vital-scans open quality ledger

www.cdc.gov: Accessibility — week 2026-W36

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) 800 2
1.1.1 Non-text Content (images, icons) 755 3
3.1.1 Language of Page 740 2
2.5.5 WCAG 2.5.5 729 1
1.4.6 WCAG 1.4.6 622 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 ~595 finding(s) on 595 page(s).
XPath / selector: html
<html>
 Serious 595 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 ~159 finding(s) on 159 page(s).
XPath / selector: .smallfield
<input class="smallfield" type="text" name="email" size="15" title="Insert e-mail" value="Insert e-mail" onfocus="this.value=''">
 Serious 159 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 ~644 finding(s) on 644 page(s).
XPath / selector: html
<html>
 Moderate 644 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 ~145 finding(s) on 145 page(s).
XPath / selector: <html>
 Moderate 145 Without vision, Limited cognitive, language, or learning ability Add a valid lang attribute to <html>. pages (CSV)
Page should contain a level-one heading · unattributed component
Fix one place, resolve ~113 finding(s) on 113 page(s).
XPath / selector: html
<html lang="en-us" class="cdc-theme-cdc cdc-page-type--content">
 Moderate 113 Requires manual testing. See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/page-has-heading-one?application=axeAPI pages (CSV)
Form elements must have labels · unattributed component
Fix one place, resolve ~165 finding(s) on 165 page(s).
XPath / selector: #searchBox
<input id="searchBox" class="searchBox" name="query" maxlength="256" type="text" style="width: 230px;">
 Critical 165 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)
Document should have one main landmark · unattributed component
Fix one place, resolve ~164 finding(s) on 164 page(s).
XPath / selector: #js
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" id="js">
 Moderate 164 Requires manual testing. Each page should have exactly one <main> landmark. pages (CSV)
Images must have alternative text · unattributed component
Fix one place, resolve ~422 finding(s) on 422 page(s).
XPath / selector: img[height="10"][alt=" "][src$="spacer.gif"]
<img src="../../images/spacer.gif" width="1" height="10" alt=" " border="0">
 Critical 422 Without vision, Limited vision, Limited cognitive, language, or learning ability Give every <img> a meaningful alt attribute. Use alt="" only for decorative images so screen readers skip them. pages (CSV)
Images must have alternative text · unattributed component
Fix one place, resolve ~833 finding(s) on 417 page(s).
XPath / selector: td[rowspan="2"][width="10"]:nth-child(1) > img[alt=" "][width="10"][src$="spacer.gif"]
<img src="../../images/spacer.gif" width="10" height="1" alt=" " border="0">
 Critical 417 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)
aria attribute is permitted for element role · unattributed component
Fix one place, resolve ~345 finding(s) on 345 page(s).
XPath / selector: @aria-label="Official website of the United States government"
 Moderate 345 Requires manual testing. Only use ARIA states/properties that are allowed on this element/role. pages (CSV)

Bug reports

36 issue type(s) are shown by default out of 79 total. Prioritized by severity, key pages, WCAG level, and prevalence; use the toggle to show everything.

Overall severity mix: 7 critical, 19 serious, 48 moderate, 5 minor. By WCAG category: 33 WCAG 2.0 A, 2 WCAG 2.0 AA, 1 WCAG 2.1 A, 1 WCAG 2.2 AA, 5 WCAG 2.x AAA, 19 Best Practice, 18 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; 29 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) 603/3331 pages · 6773 instances Likely template
Bug ID
VS-6ff36578
Pattern ID
VS-9074b4dd
Combined ID
VS-6ff36578 (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-W36 (13 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 603 of 3331 scanned pages (6773 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00018131.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 603 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) 595/3331 pages · 595 instances Likely template
Bug ID
VS-b74b6e3a
Pattern ID
VS-c126b6a6
Combined ID
VS-b74b6e3a (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-W36 (13 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 595 of 3331 scanned pages (595 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00018131.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 595 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) 580/3331 pages · 875 instances Likely template
Bug ID
VS-4e766972
Pattern ID
VS-be8d563e
Combined ID
VS-4e766972 (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
a[name="content_area"] > font[color="red"]
History
first seen 2026-W24, last seen 2026-W36 (13 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: </font>

Description

Elements must meet minimum color contrast ratio thresholds. Detected by axe-core rule color-contrast on 580 of 3331 scanned pages (875 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00018131.htm.
  2. Locate the element: a[name="content_area"] > 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 580 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) 232/3331 pages · 798 instances Likely template
Bug ID
VS-8532c1a2
Pattern ID
VS-e9fe47ac
Combined ID
VS-8532c1a2 (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
.no-decoration
History
first seen 2026-W24, last seen 2026-W36 (13 wk)

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

<a href="/niosh/docs/97-147/pdfs/97-147.pdf" target="_blank" rel="noopener noreferrer" class="no-decoration">

Description

Links must have discernible text. Detected by axe-core rule link-name on 232 of 3331 scanned pages (798 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/niosh/docs/97-147.
  2. Locate the element: .no-decoration
  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 232 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) 173/3331 pages · 174 instances Likely template
Bug ID
VS-76d92cee
Pattern ID
VS-fafffee0
Combined ID
VS-76d92cee (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-W36 (13 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 173 of 3331 scanned pages (174 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6419a2.htm?s_cid=mm6419a2_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 173 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) 81/3331 pages · 160 instances Likely template
Bug ID
VS-15247525
Pattern ID
VS-8ade3360
Combined ID
VS-15247525 (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-W36 (13 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 81 of 3331 scanned pages (160 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/firearm-violence/php/funded-research/current-awardees-rfa-ce-23-005.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

…and more — all 81 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/link-in-text-block?application=axeAPI

Serious axe scrollable-region-focusable WCAG 2.0 A Scrollable region must have keyboard access (WCAG 2.1.1) 43/3331 pages · 94 instances Likely template
Bug ID
VS-0aa78545
Pattern ID
VS-c613c153
Combined ID
VS-0aa78545 (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
.dataTables_scrollBody
History
first seen 2026-W24, last seen 2026-W36 (13 wk)

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

<div class="dataTables_scrollBody" style="position: relative; overflow: auto; max-height: 400px; width: 100%;">

Description

Scrollable region must have keyboard access. Detected by axe-core rule scrollable-region-focusable on 43 of 3331 scanned pages (94 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/hepatitis-surveillance-2022/hepatitis-c/table-3-5.html.
  2. Locate the element: .dataTables_scrollBody
  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

…and more — all 43 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: 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 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) 29/3331 pages · 35 instances Likely template
Bug ID
VS-d664cef2
Pattern ID
VS-07ba3b17
Combined ID
VS-d664cef2 (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-W36 (12 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 29 of 3331 scanned pages (35 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table7_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

