cancer.html
/measles/resources/videos.html		 all 13 pages (CSV)
scope attribute should be used correctly [scope-attr-valid] moderate 8 49 /fluview/surveillance/2026-week-06.html
/fluview/surveillance/2026-week-17.html
/fluview/surveillance/2025-week-18.html		 all 8 pages (CSV)
Table cell headers attributes must refer to other <th> elements in the same table [td-headers-attr] serious 8 10 /brfss/acbs/2012/prevalence_tables/table4a_LLCP.html
/asthma/nhis/2021/table1-1.htm
/brfss/acbs/2009/prevalence_tables/table14.html		 all 8 pages (CSV)
The skip-link target should exist and be focusable [skip-link] moderate 8 8 /pcd/issues/2012/11_0249_es.htm
/niosh/contact/%20
/pcd/issues/2013/12_0073_es.htm		 all 8 pages (CSV)
Interactive controls must not be nested [nested-interactive] serious 6 13 /hivpartners/php/riskandprevention/index.html
/tobacco/campaign/tips/diseases/heart-disease-stroke.html
/tobacco/campaign/tips/resources/data/cigarette-smoking-in-united-states.html		 all 6 pages (CSV)
Select element must have an accessible name [select-name] critical 4 4 /mmwr/preview/mmwrhtml/mm6341a3.htm
/tobacco/campaign/tips/quit-smoking/quit-smoking-medications/which-quit-smoking-medicine-is-right-for-you/without-medicine.html
/tobacco/campaign/tips/quit-smoking/quit-smoking-medications/which-quit-smoking-medicine-is-right-for-you/without-medicine.html		 all 4 pages (CSV)
<blink> elements are deprecated and must not be used [blink] serious 4 4 /mmwr/preview/mmwrhtml/rr5415a3.htm
/mmwr/preview/mmwrhtml/rr5215a1.htm
/mmwr/preview/mmwrhtml/mm5614a7.htm		 all 4 pages (CSV)
<li> elements must be contained in a <ul> or <ol> [listitem] serious 3 13 /liver-cancer/prevention/index.html
/maternal-infant-health/pregnancy-weight/index.html
/lead-prevention/testing/index.html		 all 3 pages (CSV)
ARIA commands must have an accessible name [aria-command-name] serious 2 16 /united-states-cancer-statistics/publications/prostate-cancer-stat-bite.html
/hepatitis-surveillance-2022/hepatitis-c/figure-3-1.html		 all 2 pages (CSV)
Alternative text of images should not be repeated as text [image-redundant-alt] minor 2 3 /ardi
/tobacco/campaign/tips/diseases/index.html		 all 2 pages (CSV)
Certain ARIA roles must contain particular children [aria-required-children] critical 1 2 /stophivtogether/hiv-testing/self-testing.html all 1 pages (CSV)
ARIA tab nodes must have an accessible name [aria-tab-name] serious 1 1 /nccdphp/dnpao/data-trends-maps/index.html all 1 pages (CSV)
Buttons must have discernible text [button-name] critical 1 1 /hiv/es/prevention/como-prevenir-el-vih-con-el-uso-de-pep.html all 1 pages (CSV)
Documents must have <title> element to aid in navigation [document-title] serious 1 1 /mmwr/preview/mmwrhtml/mm5906a3.htm all 1 pages (CSV)
ARIA hidden element must not be focusable or contain focusable elements [aria-hidden-focus] serious 1 1 /ardi all 1 pages (CSV)
Elements must only use permitted ARIA attributes [aria-prohibited-attr] serious 1 1 /stophivtogether/hiv-testing/self-testing.html all 1 pages (CSV)
ARIA dialog and alertdialog nodes should have an accessible name [aria-dialog-name] serious 1 1 /wtc/youthcohort.html all 1 pages (CSV)

Siteimprove Alfa findings

Rule-level Alfa summary (31 rule type(s))

Rule-level summary from Siteimprove Alfa (W3C ACT-based). Findings that overlap with axe-core on the same WCAG success criterion are noted as possible duplicates in the bug reports above.

