www.cdc.gov: Accessibility — week 2026-W34
Training priorities
| SC | Criterion | Pages | Rules | Notes |
|---|---|---|---|---|
| 1.4.3 | Contrast (Minimum) | 852 | 2 | |
| 1.1.1 | Non-text Content (images, icons) | 788 | 2 | |
| 3.1.1 | Language of Page | 777 | 2 | |
| 2.5.5 | WCAG 2.5.5 | 732 | 1 | |
| 1.4.6 | WCAG 1.4.6 | 616 | 1 |
Next 10 actions
| Cluster | Severity | Pages | Who it affects | How to fix | Evidence | Decision |
|---|---|---|---|---|---|---|
<html> element must have a lang attribute · unattributed component
|
Serious | 621 | 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
|
Serious | 155 | 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
|
Moderate | 685 | Requires manual testing. | Each page should have exactly one <main> landmark. | pages (CSV) | |
| Document has a valid lang attribute · unattributed component | Moderate | 156 | 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
|
Moderate | 118 | 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
|
Critical | 160 | 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
|
Moderate | 159 | Requires manual testing. | Each page should have exactly one <main> landmark. | pages (CSV) | |
| aria attribute is permitted for element role · unattributed component | Moderate | 344 | Requires manual testing. | Only use ARIA states/properties that are allowed on this element/role. | pages (CSV) | |
Obsolete <big> element (use CSS) · unattributed component
|
Moderate | 48 | Requires manual testing. | Not captured by automated scan — requires manual testing. | pages (CSV) | |
Landmarks should have a unique role or role/label/title (i.e. accessible name) c · unattributed component
|
Moderate | 802 | Requires manual testing. | When a landmark role/type repeats (e.g. two <nav>s), give each a distinct accessible name with aria-label or aria-labelledby (e.g. "Primary" and "Footer" navigation) so screen-reader users can tell them apart. | pages (CSV) |
Bug reports
Exclude URLs from this report
Hide findings on pages you are not responsible for — a section another team owns, or legacy pages out of contract. One pattern per line: a plain substring that matches anywhere in the URL (/medicare/, .aspx) or a slash-wrapped /regex/ (/medicare|medicaid/i); # comments are ignored. A finding is hidden when every affected page matches; for findings with more than 25 pages this is judged by the listed sample. This only changes what this report shows in your browser — every page is still scanned, and your list is saved on this device.
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; 26 more lower-priority finding(s) are summarised at the end of the page, and every finding is in the CSV/JSON downloads.
6 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
Link to this finding Critical axe image-alt WCAG 2.0 A Images must have alternative text (WCAG 1.1.1) Likely template
- Bug ID
VS-daa4092f- Pattern ID
VS-9074b4dd- Combined ID
VS-daa4092f(patternVS-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
img[height="8"][alt=" "][width="140"]- History
- first seen 2026-W24, last seen 2026-W34 (11 wk)
HTML snippet — use this to validate the finding without re-running the tool
<img src="http://www.cdc.gov/navimages/nav21.gif" border="0" alt=" " width="140" height="8">
Description
Images must have alternative text. Detected by axe-core rule image-alt on 628 of 3332 scanned pages (6790 instances).
Steps to reproduce
- Open http://www.cdc.gov/pcd/issues/2008/jan/06_0153_zht.htm.
- Locate the element: img[height="8"][alt=" "][width="140"]
- 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
- /pcd/issues/2008/jan/06_0153_zht.htm
- /mmwr/preview/mmwrhtml/mm4908a1.htm
- /mmwr/preview/mmwrhtml/mm5739a1.htm
- /mmwr/preview/mmwrhtml/mm5748a3.htm
- /mmwr/preview/mmwrhtml/00038136.htm
- /mmwr/preview/mmwrhtml/mm5453a1.htm
- /mmwr/preview/mmwrhtml/mm5804a4.htm
- /mmwr/preview/mmwrhtml/00049560.htm
- /mmwr/preview/mmwrhtml/00001877.htm
- /mmwr/preview/mmwrhtml/00000306.htm
- /mmwr/preview/mmwrhtml/mm5342a3.htm
- /mmwr/preview/mmwrhtml/mm5242a6.htm
- /mmwr/preview/mmwrhtml/mm4842a5.htm
- /mmwr/preview/mmwrhtml/mm5748a1.htm
- /pcd/issues/2006/oct/06_0032_zht.htm
- /mmwr/preview/mmwrhtml/00001144.htm
- /mmwr/preview/mmwrhtml/mm4935a1.htm
- /PCD/issues/2007/apr/06_0085_es.htm
- /mmwr/preview/mmwrhtml/mm5709a3.htm
- /mmwr/preview/mmwrhtml/mm4930a3.htm
- /mmwr/preview/mmwrhtml/mm5601a3.htm
- /pcd/issues/2008/jan/06_0170_zht.htm
- /pcd/issues/2008/apr/07_0039_zhs.htm
- /pcd/issues/2006/jan/05_0099_es.htm
- /mmwr/preview/mmwrhtml/mm5314a2.htm
…and more — all 628 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.
See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/image-alt?application=axeAPI
Link to this finding Serious axe html-has-lang WCAG 2.0 A <html> element must have a lang attribute (WCAG 3.1.1) Likely template
- Bug ID
VS-15c4f6ba- Pattern ID
VS-c126b6a6- Combined ID
VS-15c4f6ba(patternVS-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-W34 (11 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 621 of 3332 scanned pages (621 instances).
Steps to reproduce
- Open http://www.cdc.gov/pcd/issues/2008/jan/06_0153_zht.htm.
- Locate the element: html
- 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
- /pcd/issues/2008/jan/06_0153_zht.htm
- /mmwr/preview/mmwrhtml/mm4908a1.htm
- /mmwr/preview/mmwrhtml/mm5739a1.htm
- /mmwr/preview/mmwrhtml/mm5748a3.htm
- /mmwr/preview/mmwrhtml/00038136.htm
- /mmwr/preview/mmwrhtml/mm5453a1.htm
- /mmwr/preview/mmwrhtml/mm5804a4.htm
- /mmwr/preview/mmwrhtml/00049560.htm
- /mmwr/preview/mmwrhtml/00001877.htm
- /mmwr/preview/mmwrhtml/00000306.htm
- /mmwr/preview/mmwrhtml/mm5342a3.htm
- /mmwr/preview/mmwrhtml/mm5242a6.htm
- /mmwr/preview/mmwrhtml/mm4842a5.htm
- /flu/weekly/weeklyarchives2025-2026/data/senAllregt26.html
- /mmwr/preview/mmwrhtml/mm5748a1.htm
- /pcd/issues/2006/oct/06_0032_zht.htm
- /mmwr/preview/mmwrhtml/00001144.htm
- /mmwr/preview/mmwrhtml/mm4935a1.htm
- /PCD/issues/2007/apr/06_0085_es.htm
- /mmwr/preview/mmwrhtml/mm5709a3.htm
- /mmwr/preview/mmwrhtml/mm4930a3.htm
- /mmwr/preview/mmwrhtml/mm5601a3.htm
- /pcd/issues/2008/jan/06_0170_zht.htm
- /pcd/issues/2008/apr/07_0039_zhs.htm
- /pcd/issues/2006/jan/05_0099_es.htm
…and more — all 621 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").
See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/html-has-lang?application=axeAPI
Link to this finding Serious axe color-contrast WCAG 2.0 AA Elements must meet minimum color contrast ratio thresholds (WCAG 1.4.3) Likely template
- Bug ID
VS-5f7ec93d- Pattern ID
VS-be8d563e- Combined ID
VS-5f7ec93d(patternVS-be8d563e) — use this format in JIRA/spreadsheets to filter by instance or pattern- WCAG category
- WCAG 2.0 AA
- Obligation
- required
- Handling
- review
- WCAG SC
- 1.4.3 Contrast (Minimum) (Level AA, WCAG 2.0)
- XPath / selector
font- History
- first seen 2026-W24, last seen 2026-W34 (11 wk)
HTML snippet — use this to validate the finding without re-running the tool
<font color="red">Persons using assistive technology might not be able to fully access information in this file. For assistance, please send e-mail to: <a href="mailto:mmwrq@cdc.gov">mmwrq@cdc.gov</a>
Description
Elements must meet minimum color contrast ratio thresholds. Detected by axe-core rule color-contrast on 613 of 3332 scanned pages (940 instances).
Steps to reproduce
- Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6017a10.htm?s_cid=mm6017a10_w.