…and more — all 29 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 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 frame-title WCAG 2.0 A Frames must have an accessible name (WCAG 4.1.2) 28/3331 pages · 40 instances Likely template
Bug ID
VS-2c674e9a
Pattern ID
VS-3f76c7ea
Combined ID
VS-2c674e9a (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[allowfullscreen="allowfullscreen"]
History
first seen 2026-W24, last seen 2026-W36 (13 wk)

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

<iframe src="//www.youtube-nocookie.com/embed/TL1hZ9RB5E0?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 28 of 3331 scanned pages (40 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/bring-your-brave/stories/cara.html.
  2. Locate the element: iframe[allowfullscreen="allowfullscreen"]
  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

…and more — all 28 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 <iframe> a descriptive title attribute.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/frame-title?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) 23/3331 pages · 35 instances Likely template
Bug ID
VS-a5207164
Pattern ID
VS-a0bdbdf6
Combined ID
VS-a5207164 (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
td[width="100%"][valign="top"] > ol[type="1"]
History
first seen 2026-W24, last seen 2026-W36 (13 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 23 of 3331 scanned pages (35 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm.
  2. Locate the element: td[width="100%"][valign="top"] > ol[type="1"]
  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 aria-command-name WCAG 2.0 A ARIA commands must have an accessible name (WCAG 4.1.2) 12/3331 pages · 122 instances Likely template
Bug ID
VS-ce5f1a90
Pattern ID
VS-5c82bd60
Combined ID
VS-ce5f1a90 (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=":r3:-heading-0"] > .sort-icon[role="button"]
History
first seen 2026-W24, last seen 2026-W36 (13 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 12 of 3331 scanned pages (122 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/hepatitis/statistics/2021surveillance/hepatitis-a/figure-1.4.htm.
  2. Locate the element: th[aria-labelledby=":r3:-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

Serious axe blink WCAG 2.0 A <blink> elements are deprecated and must not be used (WCAG 2.2.2) 12/3331 pages · 16 instances Likely template
Bug ID
VS-e29c3e1c
Pattern ID
VS-4b45acfe
Combined ID
VS-e29c3e1c (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-W36 (12 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 12 of 3331 scanned pages (16 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5632a6.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

Critical axe select-name WCAG 2.0 A Select element must have an accessible name (WCAG 4.1.2) 7/3331 pages · 14 instances
Bug ID
VS-947e4a1c
Pattern ID
VS-fab92378
Combined ID
VS-947e4a1c (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
#target
History
first seen 2026-W25, last seen 2026-W36 (12 wk)

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

<select id="target" name="countries">

Description

Select element must have an accessible name. Detected by axe-core rule select-name on 7 of 3331 scanned pages (14 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/global-hiv-tb/php/data/phia.html.
  2. Locate the element: #target
  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 nested-interactive WCAG 2.0 A Interactive controls must not be nested (WCAG 4.1.2) 6/3331 pages · 14 instances
Bug ID
VS-ab668554
Pattern ID
VS-58301a87
Combined ID
VS-ab668554 (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
#acc-header-2
History
first seen 2026-W24, last seen 2026-W36 (13 wk)

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

<div class="card-header h4 bg-white rounded-0 collapsed" role="tab" id="acc-header-2" href="#acc-panel-2" data-toggle="collapse" data-parent="#accordion-2" aria-controls="acc-panel-2" aria-expanded="f

Description

Interactive controls must not be nested. Detected by axe-core rule nested-interactive on 6 of 3331 scanned pages (14 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/tobacco/campaign/tips/spanish/poblaciones/cuidadores.html.
  2. Locate the element: #acc-header-2
  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

Serious axe listitem WCAG 2.0 A <li> elements must be contained in a <ul> or <ol> (WCAG 1.3.1) 5/3331 pages · 32 instances
Bug ID
VS-178f8027
Pattern ID
VS-6175596b
Combined ID
VS-178f8027 (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(1) > .table-col[data-col="2"][role="cell"] > li:nth-child(1)
History
first seen 2026-W24, last seen 2026-W36 (13 wk)

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

<li><a href="/physical-activity-basics/guidelines/children.html" class="">Recommendations</a></li>

Description

<li> elements must be contained in a <ul> or <ol>. Detected by axe-core rule listitem on 5 of 3331 scanned pages (32 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/physical-activity-basics/about/index.html.
  2. Locate the element: .table-row.row[role="row"]:nth-child(1) > .table-col[data-col="2"][role="cell"] > li:nth-child(1)
  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

Critical axe area-alt WCAG 2.0 A Active <area> elements must have alternative text (WCAG 2.4.4) 2/3331 pages · 12 instances Likely content
Bug ID
VS-056b8f48
Pattern ID
VS-4e469a59
Combined ID
VS-056b8f48 (pattern VS-4e469a59) — 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
area[onmouseover="stm(Text[1],Style[1])"]
History
first seen 2026-W28, last seen 2026-W36 (3 wk)

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

<area onmouseover="stm(Text[1],Style[1])" onmouseout="htm()" shape="polygon" href="#" target="_self" coords="290,76,243,67,243,45,336,45,336,67">

Description

Active <area> elements must have alternative text. Detected by axe-core rule area-alt on 2 of 3331 scanned pages (12 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/pcd/issues/2006/jan/05_0131.htm.
  2. Locate the element: area[onmouseover="stm(Text[1],Style[1])"]
  3. Confirm the axe-core finding for rule area-alt 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

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/area-alt?application=axeAPI

Critical axe button-name WCAG 2.0 A Buttons must have discernible text (WCAG 4.1.2) 2/3331 pages · 3 instances Likely content
Bug ID
VS-24a2547b
Pattern ID
VS-e7298c00
Combined ID
VS-24a2547b (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-W36 (9 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 2 of 3331 scanned pages (3 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/hiv/about/index.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 object-alt WCAG 2.0 A <object> elements must have alternative text (WCAG 1.1.1) 2/3331 pages · 2 instances Likely content
Bug ID
VS-f73ca2f7
Pattern ID
VS-f5a62bfa
Combined ID
VS-f73ca2f7 (pattern VS-f5a62bfa) — 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
object
History
first seen 2026-W36, last seen 2026-W36 (1 wk)

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

<object data="/obesity/media/images/2026/07/Effects-of-Obesity-SVG.svg" width="150" alt="Outline of female body with the health effects of obesity listed along the body from the top of the head to the

Description

<object> elements must have alternative text. Detected by axe-core rule object-alt on 2 of 3331 scanned pages (2 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/obesity/php/about/consequences.html.
  2. Locate the element: object
  3. Confirm the axe-core finding for rule object-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

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 <object> elements alternative text describing their content.