Alfa rules failing in 2026-W35, by pages affected
RuleImpactPages affectedInstancesExample pagesAll affected
Target size is at least 44×44 CSS pixels (Enhanced) [sia-r111] n/a 442 13141 /niosh/erhms/about
/mmwr/preview/mmwrhtml/mm6439a10.htm
/mmwr/preview/mmwrhtml/00053300.htm		 all 442 pages (CSV)
Text has enhanced contrast [sia-r66] n/a 381 11316 /niosh/erhms/about
/mmwr/preview/mmwrhtml/mm6439a10.htm
/sickle-cell/sickle-cell-trait/sickle-cell-trait-toolkit.html		 all 381 pages (CSV)
Scrolling content can be accessed by keyboard [sia-r57] n/a 314 4672 /niosh/erhms/about
/sickle-cell/sickle-cell-trait/sickle-cell-trait-toolkit.html
/niosh/publications/es/hcp/numbered/2012-118sp.html		 all 314 pages (CSV)
aria attribute is permitted for element role [sia-r18] n/a 217 222 /niosh/erhms/about
/sickle-cell/sickle-cell-trait/sickle-cell-trait-toolkit.html
/niosh/publications/es/hcp/numbered/2012-118sp.html		 all 217 pages (CSV)
Target size is at least 24×24 CSS pixels or has spacing (Minimum) [sia-r113] n/a 169 1713 /mmwr/preview/mmwrhtml/mm6439a10.htm
/mmwr/preview/mmwrhtml/00053300.htm
/mmwr/preview/mmwrhtml/mm4830a2.htm		 all 169 pages (CSV)
Link is distinguishable without relying on color [sia-r74] n/a 152 1714 /niosh/erhms/about
/mmwr/preview/mmwrhtml/00053300.htm
/niosh/publications/es/hcp/numbered/2012-118sp.html		 all 152 pages (CSV)
Text has minimum contrast ratio of 4.5:1 [sia-r73] n/a 149 9522 /mmwr/preview/mmwrhtml/mm6439a10.htm
/mmwr/preview/mmwrhtml/00053300.htm
/mmwr/preview/mmwrhtml/mm4830a2.htm		 all 149 pages (CSV)
Headings are structured hierarchically [sia-r53] n/a 148 203 /mmwr/preview/mmwrhtml/00053300.htm
/mmwr/preview/mmwrhtml/mm4830a2.htm
/mmwr/preview/mmwrhtml/mm5630a1.htm		 all 148 pages (CSV)
Text has sufficient color contrast (Enhanced) [sia-r69] n/a 141 772 /niosh/erhms/about
/niosh/heat-stress/about/illnesses.html
/infrastructure/resources-public-health-professionals/direct-assistance.html		 all 141 pages (CSV)
No obsolete or deprecated elements are used [sia-r70] n/a 112 112 /mmwr/preview/mmwrhtml/00053300.htm
/mmwr/preview/mmwrhtml/mm4830a2.htm
/mmwr/preview/mmwrhtml/mm5630a1.htm		 all 112 pages (CSV)
Image has accessible name [sia-r2] n/a 102 1395 /mmwr/preview/mmwrhtml/00053300.htm
/mmwr/preview/mmwrhtml/mm4830a2.htm
/mmwr/preview/mmwrhtml/mm5630a1.htm		 all 102 pages (CSV)
Document has a valid lang attribute [sia-r4] n/a 98 98 /mmwr/preview/mmwrhtml/00053300.htm
/mmwr/preview/mmwrhtml/mm4830a2.htm
/mmwr/preview/mmwrhtml/mm5630a1.htm		 all 98 pages (CSV)
Presentational children of an element are not focusable [sia-r68] n/a 59 627 /liver-cancer/prevention/index.html
/tobacco/tobacco-features/military.html
/phlp/php/about/competencies-for-legal-evaluation-studies.html		 all 59 pages (CSV)
Accessible name of link or button matches visible label [sia-r14] n/a 56 93 /niosh/publications/es/hcp/numbered/2012-118sp.html
/spanish/niosh/docs/2009-113_sp
/balamuthia/es/about/index.html		 all 56 pages (CSV)
Link has accessible name [sia-r11] n/a 53 159 /PCD/issues/2006/apr/05_0126_es.htm
/pcd/issues/2006/oct/06_0034_fr.htm
/pcd/issues/2011/jan/09_0247a.htm		 all 53 pages (CSV)
Form field label is visible [sia-r61] n/a 43 43 /mmwr/preview/mmwrhtml/mm6439a10.htm
/mmwr/preview/mmwrhtml/mm6341a3.htm
/anthrax/site.html		 all 43 pages (CSV)
Form field has accessible name [sia-r8] n/a 27 45 /mmwr/preview/mmwrhtml/mm6439a10.htm
/mmwr/preview/mmwrhtml/mm6341a3.htm
/mmwR/preview/mmwrhtml/mm5931a4.htm		 all 27 pages (CSV)
Table header has scope [sia-r78] n/a 26 28 /laboratory/specimen-submission/detail.html
/laboratory/specimen-submission/detail.html
/mmwr/volumes/66/wr/mm6605a1.htm		 all 26 pages (CSV)
Element has required aria-owns [sia-r46] n/a 7 101 /phlp/php/about/competencies-for-legal-evaluation-studies.html
/brfss/acbs/2009/prevalence_tables/table14.html
/brfss/acbs/2022/prevalence_tables/table10_LLCP.html		 all 7 pages (CSV)
Duplicate role landmark is labeled [sia-r79] n/a 5 27 /mmwr/preview/mmwrhtml/mm4830a2.htm
/mmwr/preview/mmwrhtml/mm4844md.htm
/mmwr/preview/mmwrhtml/00054265.htm		 all 5 pages (CSV)
Input purpose can be determined [sia-r60] n/a 5 5 /pcd/issues/2012/11_0086a.htm
/pcd/issues/2012/12_0143_es.htm
/pcd/issues/2013/12_0282_es.htm		 all 5 pages (CSV)
Element has required owned roles [sia-r64] n/a 4 6 /mmwr/preview/mmwrhtml/mm5553a1.htm
/mmwr/preview/mmwrhtml/mm5240a4.htm
/wtc/interest.html		 all 4 pages (CSV)
First focusable element is link to main content [sia-r87] n/a 3 3 /wtc/ohi.html
/wtc/interest.html
/wtc/youthcohort.html		 all 3 pages (CSV)
Tables are used for tabular data, not layout [sia-r40] n/a 3 3 /cannabis/es/about/las-leyes-estatales-sobre-el-cannabis-medicinal.html
/molluscum-contagiosum/es/about/index.html
/listeria/outbreaks/delimeats-7-24/locations.html		 all 3 pages (CSV)
aria-hidden element is not exposed to assistive technology [sia-r45] n/a 2 356 /brfss/acbs/2009/prevalence_tables/table14.html
/brfss/acbs/2012/prevalence_tables/table11b_LLCP.html		 all 2 pages (CSV)
Scrollable element is keyboard accessible [sia-r80] n/a 2 241 /pcd/collections/Implementation_Evaluation.htm
/pcd/issues/2015/2015_TOC.htm		 all 2 pages (CSV)
Button has accessible name [sia-r12] n/a 2 2 /stophivtogether/hiv-treatment/talk-treatment.html
/stophivtogether/prepared/index.html		 all 2 pages (CSV)
Table cell has header [sia-r77] n/a 1 20 /fluview/surveillance/2025-week-29.html all 1 pages (CSV)
Component with same name serves same purpose [sia-r90] n/a 1 1 /tobacco/campaign/tips/groups/military.html all 1 pages (CSV)
Element with orientation is not locked [sia-r59] n/a 1 1 /mmwr/volumes/66/wr/mm6620md.htm all 1 pages (CSV)
Form field error is identified and described [sia-r75] n/a 1 1 /mmwr/preview/mmwrhtml/mm6349a8.htm all 1 pages (CSV)