- Locate the element: font
- 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
- /mmwr/preview/mmwrhtml/mm6017a10.htm
- /mmwr/preview/mmwrhtml/mm4908a1.htm
- /mmwr/preview/mmwrhtml/mm5739a1.htm
- /mmwr/preview/mmwrhtml/mm5748a3.htm
- /mmwr/preview/mmwrhtml/00038136.htm
- /mmwr/preview/ind1996_ss.html
- /mmwr/preview/mmwrhtml/mm5453a1.htm
- /mmwr/preview/mmwrhtml/mm5804a4.htm
- /mmwr/preview/mmwrhtml/00049560.htm
- /mmwr/preview/mmwrhtml/00001877.htm
- /mmwr/preview/mmwrhtml/00000306.htm
- /mmwr/preview/mmwrhtml/mm5342a3.htm
- /mmwr/preview/mmwrhtml/mm5242a6.htm
- /mmwr/preview/mmwrhtml/mm4842a5.htm
- /mmwr/preview/mmwrhtml/mm6115a3.htm
- /mmwr/preview/mmwrhtml/mm5748a1.htm
- /mmwr/indss_2001.html
- /mmwr/preview/mmwrhtml/00001144.htm
- /mmwr/preview/mmwrhtml/mm4935a1.htm
- /mmwr/preview/mmwrhtml/mm6109a7.htm
- /mmwr/preview/mmwrhtml/mm5709a3.htm
- /mmwr/preview/mmwrhtml/mm4930a3.htm
- /mmwr/preview/mmwrhtml/mm5601a3.htm
- /mmwr/preview/mmwrhtml/mm6001a1.htm
- /mmwr/preview/mmwrhtml/mm5314a2.htm
…and more — all 613 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.
See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/color-contrast?application=axeAPI
Link to this finding Serious axe link-name WCAG 2.0 A Links must have discernible text (WCAG 2.4.4) Likely template
- Bug ID
VS-4f8efdc2- Pattern ID
VS-e9fe47ac- Combined ID
VS-4f8efdc2(patternVS-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
table[cellpadding="0"]:nth-child(2) > tbody > tr > td[width="140"] > a[href$="cdc.gov/"]- History
- first seen 2026-W24, last seen 2026-W34 (11 wk)
HTML snippet — use this to validate the finding without re-running the tool
<a href="http://www.cdc.gov/"><img src="http://www.cdc.gov/navimages/nav21.gif" border="0" alt=" " width="140" height="8"></a>
Description
Links must have discernible text. Detected by axe-core rule link-name on 252 of 3332 scanned pages (596 instances).
Steps to reproduce
- Open http://www.cdc.gov/pcd/issues/2008/jan/06_0153_zht.htm.
- Locate the element: table[cellpadding="0"]:nth-child(2) > tbody > tr > td[width="140"] > a[href$="cdc.gov/"]
- 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
- /pcd/issues/2008/jan/06_0153_zht.htm
- /mmwr/preview/ind1996_ss.html
- /pcd/issues/2006/oct/06_0032_zht.htm
- /mmwr/indss_2001.html
- /PCD/issues/2007/apr/06_0085_es.htm
- /pcd/issues/2008/jan/06_0170_zht.htm
- /pcd/issues/2008/apr/07_0039_zhs.htm
- /pcd/issues/2006/jan/05_0099_es.htm
- /dental-infection-control/hcp/dental-ipc-faqs/sterilization-monitoring.html
- /pcd/issues/2010/mar/09_0095_es.htm
- /pcd/issues/2006/jan/05_0093_fr.htm
- /laboratory/specimen-submission/detail.html
- /pcd/issues/2012/11_0144_es.htm
- /vaccines/hcp/storage-handling/equipment.html
- /media/releases/2024/s0522-human-case-h5.html
- /PCD/es/2011_jul_toc.htm
- /pcd/issues/2011/may/10_0105.htm
- /PCD/issues/2006/apr/05_0087_es.htm
- /pcd/issues/2010/jul/09_0249.htm
- /pcd/issues/2011/may/10_0036_es.htm
- /pcd/es/2011_nov_toc.htm
- /pcd/issues/2008/apr/07_0241.htm
- /mmwr/preview/ind1994_ss.html
- /pcd/issues/2008/jan/06_0156_zht.htm
- /mmwr/preview/ind1997_rr.html
…and more — all 252 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.
See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/link-name?application=axeAPI
Link to this finding Critical axe label WCAG 2.0 A Form elements must have labels (WCAG 4.1.2) Likely template
- Bug ID
VS-814682ad- Pattern ID
VS-fafffee0- Combined ID
VS-814682ad(patternVS-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-W34 (11 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 174 of 3332 scanned pages (174 instances).
Steps to reproduce
- Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6017a10.htm?s_cid=mm6017a10_w.
- Locate the element: #searchBox
- 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
- /mmwr/preview/mmwrhtml/mm6017a10.htm
- /mmwr/preview/ind1996_ss.html
- /mmwr/preview/mmwrhtml/mm6115a3.htm
- /mmwr/indss_2001.html
- /mmwr/preview/mmwrhtml/mm6418a3.htm
- /mmwr/preview/mmwrhtml/mm6109a7.htm
- /mmwr/preview/mmwrhtml/mm6001a1.htm
- /mmwr/preview/mmwrhtml/mm6408a5.htm
- /mmwr/preview/mmwrhtml/mm6351a2.htm
- /mmwr/preview/mmwrhtml/mm6001a5.htm
- /mmwR/preview/mmwrhtml/mm5935a6.htm
- /mmwr/preview/mmwrhtml/mm5947a4.htm
- /mmwr/preview/mmwrhtml/mm6028a7.htm
- /mmwr/preview/mmwrhtml/mm6331a2.htm
- /mmwr/preview/mmwrhtml/mm6001a9.htm
- /mmwr/preview/mmwrhtml/mm6041md.htm
- /mmwr/preview/ind1994_ss.html
- /mmwr/preview/ind1997_rr.html
- /mmwr/preview/mmwrhtml/mm6446a3.htm
- /mmwr/preview/mmwrhtml/mm6013a6.htm
- /mmwr/preview/mmwrhtml/ss6015a1.htm
- /mmwr/preview/mmwrhtml/mm6322a5.htm
- /mmwr/preview/mmwrhtml/mm6008a4.htm
- /mmwr/preview/mmwrhtml/mm6340a4.htm
- /mmwr/preview/mmwrhtml/mm6302a2.htm
…and more — all 174 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.
See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/label?application=axeAPI
Link to this finding Serious axe link-in-text-block WCAG 2.0 A Links must be distinguishable without relying on color (WCAG 1.4.1) Likely template
- Bug ID
VS-e1a05627- Pattern ID
VS-8ade3360- Combined ID
VS-e1a05627(patternVS-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-W34 (11 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 73 of 3332 scanned pages (86 instances).
Steps to reproduce
- Open https://www.cdc.gov/suicide/playbook/cost-considerations.html.
- Locate the element: .all-pages
- 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
- /suicide/playbook/cost-considerations.html
- /vaccines/hcp/storage-handling/equipment.html
- /infection-control/hcp/healthcare-personnel-epidemiology-control/pregnant-hcp.html
- /infection-control/hcp/mdro-management/table-3-intensified-recommendations.html
- /safe-labs/php/echo-biosafety-2023/biosafety-challenges-alaska.html
- /mmwr/preview/mmwrhtml/mm6008a4.htm
- /mmwr/preview/mmwrhtml/mm6340a4.htm
- /contraception/hcp/usspr/combined-hormonal-contraceptives.html
- /infection-control/hcp/disinfection-and-sterilization/ideal-low-temp-sterilization.html
- /infection-control/hcp/mdro-management/prevention-control.html
- /bird-flu/avian-timeline/2010-2019.html
- /lab-quality/php/prevent-adult-blood-culture-contamination/sub-measure-single-set.html
- /mmwr/preview/mmwrhtml/mm6404a7.htm
- /grants/applying/faqs.html
- /vaccines/hcp/storage-handling/emergency-transport.html
- /intimate-partner-violence/php/datingmatters/success-stories.html
- /mmwr/preview/mmwrhtml/mm6421a6.htm
- /infection-control/hcp/healthcare-personnel-epidemiology-control/mumps.html
- /grants/applying/sam.html
- /disability-emergency-preparedness/people-with-disabilities/make-a-plan.html
- /infection-control/hcp/disinfection-sterilization/flash-sterilization.html
- /mmwr/preview/mmwrhtml/rr6207a1.htm
- /sudden-infant-death/data-research/data/suid-rates-by-race-ethnicity.html
- /contraception/hcp/usspr/methods.html
- /healthcare-associated-infections/php/haic-eip/invasive-staphylococcus.html
…and more — all 73 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
Link to this finding Serious axe frame-title WCAG 2.0 A Frames must have an accessible name (WCAG 4.1.2) Likely template
- Bug ID
VS-b40d3a17- Pattern ID
VS-3f76c7ea- Combined ID
VS-b40d3a17(patternVS-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
div[data-section="cdc_generic_section_1"] > .dfe-block.dfe-block--cdcmodule > .cdc-youtube-embed > iframe- History
- first seen 2026-W24, last seen 2026-W34 (11 wk)
HTML snippet — use this to validate the finding without re-running the tool
<iframe src="//www.youtube-nocookie.com/embed/Xmd_ddlzi_k?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 40 of 3332 scanned pages (49 instances).