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

Critical axe aria-required-parent WCAG 2.0 A Certain ARIA roles must be contained by particular parents (WCAG 1.3.1) 1/3331 pages · 4 instances Likely content
Bug ID
VS-d3b11dae
Pattern ID
VS-f6d344d5
Combined ID
VS-d3b11dae (pattern VS-f6d344d5) — 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
div[data-post-id="10732"] > .p-0.bg-transparent.card-body > h4
History
first seen 2026-W29, last seen 2026-W36 (5 wk)

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

<h4 class="ui-accordion-header ui-helper-reset  ui-corner-top" tabindex="0" role="tab" aria-expanded="true">One-Host Ixodid Tick Life Cycle</h4>

Description

Certain ARIA roles must be contained by particular parents. Detected by axe-core rule aria-required-parent on 1 of 3331 scanned pages (4 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/dpdx/ticks/index.html.
  2. Locate the element: div[data-post-id="10732"] > .p-0.bg-transparent.card-body > h4
  3. Confirm the axe-core finding for rule aria-required-parent 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: Place this ARIA role inside its required parent role (e.g. an option must be inside a listbox).

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

Critical axe aria-required-children WCAG 2.0 A Certain ARIA roles must contain particular children (WCAG 1.3.1) 1/3331 pages · 2 instances Likely content
Bug ID
VS-df8bc071
Pattern ID
VS-9429bb8d
Combined ID
VS-df8bc071 (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
.cdc-content-table
History
first seen 2026-W25, last seen 2026-W36 (11 wk)

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

<div class="cdc-content-table header-column" role="table" aria-label="table">

Description

Certain ARIA roles must contain particular children. Detected by axe-core rule aria-required-children on 1 of 3331 scanned pages (2 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/vision-health-data/case-definitions/functional-limitations.html.
  2. Locate the element: .cdc-content-table
  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

Serious axe document-title WCAG 2.0 A Documents must have <title> element to aid in navigation (WCAG 2.4.2) 1/3331 pages · 1 instances Likely content
Bug ID
VS-bd5cfff3
Pattern ID
VS-c80d5faa
Combined ID
VS-bd5cfff3 (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
html
History
first seen 2026-W25, last seen 2026-W36 (8 wk)

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

<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xml

Description

Documents must have <title> element to aid in navigation. Detected by axe-core rule document-title on 1 of 3331 scanned pages (1 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/nchs/nvss/manuals/2e2021vol3.htm.
  2. Locate the element: html
  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) 1/3331 pages · 1 instances Likely content
Bug ID
VS-123126f9
Pattern ID
VS-ebb1c464
Combined ID
VS-123126f9 (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
#UNIQUE27403686429c066f58
History
first seen 2026-W28, last seen 2026-W36 (9 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="UNIQUE27403686429c066f58" aria-label="Carousel">

Description

Elements must only use permitted ARIA attributes. Detected by axe-core rule aria-prohibited-attr on 1 of 3331 scanned pages (1 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/stophivtogether/hiv-treatment/index.html?s_cid=so_togetherconsumertk0194.
  2. Locate the element: #UNIQUE27403686429c066f58
  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) 2955/3331 pages · 92097 instances Likely template
Bug ID
VS-b1b40bf0
Pattern ID
VS-f18df681
Combined ID
VS-b1b40bf0 (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
#homeward
History
first seen 2026-W24, last seen 2026-W36 (13 wk)

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

<span id="homeward"><a href="https://www.cdc.gov/" title="Return to the CDC Home Page">CDC Home</a></span>

Description

All page content should be contained by landmarks. Detected by axe-core rule region on 2955 of 3331 scanned pages (92097 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6419a2.htm?s_cid=mm6419a2_w.
  2. Locate the element: #homeward
  3. Confirm the axe-core finding for rule region.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 2955 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) 159/3331 pages · 159 instances Likely template
Bug ID
VS-03c63719
Pattern ID
VS-33841929
Combined ID
VS-03c63719 (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-W36 (13 wk)

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

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

Description

Form elements should have a visible label. Detected by axe-core rule label-title-only on 159 of 3331 scanned pages (159 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/pcd/issues/2007/oct/06_0179.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 159 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 tabindex Best Practice Elements should not have tabindex greater than zero (WCAG criterion undetermined) 1/3331 pages · 3 instances Likely content
Bug ID
VS-f75f2d48
Pattern ID
VS-7430f84c
Combined ID
VS-f75f2d48 (pattern VS-7430f84c) — 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
a[href$="#content"]
History
first seen 2026-W24, last seen 2026-W36 (6 wk)

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

<a class="skippy visually-hidden-focusable" href="#content" tabindex="1">Ir al contenido del sitio</a>

Description

Elements should not have tabindex greater than zero. Detected by axe-core rule tabindex on 1 of 3331 scanned pages (3 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/spanish/index.html.
  2. Locate the element: a[href$="#content"]
  3. Confirm the axe-core finding for rule tabindex.

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: Avoid tabindex values greater than 0; they create a confusing tab order.

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

Serious axe aria-dialog-name Best Practice ARIA dialog and alertdialog nodes should have an accessible name (WCAG criterion undetermined) 1/3331 pages · 1 instances Likely content
Bug ID
VS-1b762b97
Pattern ID
VS-fa724f90
Combined ID
VS-1b762b97 (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
#contentwarningindex
History
first seen 2026-W29, last seen 2026-W36 (7 wk)

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

<div class="modal fade show" id="contentwarningindex" tabindex="-1" role="dialog" aria-labelledby="contentwarningindexLabel" aria-modal="true" style="display: block;">

Description

ARIA dialog and alertdialog nodes should have an accessible name. Detected by axe-core rule aria-dialog-name on 1 of 3331 scanned pages (1 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/wtc/exhibition/index.html.
  2. Locate the element: #contentwarningindex
  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) 268/3331 pages · 2804 instances Likely template
Bug ID
VS-94ae261b
Pattern ID
VS-179ad9b3
Combined ID
VS-94ae261b (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="#content_area">
History
first seen 2026-W24, last seen 2026-W36 (13 wk)

Description

Target size is at least 24×24 CSS pixels or has spacing (Minimum). Detected by Siteimprove Alfa rule sia-r113 on 268 of 3331 scanned pages (2804 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm.
  2. Locate the element: <a href="#content_area">
  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 268 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) 220/3331 pages · 1266 instances Likely template
Bug ID
VS-11a69900
Pattern ID
VS-f7e99f4b
Combined ID
VS-11a69900 (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: "Previous CRSCI Grant Recipients"
History
first seen 2026-W24, last seen 2026-W36 (13 wk)

Description

Text has sufficient color contrast (Enhanced). Detected by Siteimprove Alfa rule sia-r69 on 220 of 3331 scanned pages (1266 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/climate-health/php/climate_ready/grant-recipients.html.
  2. Locate the element: text: "Previous CRSCI Grant Recipients"
  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 220 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) 150/3331 pages · 1662 instances Likely template
Bug ID
VS-14a006ef
Pattern ID
VS-a24eaa8c
Combined ID
VS-14a006ef (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-W36 (13 wk)