Unique accessibility issues (axe + Alfa consolidated)

axe and Alfa both implement W3C ACT rules, so the same issue is often caught by both. These are deduplicated by ACT rule and page, so a shared finding counts once (7661 raw engine findings → 7374 unique).

Unique issues (rule × page)
7374
Caught by both engines
286 highest confidence
axe only
4648
Alfa only
2440
8 rule type(s) caught by both engines — highest confidence

Two independent ACT-rule implementations (Deque axe-core and Siteimprove Alfa) flagged the same issue on the same pages. Agreement between separate engines is strong evidence the barrier is real, not a single-tool false positive — the best place to start.

Rules flagged by both axe-core and Alfa in 2026-W35, by pages affected.
IssuePagesRule references
Images must have alternative text366axe image-alt · Alfa sia-r2 · ACT 23a2a8
<html> element must have a lang attribute355axe html-has-lang · Alfa sia-r4 · ACT b5c3f8
Elements must only use permitted ARIA attributes218axe aria-prohibited-attr · Alfa sia-r18 · ACT 5c01ea
Links must have discernible text161axe link-name · Alfa sia-r11 · ACT c487ae
Form elements must have labels99axe label · Alfa sia-r8 · ACT e086e5
Headings should not be empty15axe empty-heading · Alfa sia-r64 · ACT ffd0e9
Table cell headers attributes must refer to other <th> elements in the same table8axe td-headers-attr · Alfa sia-r45 · ACT a25f45
ARIA commands must have an accessible name5axe aria-command-name · Alfa sia-r12 · ACT 97a4e1