Steps to reproduce
- Open https://www.cdc.gov/healthy-pets/educational-materials/videos.html.
- Locate the element: div[data-section="cdc_generic_section_1"] > .dfe-block.dfe-block--cdcmodule > .cdc-youtube-embed > iframe
- 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
- /healthy-pets/educational-materials/videos.html
- /natural-disasters/psa-toolkit/stay-safe-during-a-tornado.html
- /prediabetes/risktest/index.html
- /youth-violence/php/yvpcs/index.html
- /stophivtogether/hiv-testing/index.html
- /natural-disasters/psa-toolkit/floodwater-safety.html
- /stophivtogether/hiv-testing/self-testing.html
- /vaccines/resources/video-pregnancy-share-protection-baby.html
- /pandemic-flu/php/planning-guidance/index.html
- /cancer/es/prevention/healthy-choices.html
- /bird-flu/video-series/raw-milk.html
- /cancer/features/colorectal-cancer.html
- /cancer-survivors/patients/side-effects-of-treatment.html
- /stophivtogether/prepared/index.html
- /disability-emergency-preparedness/people-with-disabilities/make-a-plan.html
- /stophivtogether/hiv-stigma/index.html
- /cancer/features/prostate-cancer.html
- /global-hiv-tb/php/global-events/world-tb-day.html
- /natural-disasters/psa-toolkit/protect-your-heart-when-its-hot.html
- /orr/deo/index.html
- /healthy-tribes-ghwic/php/funding/index.html
- /hearher/pregnant-postpartum/index.html
- /tobacco/hcp/patient-care/index.html
- /natural-disasters/psa-toolkit/keep-track-of-nearby-wildfire.html
- /stophivtogether/prepared/index.html
…and more — all 40 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
Link to this finding Serious axe list WCAG 2.0 A <ul> and <ol> must only directly contain <li>, <script> or <template> elements (WCAG 1.3.1) Likely template
- Bug ID
VS-30c557ef- Pattern ID
VS-a0bdbdf6- Combined ID
VS-30c557ef(patternVS-a0bdbdf6) — use this format in JIRA/spreadsheets to filter by instance or pattern- WCAG category
- WCAG 2.0 A
- Obligation
- required
- Handling
- review
- WCAG SC
- 1.3.1 Info and Relationships (Level A, WCAG 2.0)
- XPath / selector
ol- History
- first seen 2026-W24, last seen 2026-W34 (11 wk)
HTML snippet — use this to validate the finding without re-running the tool
<ol>
Description
<ul> and <ol> must only directly contain <li>, <script> or <template> elements. Detected by axe-core rule list on 37 of 3332 scanned pages (47 instances).
Steps to reproduce
- Open http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5342a3.htm.
- Locate the element: ol
- 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
- /mmwr/preview/mmwrhtml/mm5342a3.htm
- /mmwr/preview/mmwrhtml/00018860.htm
- /mmwr/preview/mmwrhtml/00017393.htm
- /mmwr/preview/mmwrhtml/00038049.htm
- /mmwr/preview/mmwrhtml/00016865.htm
- /mmwr/preview/mmwrhtml/00018808.htm
- /mmwr/preview/mmwrhtml/00001894.htm
- /mmwr/preview/mmwrhtml/00001935.htm
- /mmwr/preview/mmwrhtml/00048339.htm
- /mmwr/preview/mmwrhtml/00046433.htm
- /pcd/issues/2017/16_0376.htm
- /mmwr/preview/mmwrhtml/00001925.htm
- /mmwr/preview/mmwrhtml/00040483.htm
- /mmwr/preview/mmwrhtml/00017197.htm
- /mmwr/preview/mmwrhtml/00001831.htm
- /mmwr/preview/mmwrhtml/00049638.htm
- /mmwr/preview/mmwrhtml/rr5111a1.htm
- /mmwr/preview/mmwrhtml/rr5702a1.htm
- /mmwr/preview/mmwrhtml/00016306.htm
- /bird-flu/worker-safety/personal-protective-equipment.html
- /mmwr/preview/mmwrhtml/mm5134a1.htm
- /mmwr/preview/mmwrhtml/00016032.htm
- /bird-flu/worker-safety/personal-protective-equipment.html
- /mmwr/preview/mmwrhtml/00001819.htm
- /mmwr/preview/mmwrhtml/00052581.htm
…and more — all 37 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 <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
Link to this finding Serious axe scrollable-region-focusable WCAG 2.0 A Scrollable region must have keyboard access (WCAG 2.1.1) Likely template
- Bug ID
VS-a17a879e- Pattern ID
VS-c613c153- Combined ID
VS-a17a879e(patternVS-c613c153) — use this format in JIRA/spreadsheets to filter by instance or pattern- WCAG category
- WCAG 2.0 A
- Obligation
- required
- Handling
- review
- WCAG SC
- 2.1.1 Keyboard (Level A, WCAG 2.0)
- XPath / selector
.dfe-block--width-wide.dfe-block.dfe-block--cdcmodule:nth-child(8) > .dfe-block__inner > .cdc-textblock > div:nth-child(2)- History
- first seen 2026-W24, last seen 2026-W34 (11 wk)
HTML snippet — use this to validate the finding without re-running the tool
<div style="overflow-x: auto;">
Description
Scrollable region must have keyboard access. Detected by axe-core rule scrollable-region-focusable on 22 of 3332 scanned pages (40 instances).
Steps to reproduce
- Open https://www.cdc.gov/vaccines/acip/recs/grade/PCV21-non-risk-based-adults-19-49.html.
- Locate the element: .dfe-block--width-wide.dfe-block.dfe-block--cdcmodule:nth-child(8) > .dfe-block__inner > .cdc-textblock > div:nth-child(2)
- 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
- /vaccines/acip/recs/grade/PCV21-non-risk-based-adults-19-49.html
- /nchs/data/hestat/hestat111.htm
- /nchs/updates/feature-1.html
- /iis/code-sets/fall-season-respiratory-codes.html
- /asthma/nhis/2021/table6-1.htm
- /hepatitis-surveillance-2022/hepatitis-b/table-2-3.html
- /fluview/surveillance/2025-week-41.html
- /mmwr/volumes/66/wr/mm6644a2.htm
- /flu-vaccines-work/php/effectiveness-studies/index.html
- /fluview/surveillance/2024-week-50.html
- /fluview/surveillance/2025-week-03.html
- /malaria/php/surveillance-report/2020.html
- /respvaxview/publications/national-state-vaccination-estimates.html
- /vaccines/acip/recs/grade/recombinant-zoster-immunocompromised.html
- /yellow-book/hcp/refugees-immigrants-migrants/pre-arrival-medical-screening-and-interventions.html
- /tb/statistics/reports/2022/table17.htm
- /fluview/surveillance/2024-week-42.html
- /fluview/surveillance/2025-week-16.html
- /mmwr/volumes/66/wr/mm6628a4.htm
- /vaccines/acip/recs/grade/covid-19-2024-2025-6-months-and-older.html
- /asthma/nhis/2018/table3-2.htm
- /babesiosis/php/data-stats/index.html
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
Link to this finding 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) Likely template
- Bug ID
VS-72656a5f- Pattern ID
VS-07ba3b17- Combined ID
VS-72656a5f(patternVS-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
div[role="tablist"]:nth-child(1) > div[role="tabpanel"]:nth-child(2) > .opt-in.table-bordered.table-sm- History
- first seen 2026-W25, last seen 2026-W34 (10 wk)
HTML snippet — use this to validate the finding without re-running the tool
<table class="opt-in table table-bordered table-sm" border="1">
Description
Table cell headers attributes must refer to other <th> elements in the same tabl. Detected by axe-core rule td-headers-attr on 19 of 3332 scanned pages (25 instances).
Steps to reproduce
- Open http://www.cdc.gov/dpdx/diagnosticprocedures/stool/morphcomp.html.