Description

Image has accessible name. Detected by Siteimprove Alfa rule sia-r2 on 150 of 3331 scanned pages (1662 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.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 150 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) 145/3331 pages · 145 instances Likely template
Bug ID
VS-802b904b
Pattern ID
VS-7a0e5645
Combined ID
VS-802b904b (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-W36 (13 wk)

Description

Document has a valid lang attribute. Detected by Siteimprove Alfa rule sia-r4 on 145 of 3331 scanned pages (145 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.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 145 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) 81/3331 pages · 831 instances Likely template
Bug ID
VS-85f49df9
Pattern ID
VS-d6097011
Combined ID
VS-85f49df9 (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-W36 (13 wk)

Description

Presentational children of an element are not focusable. Detected by Siteimprove Alfa rule sia-r68 on 81 of 3331 scanned pages (831 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/niosh/fatigue/about.
  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 81 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) 81/3331 pages · 148 instances Likely template
Bug ID
VS-c772ba06
Pattern ID
VS-f7dba940
Combined ID
VS-c772ba06 (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 href="/antimicrobial-resistance-laboratory-networks/php/about/index.html" class="cdc-footer__super-title" aria-label="Antimicrobial Resistance Laboratory Networks">
History
first seen 2026-W24, last seen 2026-W36 (13 wk)

Description

Accessible name of link or button matches visible label. Detected by Siteimprove Alfa rule sia-r14 on 81 of 3331 scanned pages (148 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/antimicrobial-resistance-laboratory-networks/site.html.
  2. Locate the element: <a href="/antimicrobial-resistance-laboratory-networks/php/about/index.html" class="cdc-footer__super-title" aria-label="Antimicrobial Resistance Laboratory Networks">
  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 81 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) 62/3331 pages · 189 instances Likely template
Bug ID
VS-07ad477a
Pattern ID
VS-28ebd979
Combined ID
VS-07ad477a (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="/niosh/docs/97-147/pdfs/97-147.pdf" target="_blank" rel="noopener noreferrer" class="no-decoration">
History
first seen 2026-W24, last seen 2026-W36 (13 wk)

Description

Link has accessible name. Detected by Siteimprove Alfa rule sia-r11 on 62 of 3331 scanned pages (189 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/niosh/docs/97-147.
  2. Locate the element: <a href="/niosh/docs/97-147/pdfs/97-147.pdf" target="_blank" rel="noopener noreferrer" class="no-decoration">
  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 62 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) 47/3331 pages · 71 instances Likely template
Bug ID
VS-33b17917
Pattern ID
VS-a48e6078
Combined ID
VS-33b17917 (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-W36 (13 wk)

Description

Form field has accessible name. Detected by Siteimprove Alfa rule sia-r8 on 47 of 3331 scanned pages (71 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6422a4.htm?s_cid=mm6422a4_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 47 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 alfa sia-r46 WCAG 2.0 A Element has required aria-owns (WCAG 1.3.1) 13/3331 pages · 219 instances Likely template
Bug ID
VS-2d2125d0
Pattern ID
VS-4408605e
Combined ID
VS-2d2125d0 (pattern VS-4408605e) — 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
<th class="left" valign="top" colspan="1" align="left">
History
first seen 2026-W25, last seen 2026-W36 (12 wk)

Description

Element has required aria-owns. Detected by Siteimprove Alfa rule sia-r46 on 13 of 3331 scanned pages (219 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/pcd/issues/2013/12_0317.htm.
  2. Locate the element: <th class="left" valign="top" colspan="1" align="left">
  3. Confirm the Siteimprove Alfa finding for rule sia-r46 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: 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-r46

Moderate alfa sia-r77 WCAG 2.0 A Table cell has header (WCAG 1.3.1) 10/3331 pages · 3200 instances · possible duplicate Likely template
Bug ID
VS-6394d446
Pattern ID
VS-3f067795
Combined ID
VS-6394d446 (pattern VS-3f067795) — 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
<td scope="row" class="infrequent-end-table-title" colspan="16">
History
first seen 2026-W24, last seen 2026-W36 (13 wk)
Possible duplicate
Same WCAG SC covered by axe report VS-178f8027 (pattern VS-6175596b). If axe and this engine flag the same element, the axe report takes precedence — mark this as duplicate in JIRA.

Description

Table cell has header. Detected by Siteimprove Alfa rule sia-r77 on 10 of 3331 scanned pages (3200 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6040md.htm?s_cid=mm6040md_w.
  2. Locate the element: <td scope="row" class="infrequent-end-table-title" colspan="16">
  3. Confirm the Siteimprove Alfa finding for rule sia-r77 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: 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-r77

Moderate axe heading-order Best Practice Heading levels should only increase by one (WCAG criterion undetermined) 918/3331 pages · 1260 instances Likely template
Bug ID
VS-51ddcf4d
Pattern ID
VS-d25f622d
Combined ID
VS-51ddcf4d (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
h3:nth-child(11)
History
first seen 2026-W24, last seen 2026-W36 (13 wk)

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

<h3>Editorial Note</h3>

Description

Heading levels should only increase by one. Detected by axe-core rule heading-order on 918 of 3331 scanned pages (1260 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm.
  2. Locate the element: h3:nth-child(11)
  3. Confirm the axe-core finding for rule heading-order.

Impact

Not captured by automated scan — requires manual testing.

Affected pages

…and more — all 918 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-unique Best Practice Landmarks should have a unique role or role/label/title (i.e. accessible name) c (WCAG criterion undetermined) 856/3331 pages · 885 instances Likely template
Bug ID
VS-5ce98ec8
Pattern ID
VS-8806389c
Combined ID
VS-5ce98ec8 (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-W36 (13 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 856 of 3331 scanned pages (885 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/hiv-data/archive/index.html.
  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 856 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 axe landmark-one-main Best Practice Document should have one main landmark (WCAG criterion undetermined) 811/3331 pages · 811 instances Likely template
Bug ID
VS-6361fc9f
Pattern ID
VS-d5d82446
Combined ID
VS-6361fc9f (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
#js
History
first seen 2026-W24, last seen 2026-W36 (13 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

Document should have one main landmark. Detected by axe-core rule landmark-one-main on 811 of 3331 scanned pages (811 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6419a2.htm?s_cid=mm6419a2_w.
  2. Locate the element: #js
  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 811 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 alfa sia-r111 WCAG 2.x AAA Target size is at least 44×44 CSS pixels (Enhanced) (WCAG 2.5.5) 729/3331 pages · 22183 instances Likely template
Bug ID
VS-caa43316
Pattern ID
VS-cb53cc4d
Combined ID
VS-caa43316 (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 href="#content_area">
History
first seen 2026-W24, last seen 2026-W36 (13 wk)

Description

Target size is at least 44×44 CSS pixels (Enhanced). Detected by Siteimprove Alfa rule sia-r111 on 729 of 3331 scanned pages (22183 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm.
  2. Locate the element: <a href="#content_area">
  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 729 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) 622/3331 pages · 19873 instances Likely template
Bug ID
VS-e3e7afc2
Pattern ID
VS-646b1e0b
Combined ID
VS-e3e7afc2 (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-W36 (13 wk)

Description

Text has enhanced contrast. Detected by Siteimprove Alfa rule sia-r66 on 622 of 3331 scanned pages (19873 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/niosh/docs/97-147.
  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 622 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) 529/3331 pages · 7974 instances Likely template
Bug ID
VS-7d313750
Pattern ID
VS-c18be945
Combined ID
VS-7d313750 (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-W36 (13 wk)

Description

Scrolling content can be accessed by keyboard. Detected by Siteimprove Alfa rule sia-r57 on 529 of 3331 scanned pages (7974 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/niosh/docs/97-147.
  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 529 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) 366/3331 pages · 370 instances Likely template
Bug ID
VS-33fd132f
Pattern ID
VS-e05344b9
Combined ID
VS-33fd132f (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-W36 (13 wk)

Description

aria attribute is permitted for element role. Detected by Siteimprove Alfa rule sia-r18 on 366 of 3331 scanned pages (370 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/niosh/docs/97-147.
  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 366 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) 293/3331 pages · 12898 instances Likely template
Bug ID
VS-18a4b2a4
Pattern ID
VS-fbf54eba
Combined ID
VS-18a4b2a4 (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 style="font-family: Arial, Helvetica, sans-serif; font-size: 8pt; color: #333333;">
History
first seen 2026-W24, last seen 2026-W36 (13 wk)

Description

Link is distinguishable without relying on color. Detected by Siteimprove Alfa rule sia-r74 on 293 of 3331 scanned pages (12898 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm.
  2. Locate the element: <p style="font-family: Arial, Helvetica, sans-serif; font-size: 8pt; color: #333333;">
  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 293 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) 250/3331 pages · 113831 instances Likely template
Bug ID
VS-087b2d99
Pattern ID
VS-2208081b
Combined ID
VS-087b2d99 (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-W36 (13 wk)

Description

Text has minimum contrast ratio of 4.5:1. Detected by Siteimprove Alfa rule sia-r73 on 250 of 3331 scanned pages (113831 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.htm.
  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 250 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) 231/3331 pages · 327 instances Likely template
Bug ID
VS-fea5b1db
Pattern ID
VS-f054f4a4
Combined ID
VS-fea5b1db (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-W36 (13 wk)

Description

Headings are structured hierarchically. Detected by Siteimprove Alfa rule sia-r53 on 231 of 3331 scanned pages (327 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.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 231 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) 177/3331 pages · 177 instances Likely template
Bug ID
VS-08cb3cbc
Pattern ID
VS-3d033717
Combined ID
VS-08cb3cbc (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-W36 (13 wk)

Description

No obsolete or deprecated elements are used. Detected by Siteimprove Alfa rule sia-r70 on 177 of 3331 scanned pages (177 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000239.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 177 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) 140/3331 pages · 151 instances Likely template
Bug ID
VS-d61611be
Pattern ID
VS-4fac2f41
Combined ID
VS-d61611be (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
.btn-srch
History
first seen 2026-W24, last seen 2026-W36 (13 wk)

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

<button role="search" type="submit" class="btn-srch" aria-label="Search" style="right: -8px;"><i class="fas fa-search"></i></button>

Description

ARIA role should be appropriate for the element. Detected by axe-core rule aria-allowed-role on 140 of 3331 scanned pages (151 instances).

Steps to reproduce

  1. Open https://www.cdc.gov/wtc/designated_representative.html.
  2. Locate the element: .btn-srch
  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 140 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 axe page-has-heading-one Best Practice Page should contain a level-one heading (WCAG criterion undetermined) 113/3331 pages · 113 instances Likely template
Bug ID
VS-346046fd
Pattern ID
VS-fa44f293
Combined ID
VS-346046fd (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-W36 (13 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--content">

Description

Page should contain a level-one heading. Detected by axe-core rule page-has-heading-one on 113 of 3331 scanned pages (113 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/antimicrobial-resistance-laboratory-networks/site.html.
  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 113 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 deprecated-html presentational-attr Undetermined Presentational attribute (use CSS) (WCAG criterion undetermined) 91/3331 pages · 14425 instances Likely template
Bug ID
VS-67e722a7
Pattern ID
VS-04a9d28c
Combined ID
VS-67e722a7 (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-W36 (13 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 91 of 3331 scanned pages (14425 instances).

Steps to reproduce

  1. Open http://www.cdc.gov/mmwr/preview/mmwrhtml/00047303.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 91 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.

29 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 Form field label is visible (WCAG criterion undetermined) [sia-r61] Undetermined 78
Minor Table header text should not be empty (WCAG criterion undetermined) [empty-table-header] Best Practice 74
Moderate Obsolete <font> element (use CSS) (WCAG criterion undetermined) [font-element] Undetermined 55
Moderate Table header has scope (WCAG criterion undetermined) [sia-r78] Undetermined 52
Moderate Obsolete <big> element (use CSS) (WCAG criterion undetermined) [big-element] Undetermined 41
Minor Headings should not be empty (WCAG criterion undetermined) [empty-heading] Best Practice 23
Moderate scope attribute should be used correctly (WCAG criterion undetermined) [scope-attr-valid] Best Practice 22
Moderate Obsolete <center> element (use CSS) (WCAG criterion undetermined) [center-element] Undetermined 20
Moderate Input purpose can be determined (WCAG criterion undetermined) [sia-r60] Undetermined 11
Moderate Duplicate role landmark is labeled (WCAG criterion undetermined) [sia-r79] Undetermined 10
Moderate aria-hidden element is not exposed to assistive technology (WCAG 1.3.1) [sia-r45] WCAG 2.0 A 8
Moderate The skip-link target should exist and be focusable (WCAG criterion undetermined) [skip-link] Best Practice 8
Moderate Tables are used for tabular data, not layout (WCAG criterion undetermined) [sia-r40] Undetermined 6
Moderate Element has required owned roles (WCAG 1.3.1) [sia-r64] WCAG 2.0 A 4
Moderate Element with orientation is not locked (WCAG criterion undetermined) [sia-r59] Undetermined 4
Moderate Document should not have more than one banner landmark (WCAG criterion undetermined) [landmark-no-duplicate-banner] Best Practice 3
Moderate Info and Relationships (WCAG 1.3.1) [sia-r76] WCAG 2.0 A 2
Moderate Form field error is identified and described (WCAG criterion undetermined) [sia-r75] Undetermined 2
Moderate First focusable element is link to main content (WCAG criterion undetermined) [sia-r87] Undetermined 2
Minor Alternative text of images should not be repeated as text (WCAG criterion undetermined) [image-redundant-alt] Best Practice 2
Moderate Button has accessible name (WCAG 4.1.2) [sia-r12] WCAG 2.0 A 1
Moderate Assertive live region is marked as atomic (WCAG criterion undetermined) [sia-r54] Undetermined 1
Moderate Banner landmark should not be contained in another landmark (WCAG criterion undetermined) [landmark-banner-is-top-level] Best Practice 1
Moderate Contentinfo landmark should not be contained in another landmark (WCAG criterion undetermined) [landmark-contentinfo-is-top-level] Best Practice 1
Moderate Document should not have more than one contentinfo landmark (WCAG criterion undetermined) [landmark-no-duplicate-contentinfo] Best Practice 1
Moderate Link in text block is visually distinguishable without color (WCAG 1.4.1) [sia-r62] WCAG 2.0 A 1
Moderate Obsolete <blink> element (WCAG criterion undetermined) [blink-element] Undetermined 1
Moderate Scrollable element is keyboard accessible (WCAG 1.4.8) [sia-r80] WCAG 2.x AAA 1
Minor Tables should not have the same summary and caption (WCAG criterion undetermined) [table-duplicate-name] Best Practice 1