- Locate the element: div[role="tablist"]:nth-child(1) > div[role="tabpanel"]:nth-child(2) > .opt-in.table-bordered.table-sm
- 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
- /dpdx/diagnosticprocedures/stool/morphcomp.html
- /nchs/products/databriefs/db96.htm
- /brfss/acbs/2012/prevalence_tables/table8b_LLCP.html
- /asthma/nhis/2021/table6-1.htm
- /brfss/acbs/2009/prevalence_tables/table4a.html
- /flu-vaccines-work/php/effectiveness-studies/index.html
- /brfss/acbs/2012/prevalence_tables/table11a.html
- /brfss/acbs/2009/prevalence_tables/table9.html
- /brfss/acbs/2010/prevalence_tables/table13.html
- /brfss/acbs/2010/prevalence_tables/table3a.html
- /brfss/acbs/2009/prevalence_tables/table4b.html
- /vaccines/imz-schedules/child-easyread-compliant.html
- /respvaxview/publications/national-state-vaccination-estimates.html
- /asthma/nhis/2021/table2-2.htm
- /covidvaxview/publications/covid19-vaccination-high-risk-pregnancy.html
- /yellow-book/hcp/preparing-international-travelers/travel-health-kits.html
- /vaccines/acip/recs/grade/recombinant-zoster-immunocompromised.html
- /brfss/acbs/2012/prevalence_tables/table4a.html
- /vaccines/acip/recs/grade/covid-19-2024-2025-6-months-and-older.html
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
Link to this finding Critical axe select-name WCAG 2.0 A Select element must have an accessible name (WCAG 4.1.2)
- Bug ID
VS-7f95f7d4- Pattern ID
VS-fab92378- Combined ID
VS-7f95f7d4(patternVS-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
#medicine- History
- first seen 2026-W25, last seen 2026-W34 (10 wk)
HTML snippet — use this to validate the finding without re-running the tool
<select id="medicine" onchange="window.location = this.options[this.selectedIndex].value;">
Description
Select element must have an accessible name. Detected by axe-core rule select-name on 9 of 3332 scanned pages (22 instances).
Steps to reproduce
- Open http://www.cdc.gov/tobacco/campaign/tips/spanish/dejar-fumar/medicamentos/como-usar-medicamentos/inhalador-oral-de-nicotina.html.
- Locate the element: #medicine
- 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
- /tobacco/campaign/tips/spanish/dejar-fumar/medicamentos/como-usar-medicamentos/inhalador-oral-de-nicotina.html
- /tobacco/campaign/tips/spanish/dejar-fumar/medicamentos/como-usar-medicamentos/tabletas-de-nicotina.html
- /tobacco/campaign/tips/quit-smoking/quit-smoking-medications/how-to-use-quit-smoking-medicines/index.html
- /tobacco/campaign/tips/spanish/dejar-fumar/medicamentos/como-usar-medicamentos/index.html
- /tobacco/campaign/tips/spanish/dejar-fumar/medicamentos/como-usar-medicamentos/sin-medicamentos.html
- /mmwr/preview/mmwrhtml/mm6341a3.htm
- /overdose-prevention/data-research/facts-stats/dose-dashboard-nonfatal-surveillance-data.html
- /dhds/about
- /nchs/products/nvsr.htm
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
Link to this finding Serious axe blink WCAG 2.0 A <blink> elements are deprecated and must not be used (WCAG 2.2.2)
- Bug ID
VS-e648d3e2- Pattern ID
VS-4b45acfe- Combined ID
VS-e648d3e2(patternVS-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-W34 (10 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 7 of 3332 scanned pages (8 instances).
Steps to reproduce
- Open http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5453a1.htm.
- Locate the element: blink
- 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
- /mmwr/preview/mmwrhtml/mm5453a1.htm
- /mmwr/preview/mmwrhtml/mm5634a5.htm
- /mmwR/preview/mmwrhtml/rr5606a1.htm
- /mmwr/preview/mmwrhtml/rr5404a1.htm
- /mmwr/preview/mmwrhtml/mm5633a4.htm
- /mmwr/preview/mmwrhtml/ss5510a2.htm
- /mmwr/preview/mmwrhtml/ss5606a2.htm
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
Link to this finding Serious axe aria-command-name WCAG 2.0 A ARIA commands must have an accessible name (WCAG 4.1.2)
- Bug ID
VS-af63ae4b- Pattern ID
VS-5c82bd60- Combined ID
VS-af63ae4b(patternVS-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)
- Example URL
- http://www.cdc.gov/sudden-infant-death/data-research/data/suid-rates-by-race-ethnicity.html
- XPath / selector
th[aria-labelledby=":r3:-heading-0"] > .sort-icon[role="button"]- History
- first seen 2026-W24, last seen 2026-W34 (11 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 6 of 3332 scanned pages (72 instances).
Steps to reproduce
- Open http://www.cdc.gov/sudden-infant-death/data-research/data/suid-rates-by-race-ethnicity.html.
- Locate the element: th[aria-labelledby=":r3:-heading-0"] > .sort-icon[role="button"]
- 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
- /sudden-infant-death/data-research/data/suid-rates-by-race-ethnicity.html
- /hepatitis/php/npr-2023/hep-b-reduce-deaths-api.html
- /hepatitis/php/npr-2025/hep-c-reduce-infections-pwid.html
- /hepatitis/php/npr-2025/hep-c-reduce-deaths-aian.html
- /hepatitis/php/npr-2023/hep-c-reduce-infections-pwid.html
- /hepatitis-surveillance-2021/hepatitis-c/figure-3-4.html
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
Link to this finding Serious axe listitem WCAG 2.0 A <li> elements must be contained in a <ul> or <ol> (WCAG 1.3.1)
- Bug ID
VS-0fb66a73- Pattern ID
VS-6175596b- Combined ID
VS-0fb66a73(patternVS-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
div[data-section="cdc_generic_section_3"] > .table.dfe-table.table-no-header:nth-child(5) > .table-body[role="rowgroup"] > .table-row.row[role="row"]:nth-child(1) > .table-col[role="cell"][data-col="2"] > li- History
- first seen 2026-W24, last seen 2026-W34 (11 wk)
HTML snippet — use this to validate the finding without re-running the tool
<li>
Description
<li> elements must be contained in a <ul> or <ol>. Detected by axe-core rule listitem on 5 of 3332 scanned pages (26 instances).
Steps to reproduce
- Open https://www.cdc.gov/zika/es/travel/recomendaciones-para-las-personas-que-viajan-y-las-personas-que-viven-en-el-extranjero.html.
- Locate the element: div[data-section="cdc_generic_section_3"] > .table.dfe-table.table-no-header:nth-child(5) > .table-body[role="rowgroup"] > .table-row.row[role="row"]:nth-child(1) > .table-col[role="cell"][data-col="2"] > li
- 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
- /zika/es/travel/recomendaciones-para-las-personas-que-viajan-y-las-personas-que-viven-en-el-extranjero.html
- /control-legionella/php/toolkit/routine-testing-module.html
- /clean-hands/hcp/clinical-safety
- /mmwr/preview/mmwrhtml/rr5111a1.htm
- /std-ips/php/glossary/index.html
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
Link to this finding Serious axe nested-interactive WCAG 2.0 A Interactive controls must not be nested (WCAG 4.1.2)
- Bug ID
VS-d7d80039- Pattern ID
VS-58301a87- Combined ID
VS-d7d80039(patternVS-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-11- History
- first seen 2026-W24, last seen 2026-W34 (11 wk)
HTML snippet — use this to validate the finding without re-running the tool
<div class="card-header h4 bg-white rounded-0" role="tab" id="acc-header-11" href="#acc-panel-11" data-toggle="collapse" data-parent="#accordion-11" aria-controls="acc-panel-11" aria-expanded="true">
Description
Interactive controls must not be nested. Detected by axe-core rule nested-interactive on 5 of 3332 scanned pages (19 instances).
Steps to reproduce
- Open https://www.cdc.gov/tobacco/campaign/tips/quit-smoking/quitline/top-10-questions-people-ask-about-quitlines.html.
- Locate the element: #acc-header-11
- 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
- /tobacco/campaign/tips/quit-smoking/quitline/top-10-questions-people-ask-about-quitlines.html
- /diabetes/burden-toolkit/state-burden-toolkit-health-burden.html
- /stophivtogether/hiv-testing/self-testing.html
- /nchs/nvss/vsrr.htm
- /mmwr/cme/conted.html
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
Link to this finding Critical axe aria-required-children WCAG 2.0 A Certain ARIA roles must contain particular children (WCAG 1.3.1)
- Bug ID
VS-a802b7c8- Pattern ID
VS-9429bb8d- Combined ID
VS-a802b7c8(patternVS-9429bb8d) — use this format in JIRA/spreadsheets to filter by instance or pattern- WCAG category
- WCAG 2.0 A
- Obligation
- required
- Handling
- review
- WCAG SC
- 1.3.1 Info and Relationships (Level A, WCAG 2.0)
- XPath / selector
#accordion-11- History
- first seen 2026-W25, last seen 2026-W34 (9 wk)
HTML snippet — use this to validate the finding without re-running the tool
<div class="accordion indicator-plus accordion-white mb3" id="accordion-11" role="tablist">
Description
Certain ARIA roles must contain particular children. Detected by axe-core rule aria-required-children on 4 of 3332 scanned pages (8 instances).
Steps to reproduce
- Open https://www.cdc.gov/tobacco/campaign/tips/quit-smoking/quitline/top-10-questions-people-ask-about-quitlines.html.
- Locate the element: #accordion-11
- 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
- /tobacco/campaign/tips/quit-smoking/quitline/top-10-questions-people-ask-about-quitlines.html
- /dpdx/diagnosticprocedures/stool/morphcomp.html
- /stophivtogether/hiv-testing/self-testing.html
- /mmwr/cme/conted.html
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
Link to this finding Serious axe aria-prohibited-attr WCAG 2.0 A Elements must only use permitted ARIA attributes (WCAG 4.1.2)
- Bug ID
VS-659983e6- Pattern ID
VS-ebb1c464- Combined ID
VS-659983e6(patternVS-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)
- Example URL
- https://www.cdc.gov/stophivtogether/hiv-testing/index.html?s_cid=so_togetherprovidertk0045
- XPath / selector
#UNIQUE3056890ef409a144- History
- first seen 2026-W28, last seen 2026-W34 (7 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="UNIQUE3056890ef409a144" aria-label="Carousel">
Description
Elements must only use permitted ARIA attributes. Detected by axe-core rule aria-prohibited-attr on 4 of 3332 scanned pages (4 instances).
Steps to reproduce
- Open https://www.cdc.gov/stophivtogether/hiv-testing/index.html?s_cid=so_togetherprovidertk0045.
- Locate the element: #UNIQUE3056890ef409a144
- 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
- /stophivtogether/hiv-testing/index.html
- /stophivtogether/hiv-testing/self-testing.html
- /stophivtogether/hiv-stigma/index.html
- /stophivtogether/hiv-testing/index.html
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
Link to this finding Critical axe area-alt WCAG 2.0 A Active <area> elements must have alternative text (WCAG 2.4.4) Likely content
- Bug ID
VS-b957b4a8- Pattern ID
VS-4e469a59- Combined ID
VS-b957b4a8(patternVS-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-W34 (2 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 1 of 3332 scanned pages (6 instances).
Steps to reproduce
- Open https://www.cdc.gov/pcd/issues/2006/jan/05_0131.htm.
- Locate the element: area[onmouseover="stm(Text[1],Style[1])"]
- 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
Link to this finding Critical axe aria-allowed-attr WCAG 2.0 A Elements must only use supported ARIA attributes (WCAG 4.1.2) Likely content
- Bug ID
VS-e82533cf- Pattern ID
VS-1467ea8a- Combined ID
VS-e82533cf(patternVS-1467ea8a) — 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)
- Example URL
- https://www.cdc.gov/nhsn/facadmin
- XPath / selector
.fieldset--checkbox-group- History
- first seen 2026-W25, last seen 2026-W34 (7 wk)
HTML snippet — use this to validate the finding without re-running the tool
<fieldset class="fieldset--checkbox-group" aria-required="true">
Description
Elements must only use supported ARIA attributes. Detected by axe-core rule aria-allowed-attr on 1 of 3332 scanned pages (1 instances).
Steps to reproduce
- Open https://www.cdc.gov/nhsn/facadmin.
- Locate the element: .fieldset--checkbox-group
- Confirm the axe-core finding for rule aria-allowed-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
How to fix: Remove ARIA attributes that aren't allowed on this role/element.
See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/aria-allowed-attr?application=axeAPI
Link to this finding Serious axe valid-lang WCAG 2.0 AA lang attribute must have a valid value (WCAG 3.1.2) Likely content
- Bug ID
VS-7a81f398- Pattern ID
VS-dd1c019f- Combined ID
VS-7a81f398(patternVS-dd1c019f) — use this format in JIRA/spreadsheets to filter by instance or pattern- WCAG category
- WCAG 2.0 AA
- Obligation
- required
- Handling
- review
- WCAG SC
- 3.1.2 Language of Parts (Level AA, WCAG 2.0)
- XPath / selector
div[data-post="1937_2504"] > .dfe-curated-link__download.has-content > .download-container > .cdc-block-link[lang="__"][aria-label="Download"]- History
- first seen 2026-W24, last seen 2026-W34 (7 wk)
HTML snippet — use this to validate the finding without re-running the tool
<a lang="__" class="cdc-block-link" href="/flu-resources/media/pdfs/2024/08/covercough_school8-5x11_khm.pdf" aria-label="Download" download="covercough_school8-5x11_khm.pdf" target="_blank">
Description
lang attribute must have a valid value. Detected by axe-core rule valid-lang on 1 of 3332 scanned pages (3 instances).
Steps to reproduce
- Open https://www.cdc.gov/flu-resources/php/resources/cover-your-cough-community-flyer.html.
- Locate the element: div[data-post="1937_2504"] > .dfe-curated-link__download.has-content > .download-container > .cdc-block-link[lang="__"][aria-label="Download"]
- Confirm the axe-core finding for rule valid-lang against WCAG 3.1.2 Language of Parts.
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
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/valid-lang?application=axeAPI
Link to this finding Serious axe aria-input-field-name WCAG 2.0 A ARIA input fields must have an accessible name (WCAG 4.1.2) Likely content
- Bug ID
VS-b6a822b3- Pattern ID
VS-0841abc2- Combined ID
VS-b6a822b3(patternVS-0841abc2) — 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
.rc-slider-handle-1- History
- first seen 2026-W25, last seen 2026-W34 (6 wk)
HTML snippet — use this to validate the finding without re-running the tool
<div tabindex="0" class="rc-slider-handle rc-slider-handle-1" role="slider" aria-valuemin="1" aria-valuemax="89" aria-valuenow="49" aria-disabled="false" style="left: 54.5455%; right: auto; transform:
Description
ARIA input fields must have an accessible name. Detected by axe-core rule aria-input-field-name on 1 of 3332 scanned pages (2 instances).
Steps to reproduce
- Open http://www.cdc.gov/overdose-prevention/data-research/facts-stats/dose-dashboard-nonfatal-surveillance-data.html.
- Locate the element: .rc-slider-handle-1
- Confirm the axe-core finding for rule aria-input-field-name against WCAG 4.1.2 Name, Role, Value.
Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- Without vision — 1.0% of population
- Limited vision — 2.4% of population
- Limited manipulation/strength — 13.0% of population
Affected pages
Testing environment
Automated: axe-core, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.
Suggested fix
See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/aria-input-field-name?application=axeAPI
Link to this finding Serious axe document-title WCAG 2.0 A Documents must have <title> element to aid in navigation (WCAG 2.4.2) Likely content
- Bug ID
VS-71571375- Pattern ID
VS-c80d5faa- Combined ID
VS-71571375(patternVS-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-W34 (6 wk)
HTML snippet — use this to validate the finding without re-running the tool
<html><head></head><body></body></html>
Description
Documents must have <title> element to aid in navigation. Detected by axe-core rule document-title on 1 of 3332 scanned pages (1 instances).
Steps to reproduce
- Open https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/viral-hemorrhagic-fevers/hcp/diagnosis-testing/evaluating-an-ill-person-for-vhf.html.
- Locate the element: html
- 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>.
See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/document-title?application=axeAPI
Link to this finding Serious axe region Best Practice All page content should be contained by landmarks (WCAG criterion undetermined) Likely template
- Bug ID
VS-5ee20e15- Pattern ID
VS-f18df681- Combined ID
VS-5ee20e15(patternVS-f18df681) — use this format in JIRA/spreadsheets to filter by instance or pattern- WCAG category
- Best Practice
- Obligation
- advisory
- Handling
- review
- WCAG SC
- Best Practice — not a WCAG requirement
- XPath / selector
.cdc-site-gov-notice- History
- first seen 2026-W24, last seen 2026-W34 (11 wk)
HTML snippet — use this to validate the finding without re-running the tool
<div class="cdc-site-gov-notice noindex noprint" aria-label="Official website of the United States government">
Description
All page content should be contained by landmarks. Detected by axe-core rule region on 2957 of 3332 scanned pages (52946 instances).