Deque axe-core findings

Rule-level axe-core summary (41 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-W36, by pages affected
RuleImpactPages affectedInstancesExample pagesAll affected
All page content should be contained by landmarks [region] moderate 2955 92097 /mmwr/preview/mmwrhtml/mm6419a2.htm
/mmwr/preview/mmwrhtml/00018131.htm
/hiv-data/archive/index.html		 all 2955 pages (CSV)
Heading levels should only increase by one [heading-order] moderate 918 1260 /mmwr/preview/mmwrhtml/00000239.htm
/niosh/nmam/nmam4th/default.html
/mmwr/preview/mmwrhtml/00018168.htm		 all 918 pages (CSV)
Landmarks should have a unique role or role/label/title (i.e. accessible name) combination [landmark-unique] moderate 856 885 /hiv-data/archive/index.html
/niosh/topics/nanotech
/international-infection-control/php/stories/global-fund-ipc.html		 all 856 pages (CSV)
Document should have one main landmark [landmark-one-main] moderate 811 811 /mmwr/preview/mmwrhtml/mm6419a2.htm
/mmwr/preview/mmwrhtml/00018131.htm
/mmwr/preview/mmwrhtml/00000239.htm		 all 811 pages (CSV)
Images must have alternative text [image-alt] critical 603 6773 /mmwr/preview/mmwrhtml/00018131.htm
/mmwr/preview/mmwrhtml/00000239.htm
/mmwr/preview/mmwrhtml/00018168.htm		 all 603 pages (CSV)
<html> element must have a lang attribute [html-has-lang] serious 595 595 /mmwr/preview/mmwrhtml/00018131.htm
/mmwr/preview/mmwrhtml/00000239.htm
/mmwr/preview/mmwrhtml/00018168.htm		 all 595 pages (CSV)
Elements must meet minimum color contrast ratio thresholds [color-contrast] serious 580 875 /mmwr/preview/mmwrhtml/00018131.htm
/mmwr/preview/mmwrhtml/00000239.htm
/mmwr/preview/mmwrhtml/00018168.htm		 all 580 pages (CSV)
Links must have discernible text [link-name] serious 232 798 /niosh/docs/97-147
/mmwr/preview/mmwrhtml/mm5632a6.htm
/pcd/issues/2007/oct/06_0179.htm		 all 232 pages (CSV)
Form elements must have labels [label] critical 173 174 /mmwr/preview/mmwrhtml/mm6419a2.htm
/mmwr/preview/mmwrhtml/mm6448md.htm
/mmwr/preview/mmwrhtml/mm6024a2.htm		 all 173 pages (CSV)
Form elements should have a visible label [label-title-only] serious 159 159 /pcd/issues/2007/oct/06_0179.htm
/pcd/issues/2005/apr/04_0135_zht.htm
/pcd/issues/2007/oct/06_0159_es.htm		 all 159 pages (CSV)
ARIA role should be appropriate for the element [aria-allowed-role] minor 140 151 /wtc/designated_representative.html
/niosh/docs/97-147
/niosh/publications/es/numbered/2001-111sp.html		 all 140 pages (CSV)
Page should contain a level-one heading [page-has-heading-one] moderate 113 113 /antimicrobial-resistance-laboratory-networks/site.html
/creutzfeldt-jakob/site.html
/healthyyouth/data/yrbs		 all 113 pages (CSV)
Links must be distinguishable without relying on color [link-in-text-block] serious 81 160 /firearm-violence/php/funded-research/current-awardees-rfa-ce-23-005.html
/hepatitis-surveillance-2022/hepatitis-c/table-3-5.html
/hepatitis/statistics/2021surveillance/hepatitis-a/figure-1.4.htm		 all 81 pages (CSV)
Table header text should not be empty [empty-table-header] minor 74 476 /school-health-profiles/methods/2022-response-rate.html
/acip/grade/influenza-older-adults.html
/asthma/nhis/2014/table2-2.htm		 all 74 pages (CSV)
Scrollable region must have keyboard access [scrollable-region-focusable] serious 43 94 /hepatitis-surveillance-2022/hepatitis-c/table-3-5.html
/mmwr/volumes/66/wr/mm6621a3.htm
/vaccines/acip/recs/grade/pneumo-PCV20-age-based.html		 all 43 pages (CSV)
Table cell headers attributes must refer to other <th> elements in the same table [td-headers-attr] serious 29 35 /brfss/acbs/2012/prevalence_tables/table7_LLCP.html
/vaccines/acip/recs/grade/pneumo-PCV20-age-based.html
/acip/grade/influenza-older-adults.html		 all 29 pages (CSV)
Frames must have an accessible name [frame-title] serious 28 40 /bring-your-brave/stories/cara.html
/coca/hcp/trainings/patients-long-covid-return-work.html
/diabetes-ndwp/audio-video/index.html		 all 28 pages (CSV)
<ul> and <ol> must only directly contain <li>, <script> or <template> elements [list] serious 23 35 /mmwr/preview/mmwrhtml/00000239.htm
/wtc/designated_representative.html