Steps to reproduce
- Open https://www.cdc.gov/finance/conference-report/2024-spending-report.html.
- Locate the element: .cdc-site-gov-notice
- Confirm the axe-core finding for rule region.
Impact
Not captured by automated scan — requires manual testing.
Affected pages
- /finance/conference-report/2024-spending-report.html
- /vams/site.html
- /mmwr/volumes/72/ss/ss7208a1.htm
- /coronavirus/2019-ncov/daily-life-coping/animals.html
- /overdose-prevention/php/od2a/puerto-rico.html
- /mmwr/preview/mmwrhtml/mm6017a10.htm
- /pcd/issues/2008/jan/06_0153_zht.htm
- /mmwr/preview/mmwrhtml/mm4908a1.htm
- /mmwr/preview/mmwrhtml/mm5739a1.htm
- /pcd/issues/2022/21_0410a.htm
- /mmwr/preview/mmwrhtml/mm5748a3.htm
- /mmwr/preview/mmwrhtml/00038136.htm
- /mental-health/es/living-with/manejo-del-estres.html
- /mmwr/preview/ind1996_ss.html
- /wtc/petitions.html
- /niosh/npg/npgd0659.html
- /mmwr/preview/mmwrhtml/mm5453a1.htm
- /heartland-virus/prevention/index.html
- /funding/funding-profiles/index.html
- /mmwr/preview/mmwrhtml/mm5804a4.htm
- /mmwr/volumes/68/rr/rr6801a1.htm
- /salmonella/outbreaks/shell-eggs-07-26/locations.html
- /niosh/mining/partnerships/mssm.html
- /lung-cancer/risk-factors/index.html
- /tobacco/php/tobacco-industry-spending/index.html
…and more — all 2957 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.
See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/region?application=axeAPI
Link to this finding Serious axe label-title-only Best Practice Form elements should have a visible label (WCAG criterion undetermined) Likely template
- Bug ID
VS-6a5a6b06- Pattern ID
VS-33841929- Combined ID
VS-6a5a6b06(patternVS-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-W34 (11 wk)
HTML snippet — use this to validate the finding without re-running the tool
<input class="smallfield" type="text" name="email" size="15" title="插入電子郵件" value="插入電子郵件" onfocus="this.value=''">
Description
Form elements should have a visible label. Detected by axe-core rule label-title-only on 155 of 3332 scanned pages (155 instances).
Steps to reproduce
- Open http://www.cdc.gov/pcd/issues/2008/jan/06_0153_zht.htm.
- Locate the element: .smallfield
- Confirm the axe-core finding for rule label-title-only.
Impact
Not captured by automated scan — requires manual testing.
Affected pages
- /pcd/issues/2008/jan/06_0153_zht.htm
- /pcd/issues/2006/oct/06_0032_zht.htm
- /PCD/issues/2007/apr/06_0085_es.htm
- /pcd/issues/2008/jan/06_0170_zht.htm
- /pcd/issues/2008/apr/07_0039_zhs.htm
- /pcd/issues/2006/jan/05_0099_es.htm
- /pcd/issues/2010/mar/09_0095_es.htm
- /pcd/issues/2006/jan/05_0093_fr.htm
- /pcd/issues/2011/may/10_0105.htm
- /PCD/issues/2006/apr/05_0087_es.htm
- /pcd/issues/2010/jul/09_0249.htm
- /pcd/issues/2011/may/10_0036_es.htm
- /pcd/issues/2008/apr/07_0241.htm
- /pcd/issues/2008/jan/06_0156_zht.htm
- /pcd/issues/2008/apr/06_0122_zht.htm
- /pcd/issues/2005/jul/05_0023_zht.htm
- /pcd/issues/2009/apr/08_0123_es.htm
- /pcd/issues/2007/oct/06_0116_es.htm
- /pcd/issues/2011/may/10_0045.htm
- /pcd/issues/2008/oct/08_0077.htm
- /pcd/issues/2007/oct/07_0018.htm
- /pcd/issues/2005/oct/05_0168.htm
- /pcd/issues/2007/jan/06_0025_es.htm
- /pcd/issues/2009/apr/08_0049.htm
- /pcd/issues/2008/apr/07_0205_es.htm
…and more — all 155 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
Link to this finding Serious axe tabindex Best Practice Elements should not have tabindex greater than zero (WCAG criterion undetermined) Likely content
- Bug ID
VS-7e958f13- Pattern ID
VS-7430f84c- Combined ID
VS-7e958f13(patternVS-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
- Example URL
- http://www.cdc.gov/orr/ipp/etool-2023-2
- XPath / selector
#Slide62516accStr2- History
- first seen 2026-W24, last seen 2026-W34 (5 wk)
HTML snippet — use this to validate the finding without re-running the tool
<div id="Slide62516accStr2" tabindex="2400" style="transform: translate3d(0px, 0px, 0px); opacity: 0; width: 0px; height: 0px; left: -1999px; position: fixed;"><p style="transform: translate3d(0px, 0p
Description
Elements should not have tabindex greater than zero. Detected by axe-core rule tabindex on 1 of 3332 scanned pages (2 instances).
Steps to reproduce
- Open http://www.cdc.gov/orr/ipp/etool-2023-2.
- Locate the element: #Slide62516accStr2
- 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
Link to this finding 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) Likely template
- Bug ID
VS-8ceac419- Pattern ID
VS-179ad9b3- Combined ID
VS-8ceac419(patternVS-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-W34 (11 wk)
Description
Target size is at least 24×24 CSS pixels or has spacing (Minimum). Detected by Siteimprove Alfa rule sia-r113 on 271 of 3332 scanned pages (2634 instances).
Steps to reproduce
- Open http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4908a1.htm.
- Locate the element: <a href="#content_area">
- 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
- /mmwr/preview/mmwrhtml/mm4908a1.htm
- /mmwr/preview/mmwrhtml/00038136.htm
- /mmwr/preview/mmwrhtml/mm5453a1.htm
- /mmwr/preview/mmwrhtml/00049560.htm
- /mmwr/preview/mmwrhtml/00001877.htm
- /mmwr/preview/mmwrhtml/mm5242a6.htm
- /mmwr/preview/mmwrhtml/mm6115a3.htm
- /mmwr/preview/mmwrhtml/00001144.htm
- /niosh/npg/npgd0684.html
- /mmwr/preview/mmwrhtml/mm5601a3.htm
- /mmwr/preview/mmwrhtml/mm5314a2.htm
- /pcd/issues/2010/mar/09_0095_es.htm
- /mmwr/preview/mmwrhtml/00054832.htm
- /hepatitis-a/outbreaks/clams-2026/locations.html
- /asthma/brfss/02/default.htm
- /niosh/npg/npgd0398.html
- /mmwr/preview/mmwrhtml/mm5424a4.htm
- /mmwr/preview/mmwrhtml/ss5101a1.htm
- /mmwr/preview/mmwrhtml/mm5803a4.htm
- /niosh/ocas/pubm2011.html
- /PCD/issues/2006/apr/05_0087_es.htm
- /mmwr/preview/mmwrhtml/mm6331a2.htm
- /mmwr/preview/mmwrhtml/00050819.htm
- /mmwr/preview/mmwrhtml/mm6001a9.htm
- /dpdx/monthlycasestudies/2014/case363.html
…and more — all 271 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
Link to this finding Moderate alfa sia-r69 WCAG 2.0 AA Text has sufficient color contrast (Enhanced) (WCAG 1.4.3) Likely template
- Bug ID
VS-f3870e7e- Pattern ID
VS-f7e99f4b- Combined ID
VS-f3870e7e(patternVS-f7e99f4b) — use this format in JIRA/spreadsheets to filter by instance or pattern- WCAG category
- WCAG 2.0 AA
- Obligation
- required
- Handling
- review
- WCAG SC
- 1.4.3 Contrast (Minimum) (Level AA, WCAG 2.0)
- XPath / selector
text: "Related Pages"- History
- first seen 2026-W24, last seen 2026-W34 (11 wk)
Description
Text has sufficient color contrast (Enhanced). Detected by Siteimprove Alfa rule sia-r69 on 239 of 3332 scanned pages (1668 instances).
Steps to reproduce
- Open https://www.cdc.gov/heartland-virus/prevention/index.html.