/mmwr/preview/mmwrhtml/00038679.htm		 all 23 pages (CSV)
Headings should not be empty [empty-heading] minor 23 31 /niosh/nmam/nmam4th/default.html
/mmwr/preview/mmwrhtml/rr4901a2.htm
/mmwr/preview/mmwrhtml/rr5509a1.htm		 all 23 pages (CSV)
scope attribute should be used correctly [scope-attr-valid] moderate 22 245 /tb-surveillance-report-2023/tables/table-5.html
/flu/hcp/antivirals/summary-clinicians.html
/flu-vaccines-work/php/effectiveness-studies/2021-2022.html		 all 22 pages (CSV)
ARIA commands must have an accessible name [aria-command-name] serious 12 122 /hepatitis/statistics/2021surveillance/hepatitis-a/figure-1.4.htm
/hepatitis/statistics/2020surveillance/hepatitis-c/figure-3.7.htm
/listeria/outbreaks/monocytogenes-06-22/timeline.html		 all 12 pages (CSV)
<blink> elements are deprecated and must not be used [blink] serious 12 16 /mmwr/preview/mmwrhtml/mm5632a6.htm
/mmwr/preview/mmwrhtml/mm4843a2.htm
/mmwr/preview/mmwrhtml/rr5413a1.htm		 all 12 pages (CSV)
The skip-link target should exist and be focusable [skip-link] moderate 8 8 /niosh/mining/works/coversheet698.html
/pcd/issues/2014/14_0123_es.htm
/pcd/issues/2013/12_0244_es.htm		 all 8 pages (CSV)
Select element must have an accessible name [select-name] critical 7 14 /global-hiv-tb/php/data/phia.html
/mmwr/preview/mmwrhtml/mm6339a4.htm
/mmwr/preview/mmwrhtml/mm6341a3.htm		 all 7 pages (CSV)
Interactive controls must not be nested [nested-interactive] serious 6 14 /tobacco/campaign/tips/spanish/poblaciones/cuidadores.html
/diabetes/burden-toolkit/state-burden-toolkit-mortality.html
/stophivtogether/hiv-treatment/index.html		 all 6 pages (CSV)
<li> elements must be contained in a <ul> or <ol> [listitem] serious 5 32 /physical-activity-basics/about/index.html
/mmwr/preview/mmwrhtml/mm5215a1.htm
/nchhstp/budget-funding/policy-as-public-health-intervention-hiv-viral-hepatitis-stds-tb.html		 all 5 pages (CSV)
Document should not have more than one banner landmark [landmark-no-duplicate-banner] moderate 3 3 /kdss
/laboratory/sada/index.html
/spanish/index.html		 all 3 pages (CSV)
Active <area> elements must have alternative text [area-alt] critical 2 12 /pcd/issues/2006/jan/05_0131.htm
/pcd/issues/2005/jan/04_0081.htm		 all 2 pages (CSV)
Alternative text of images should not be repeated as text [image-redundant-alt] minor 2 4 /laboratory/sada/index.html
/spanish/index.html		 all 2 pages (CSV)
Buttons must have discernible text [button-name] critical 2 3 /hiv/about/index.html
/global-hiv-tb/php/globalhiv/vitalsigns.html		 all 2 pages (CSV)
<object> elements must have alternative text [object-alt] serious 2 2 /obesity/php/about/consequences.html
/obesity/basics/consequences.html		 all 2 pages (CSV)
Certain ARIA roles must be contained by particular parents [aria-required-parent] critical 1 4 /dpdx/ticks/index.html all 1 pages (CSV)
Elements should not have tabindex greater than zero [tabindex] serious 1 3 /spanish/index.html all 1 pages (CSV)
Certain ARIA roles must contain particular children [aria-required-children] critical 1 2 /vision-health-data/case-definitions/functional-limitations.html all 1 pages (CSV)
Tables should not have the same summary and caption [table-duplicate-name] minor 1 1 /flu/hcp/antivirals/summary-clinicians.html all 1 pages (CSV)
Documents must have <title> element to aid in navigation [document-title] serious 1 1 /nchs/nvss/manuals/2e2021vol3.htm all 1 pages (CSV)
Banner landmark should not be contained in another landmark [landmark-banner-is-top-level] moderate 1 1 /laboratory/sada/index.html all 1 pages (CSV)
Elements must only use permitted ARIA attributes [aria-prohibited-attr] serious 1 1 /stophivtogether/hiv-treatment/index.html all 1 pages (CSV)
Contentinfo landmark should not be contained in another landmark [landmark-contentinfo-is-top-level] moderate 1 1 /spanish/index.html all 1 pages (CSV)
Document should not have more than one contentinfo landmark [landmark-no-duplicate-contentinfo] moderate 1 1 /spanish/index.html all 1 pages (CSV)
ARIA dialog and alertdialog nodes should have an accessible name [aria-dialog-name] serious 1 1 /wtc/exhibition/index.html all 1 pages (CSV)