- Locate the element: text: "Related Pages"
- 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
- /heartland-virus/prevention/index.html
- /lead-prevention/community-stories/madison-county-mo.html
- /lung-cancer/statistics/index.html
- /ncird/press-form/index.html
- /media/releases/2025/2025-cdc-warns-of-listeria-outbreak-linked-to-recalled-chicken-fettuccine-alfredo-meals.html
- /emerging-infections-program/php/about/index.html
- /niosh/motor-vehicle/constructionequipmentvisibilitydiagram/terex-tx760.html
- /hepatitis-a/outbreaks/clams-2026/locations.html
- /diabetes/health-equity/index.html
- /cancer/features/lung-cancer.html
- /yellow-book/hcp/health-care-abroad/medical-tourism.html
- /pertussis/hcp/clinical-care/index.html
- /bird-flu/spotlights/cdc-ohio-health-department.html
- /diabetes/spanish/living/eatright.html
- /niosh/healthcare/risk-factors/infectious-agents.html
- /nchs/linked-data/namcs/index.html
- /hivpartners/php/transcend/index.html
- /diabetes/burden-toolkit/state-burden-toolkit-health-burden.html
- /active-people-healthy-nation/php/multimedia-tools/social-media.html
- /ticks/data-research/facts-stats/index.html
- /measles/plan-for-travel.html
- /malaria/treatment/index.html
- /arthritis/gout/index.html
- /viral-hemorrhagic-fevers/php/partners/decontamination-and-waste-disposal-commercial-passenger-aircraft.html
- /typhus/about/scrub.html
…and more — all 239 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
Link to this finding Moderate alfa sia-r2 WCAG 2.0 A Image has accessible name (WCAG 1.1.1) Likely template
- Bug ID
VS-2be68f2a- Pattern ID
VS-a24eaa8c- Combined ID
VS-2be68f2a(patternVS-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-W34 (11 wk)
Description
Image has accessible name. Detected by Siteimprove Alfa rule sia-r2 on 160 of 3332 scanned pages (1725 instances).
Steps to reproduce
- Open http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4908a1.htm.
- Locate the element: <img src="../../images/spacer.gif" width="10" height="1" alt=" ">
- 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
- /mmwr/preview/mmwrhtml/mm4908a1.htm
- /mmwr/preview/mmwrhtml/00038136.htm
- /mmwr/preview/mmwrhtml/mm5453a1.htm
- /mmwr/preview/mmwrhtml/00049560.htm
- /mmwr/preview/mmwrhtml/00001877.htm
- /mmwr/preview/mmwrhtml/mm5242a6.htm
- /mmwr/preview/mmwrhtml/00001144.htm
- /mmwr/preview/mmwrhtml/mm5601a3.htm
- /mmwr/preview/mmwrhtml/mm5314a2.htm
- /pcd/issues/2010/mar/09_0095_es.htm
- /mmwr/preview/mmwrhtml/00054832.htm
- /mmwr/preview/mmwrhtml/mm5424a4.htm
- /mmwr/preview/mmwrhtml/ss5101a1.htm
- /mmwr/preview/mmwrhtml/mm5803a4.htm
- /PCD/issues/2006/apr/05_0087_es.htm
- /mmwr/preview/mmwrhtml/00050819.htm
- /mmwr/preview/mmwrhtml/00035709.htm
- /mmwr/volumes/66/wr/mm6620a4.htm
- /mmwr/preview/mmwrhtml/00039992.htm
- /pcd/issues/2007/oct/07_0018.htm
- /mmwr/preview/mmwrhtml/mm5138md.htm
- /pcd/issues/2005/oct/05_0168.htm
- /mmwr/preview/mmwrhtml/00055589.htm
- /mmwr/preview/mmwrhtml/00017393.htm
- /mmwr/preview/mmwrhtml/mm5431a2.htm
…and more — all 160 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
Link to this finding Moderate alfa sia-r4 WCAG 2.0 A Document has a valid lang attribute (WCAG 3.1.1) Likely template
- Bug ID
VS-cf047437- Pattern ID
VS-7a0e5645- Combined ID
VS-cf047437(patternVS-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-W34 (11 wk)
Description
Document has a valid lang attribute. Detected by Siteimprove Alfa rule sia-r4 on 156 of 3332 scanned pages (156 instances).
Steps to reproduce
- Open http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4908a1.htm.
- Locate the element: <html>
- 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
- /mmwr/preview/mmwrhtml/mm4908a1.htm
- /mmwr/preview/mmwrhtml/00038136.htm
- /mmwr/preview/mmwrhtml/mm5453a1.htm
- /mmwr/preview/mmwrhtml/00049560.htm
- /mmwr/preview/mmwrhtml/00001877.htm
- /mmwr/preview/mmwrhtml/mm5242a6.htm
- /flu/weekly/weeklyarchives2025-2026/data/senAllregt26.html
- /mmwr/preview/mmwrhtml/00001144.htm
- /mmwr/preview/mmwrhtml/mm5601a3.htm
- /mmwr/preview/mmwrhtml/mm5314a2.htm
- /pcd/issues/2010/mar/09_0095_es.htm
- /mmwr/preview/mmwrhtml/00054832.htm
- /mmwr/preview/mmwrhtml/mm5424a4.htm
- /mmwr/preview/mmwrhtml/ss5101a1.htm
- /mmwr/preview/mmwrhtml/mm5803a4.htm
- /PCD/issues/2006/apr/05_0087_es.htm
- /mmwr/preview/mmwrhtml/00050819.htm
- /mmwr/preview/mmwrhtml/00035709.htm
- /mmwr/preview/mmwrhtml/00039992.htm
- /pcd/issues/2007/oct/07_0018.htm
- /mmwr/preview/mmwrhtml/mm5138md.htm
- /pcd/issues/2005/oct/05_0168.htm
- /mmwr/preview/mmwrhtml/00055589.htm
- /mmwr/preview/mmwrhtml/00017393.htm
- /mmwr/preview/mmwrhtml/mm5431a2.htm
…and more — all 156 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
Link to this finding Moderate alfa sia-r68 WCAG 2.0 A Presentational children of an element are not focusable (WCAG 1.3.1) Likely template
- Bug ID
VS-9e73495f- Pattern ID
VS-d6097011- Combined ID
VS-9e73495f(patternVS-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-W34 (11 wk)
Description
Presentational children of an element are not focusable. Detected by Siteimprove Alfa rule sia-r68 on 76 of 3332 scanned pages (843 instances).
Steps to reproduce
- Open https://www.cdc.gov/lead-prevention/community-stories/madison-county-mo.html.
- Locate the element: <ul>
- 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
- /lead-prevention/community-stories/madison-county-mo.html
- /diabetes/health-equity/index.html
- /diabetes/spanish/living/eatright.html
- /mmwr/volumes/66/wr/mm6650md.htm
- /mmwr/preview/ind1994_ss.html
- /arthritis/gout/index.html
- /pcd/issues/2013/12_0256.htm
- /safe-labs/php/echo-biosafety-2023/biosafety-challenges-alaska.html
- /genomics-and-health/about/epigenetic-impacts-on-health.html
- /pcd/issues/2013/13_0028.htm
- /sickle-cell-research/php/about/scdc-capacity-building-sessions.html
- /infection-control/hcp/mdro-management/prevention-control.html
- /parasites/about/resources.html
- /clean-hands/es/about/acerca-del-lavado-de-las-manos.html
- /disability-and-health/health-well-being
- /thalassemia/hcp/toolkit/index.html
- /parasites/testing-diagnosis/index.html
- /library/research-guides/systematic-reviews.html
- /malaria/hcp/clinical-features/index.html
- /sore-throat/es/about/informacion-basica-sobre-el-dolor-de-garganta.html
- /oral-health/about/about-dental-fluorosis.html
- /advanced-molecular-detection/php/investments/texas.html
- /project-firstline/hcp/communication-resources/germs-live-body.html
- /niosh/outdoor-workers/about/poisonous-plants.html
- /vessel-sanitation/cruise-ship-outbreaks/radiance-of-the-seas-september-2024.html
…and more — all 76 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
Link to this finding Moderate alfa sia-r14 WCAG 2.1 A Accessible name of link or button matches visible label (WCAG 2.5.3) Likely template
- Bug ID
VS-3d39ded1- Pattern ID
VS-f7dba940- Combined ID
VS-3d39ded1(patternVS-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="/ncird/index.html" class="cdc-footer__super-title" aria-label="National Center for Immunization and Respiratory Diseases">- History
- first seen 2026-W24, last seen 2026-W34 (11 wk)
Description
Accessible name of link or button matches visible label. Detected by Siteimprove Alfa rule sia-r14 on 75 of 3332 scanned pages (139 instances).
Steps to reproduce
- Open https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/ncird/press-form/index.html.