Siteimprove Alfa findings

Rule-level Alfa summary (33 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-W36, by pages affected
RuleImpactPages affectedInstancesExample pagesAll affected
Target size is at least 44×44 CSS pixels (Enhanced) [sia-r111] n/a 729 22183 /mmwr/preview/mmwrhtml/00000239.htm
/niosh/docs/97-147
/niosh/fatigue/about		 all 729 pages (CSV)
Text has enhanced contrast [sia-r66] n/a 622 19873 /niosh/docs/97-147
/niosh/fatigue/about
/mmwr/volumes/71/wr/mm7115a3.htm		 all 622 pages (CSV)
Scrolling content can be accessed by keyboard [sia-r57] n/a 529 7974 /niosh/docs/97-147
/niosh/fatigue/about
/mmwr/volumes/71/wr/mm7115a3.htm		 all 529 pages (CSV)
aria attribute is permitted for element role [sia-r18] n/a 366 370 /niosh/docs/97-147
/niosh/fatigue/about
/climate-health/php/climate_ready/grant-recipients.html		 all 366 pages (CSV)
Link is distinguishable without relying on color [sia-r74] n/a 293 12898 /mmwr/preview/mmwrhtml/00000239.htm
/niosh/docs/97-147
/niosh/fatigue/about		 all 293 pages (CSV)
Target size is at least 24×24 CSS pixels or has spacing (Minimum) [sia-r113] n/a 268 2804 /mmwr/preview/mmwrhtml/00000239.htm
/mmwr/preview/mmwrhtml/00018168.htm
/mmwr/preview/mmwrhtml/00038679.htm		 all 268 pages (CSV)
Text has minimum contrast ratio of 4.5:1 [sia-r73] n/a 250 113831 /mmwr/preview/mmwrhtml/00000239.htm
/mmwr/preview/mmwrhtml/00018168.htm
/pcd/issues/2022/21_0425.htm		 all 250 pages (CSV)
Headings are structured hierarchically [sia-r53] n/a 231 327 /mmwr/preview/mmwrhtml/00000239.htm
/mmwr/preview/mmwrhtml/00018168.htm
/mmwr/volumes/71/wr/mm7115a3.htm		 all 231 pages (CSV)
Text has sufficient color contrast (Enhanced) [sia-r69] n/a 220 1266 /climate-health/php/climate_ready/grant-recipients.html
/readiness/php/data-research/connecticut-funding.html
/infrastructure/public-health-systems-emerging-practices/national-public-health-performance-standards.html		 all 220 pages (CSV)
No obsolete or deprecated elements are used [sia-r70] n/a 177 177 /mmwr/preview/mmwrhtml/00000239.htm
/mmwr/preview/mmwrhtml/00018168.htm
/mmwr/preview/mmwrhtml/00038679.htm		 all 177 pages (CSV)
Image has accessible name [sia-r2] n/a 150 1662 /mmwr/preview/mmwrhtml/00000239.htm
/mmwr/preview/mmwrhtml/00018168.htm
/mmwr/preview/mmwrhtml/00038679.htm		 all 150 pages (CSV)
Document has a valid lang attribute [sia-r4] n/a 145 145 /mmwr/preview/mmwrhtml/00000239.htm
/mmwr/preview/mmwrhtml/00018168.htm
/mmwr/preview/mmwrhtml/00038679.htm		 all 145 pages (CSV)
Presentational children of an element are not focusable [sia-r68] n/a 81 831 /niosh/fatigue/about
/typhoid-fever/hcp/clinical-overview/index.html
/pcd/issues/2013/12_0317.htm		 all 81 pages (CSV)
Accessible name of link or button matches visible label [sia-r14] n/a 81 148 /antimicrobial-resistance-laboratory-networks/site.html
/mosquitoes/es/during-an-outbreak/lo-que-usted-puede-hacer-para-controlar-los-mosquitos-durante-un-brote.html
/cronobacter/communication-resources/vlog-preventing-cronobacter-in-infants.html		 all 81 pages (CSV)
Form field label is visible [sia-r61] n/a 78 78 /antimicrobial-resistance-laboratory-networks/site.html
/pcd/issues/2013/12_0317.htm
/pcd/issues/2013/13_0202.htm		 all 78 pages (CSV)
Link has accessible name [sia-r11] n/a 62 189 /niosh/docs/97-147
/pcd/issues/2008/oct/07_0173_fr.htm
/pcd/issues/2013/12_0317.htm		 all 62 pages (CSV)
Table header has scope [sia-r78] n/a 52 75 /mmwr/volumes/66/wr/mm6621a3.htm
/mmwr/preview/mmwrhtml/rr4901a2.htm
/pcd/issues/2013/12_0317.htm		 all 52 pages (CSV)
Form field has accessible name [sia-r8] n/a 47 71 /mmwr/preview/mmwrhtml/mm6422a4.htm
/mmwr/preview/mmwrhtml/mm6040md.htm
/mmwr/preview/mmwrhtml/mm6128a3.htm		 all 47 pages (CSV)
Element has required aria-owns [sia-r46] n/a 13 219 /pcd/issues/2013/12_0317.htm
/brfss/acbs/2012/prevalence_tables/table3a_LLCP.html
/brfss/acbs/2018/prevalence_tables/table5_LLCP.html		 all 13 pages (CSV)
Input purpose can be determined [sia-r60] n/a 11 12 /pcd/issues/2013/12_0317.htm
/pcd/issues/2013/13_0202.htm
/mmwr/preview/mmwrhtml/mm5913a4.htm		 all 11 pages (CSV)
Table cell has header [sia-r77] n/a 10 3200 /mmwr/preview/mmwrhtml/mm6040md.htm
/mmwr/preview/mmwrhtml/mm6253a1.htm
/asthma/nhis/2018/table5-1.htm		 all 10 pages (CSV)
Duplicate role landmark is labeled [sia-r79] n/a 10 62 /mmwr/preview/mmwrhtml/00038679.htm
/mmwr/preview/mmwrhtml/rr4808a1.htm
/mmwr/preview/mmwrhtml/00055311.htm		 all 10 pages (CSV)
aria-hidden element is not exposed to assistive technology [sia-r45] n/a 8 1630 /brfss/acbs/2012/prevalence_tables/table3a_LLCP.html
/brfss/acbs/2018/prevalence_tables/table5_LLCP.html
/acip/grade/protein-subunit-rsv-vaccines-older-adults.html		 all 8 pages (CSV)
Tables are used for tabular data, not layout [sia-r40] n/a 6 6 /climate-health/php/climate_ready/grant-recipients.html
/bird-flu/situation-summary
/bird-flu/situation-summary		 all 6 pages (CSV)
Element has required owned roles [sia-r64] n/a 4 4 /mmwr/preview/mmwrhtml/rr4901a2.htm
/mmwr/preview/mmwrhtml/mm5326a1.htm
/nchs/nvss/bridged_race/data_documentation.htm		 all 4 pages (CSV)
Element with orientation is not locked [sia-r59] n/a 4 4 /mmwr/volumes/65/wr/mm6537md.htm
/mmwr/volumes/65/wr/mm6546md.htm
/pcd/issues/2007/oct/07_0091h.htm		 all 4 pages (CSV)
sia-r76 n/a 2 31 /acip/grade/mumps.html
/asthma/nhis/2018/table5-1.htm		 all 2 pages (CSV)
Form field error is identified and described [sia-r75] n/a 2 11 /mmwr/preview/mmwrhtml/mm5913a4.htm
/mmwr/preview/mmwrhtml/rr5907a1.htm		 all 2 pages (CSV)
First focusable element is link to main content [sia-r87] n/a 2 2 /pcd/issues/2007/oct/07_0091h.htm
/flu/weekly/weeklyarchives2023-2024/EIPConditions09.html		 all 2 pages (CSV)
Button has accessible name [sia-r12] n/a 1 12 /hepatitis/php/npr-2025/hep-b-reduce-infections.html all 1 pages (CSV)
Link in text block is visually distinguishable without color [sia-r62] n/a 1 1 /mmwr/preview/mmwrhtml/mm5944a5.htm all 1 pages (CSV)
Assertive live region is marked as atomic [sia-r54] n/a 1 1 /hepatitis/php/npr-2025/hep-b-reduce-infections.html all 1 pages (CSV)
Scrollable element is keyboard accessible [sia-r80] n/a 1 1 /spanish/index.html 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 (12986 raw engine findings → 12565 unique).

Unique issues (rule × page)
12565
Caught by both engines
416 highest confidence
axe only
8108
Alfa only
4041
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-W36, by pages affected.
IssuePagesRule references
Images must have alternative text603axe image-alt · Alfa sia-r2 · ACT 23a2a8
<html> element must have a lang attribute595axe html-has-lang · Alfa sia-r4 · ACT b5c3f8
Elements must only use permitted ARIA attributes367axe aria-prohibited-attr · Alfa sia-r18 · ACT 5c01ea
Links must have discernible text232axe link-name · Alfa sia-r11 · ACT c487ae
Form elements must have labels178axe label · Alfa sia-r8 · ACT e086e5
Table cell headers attributes must refer to other <th> elements in the same table29axe td-headers-attr · Alfa sia-r45 · ACT a25f45
Headings should not be empty23axe empty-heading · Alfa sia-r64 · ACT ffd0e9
ARIA commands must have an accessible name14axe aria-command-name · Alfa sia-r12 · ACT 97a4e1