- Locate the element: <a href="/ncird/index.html" class="cdc-footer__super-title" aria-label="National Center for Immunization and Respiratory Diseases">
- 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
- /ncird/press-form/index.html
- /niosh/docs/2023-108
- /diabetes/spanish/living/eatright.html
- /hivpartners/php/transcend/index.html
- /safe-labs/php/echo-biosafety-2023/biosafety-challenges-alaska.html
- /niosh/publications/es/hcp/numbered/2001-115sp.html
- /breastfeeding-data/mpinc-ten-step-toolkit/step-1.html
- /rdc/location-of-access/nchs-rdc.html
- /pneumonia/es/prevention/prevencion-y-control-de-la-neumonia.html
- /polio/es/vaccines/vacunacion-contra-la-poliomielitis.html
- /clean-hands/es/about/acerca-del-lavado-de-las-manos.html
- /hepatitis/hbv/perinatalxmtn.htm
- /spanish/niosh/docs/2011-123_sp/default.html
- /nis/php/datasets-child/index.html
- /es/disasters/hurricanes/workers.html
- /spanish/formatos.html
- /niosh/publications/es/numbered/2008-128sp.html
- /sore-throat/es/about/informacion-basica-sobre-el-dolor-de-garganta.html
- /bird-flu/communication-resources/ppe-high-exposure.html
- /diabetes/es/healthy-eating/opciones-de-carbohidratos.html
- /tobacco/campaign/tips/spanish/index.html
- /natural-disasters/teens/helping-teens-cope.html
- /vaccines-children/diseases
- /nchhstp/priorities/hiv-prevention.html
- /tobacco/campaign/tips/spanish/historias/becky.html
…and more — all 75 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
Link to this finding Moderate alfa sia-r11 WCAG 2.0 A Link has accessible name (WCAG 2.4.4) Likely template
- Bug ID
VS-64b3744d- Pattern ID
VS-28ebd979- Combined ID
VS-64b3744d(patternVS-28ebd979) — use this format in JIRA/spreadsheets to filter by instance or pattern- WCAG category
- WCAG 2.0 A
- Obligation
- required
- Handling
- review
- WCAG SC
- 2.4.4 Link Purpose (In Context) (Level A, WCAG 2.0)
- XPath / selector
<a href="http://www.cdc.gov/">- History
- first seen 2026-W24, last seen 2026-W34 (11 wk)
Description
Link has accessible name. Detected by Siteimprove Alfa rule sia-r11 on 69 of 3332 scanned pages (231 instances).
Steps to reproduce
- Open https://www.cdc.gov/pcd/issues/2010/mar/09_0095_es.htm.
- Locate the element: <a href="http://www.cdc.gov/">
- 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
- /pcd/issues/2010/mar/09_0095_es.htm
- /media/releases/2024/s0522-human-case-h5.html
- /PCD/issues/2006/apr/05_0087_es.htm
- /mmwr/preview/ind1994_ss.html
- /pcd/issues/2007/oct/07_0018.htm
- /pcd/issues/2018/18_0058.htm
- /pcd/issues/2005/oct/05_0168.htm
- /pcd/issues/2008/apr/07_0205_es.htm
- /niosh/publications/numbered/2014-120.html
- /pcd/issues/2006/jan/05_0131.htm
- /pcd/issues/2009/apr/08_0123a.htm
- /pcd/issues/2004/oct/04_0084.htm
- /nchs/injury/ice/washington2008/wdc_2008_participants.htm
- /PCD/issues/2008/apr/06_0186_es.htm
- /pcd/issues/2006/jan/05_0153_zht.htm
- /laboratory/specimen-submission/detail.html
- /pcd/issues/2009/jan/07_0267_zhs.htm
- /PCD/issues/2006/apr/05_0180_es.htm
- /niosh-rtecs/GT22B6B8.html
- /mmwr/volumes/66/wr/mm6624a1.htm
- /pcd/issues/2008/oct/07_0184.htm
- /parasites/education_training/education-training.html
- /mmwr/preview/mmwrhtml/rr5404a1.htm
- /PCD/issues/2006/apr/05_0139_es.htm
- /PCD/issues/2006/apr/05_0031_es.htm
…and more — all 69 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
Link to this finding Moderate alfa sia-r8 WCAG 2.0 A Form field has accessible name (WCAG 4.1.2) Likely template
- Bug ID
VS-8e9a1f8c- Pattern ID
VS-a48e6078- Combined ID
VS-8e9a1f8c(patternVS-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-W34 (11 wk)
Description
Form field has accessible name. Detected by Siteimprove Alfa rule sia-r8 on 45 of 3332 scanned pages (62 instances).
Steps to reproduce
- Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6115a3.htm?s_cid=mm6115a3_w.
- Locate the element: <input id="searchBox" class="searchBox" name="query" maxlength="256">
- 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
- /mmwr/preview/mmwrhtml/mm6115a3.htm
- /mmwr/preview/mmwrhtml/mm6331a2.htm
- /mmwr/preview/mmwrhtml/mm6001a9.htm
- /mmwr/preview/mmwrhtml/mm6041md.htm
- /mmwr/preview/ind1994_ss.html
- /mmwr/preview/mmwrhtml/mm6322a5.htm
- /mmwr/preview/mmwrhtml/mm6302a2.htm
- /mmwr/preview/mmwrhtml/mm6447a6.htm
- /mmwr/preview/mmwrhtml/mm6406a7.htm
- /mmwr/preview/mmwrhtml/mm6404a7.htm
- /mmwr/preview/mmwrhtml/mm5932a4.htm
- /tobacco/campaign/tips/quit-smoking/quit-smoking-medications/how-to-use-quit-smoking-medicines/index.html
- /mmwr/preview/mmwrhtml/mm6008a10.htm
- /mmwr/preview/mmwrhtml/mm5904a4.htm
- /mmwr/preview/mmwrhtml/mm6445a6.htm
- /mmwr/preview/mmwrhtml/mm6009a3.htm
- /mmwr/preview/mmwrhtml/mm6205a2.htm
- /mmwr/preview/mmwrhtml/mm5905a1.htm
- /mmwr/preview/mmwrhtml/mm6030a3.htm
- /mmwr/preview/mmwrhtml/mm6341a3.htm
- /mmwr/preview/mmwrhtml/mm6124a5.htm
- /mmwr/preview/mmwrhtml/mm6333a3.htm
- /mmwr/preview/mmwrhtml/mm6117a5.htm
- /mmwr/preview/mmwrhtml/mm6004a8.htm
- /mmwr/preview/mmwrhtml/mm5923a1.htm
…and more — all 45 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
Link to this finding Moderate alfa sia-r77 WCAG 2.0 A Table cell has header (WCAG 1.3.1) Likely template
- Bug ID
VS-2cb2508b- Pattern ID
VS-3f067795- Combined ID
VS-2cb2508b(patternVS-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-W34 (11 wk)
- Possible duplicate
- Same WCAG SC covered by axe report
VS-0fb66a73(patternVS-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 3332 scanned pages (5372 instances).
Steps to reproduce
- Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6041md.htm?s_cid=mm6041md_w.
- Locate the element: <td scope="row" class="infrequent-end-table-title" colspan="16">
- 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
- /mmwr/preview/mmwrhtml/mm6041md.htm
- /hepatitis/hbv/perinatalxmtn.htm
- /fluview/surveillance/2025-week-41.html
- /flu/weekly/weeklyarchives2023-2024/week30.htm
- /fluview/surveillance/2025-week-24.html
- /ems-community-paramedicine/php/data-research/table2b.html
- /pcd/issues/2004/jan/03_0015.htm
- /covidvaxview/publications/covid19-vaccination-high-risk-pregnancy.html
- /fluview/surveillance/2026-week-26.html
- /mmwr/preview/mmwrhtml/mm6039md.htm
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
Link to this finding Moderate axe heading-order Best Practice Heading levels should only increase by one (WCAG criterion undetermined) Likely template
- Bug ID
VS-c73ace8a- Pattern ID
VS-d25f622d- Combined ID
VS-c73ace8a(patternVS-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
.bg-white.card-body > h5- History
- first seen 2026-W24, last seen 2026-W34 (11 wk)
HTML snippet — use this to validate the finding without re-running the tool
<h5>Altmetric:</h5>
Description
Heading levels should only increase by one. Detected by axe-core rule heading-order on 962 of 3332 scanned pages (1364 instances).
Steps to reproduce
- Open https://www.cdc.gov/mmwr/volumes/72/ss/ss7208a1.htm.
- Locate the element: .bg-white.card-body > h5
- Confirm the axe-core finding for rule heading-order.
Impact
Not captured by automated scan — requires manual testing.
Affected pages
- /mmwr/volumes/72/ss/ss7208a1.htm
- /pcd/issues/2008/jan/06_0153_zht.htm
- /mmwr/preview/mmwrhtml/mm4908a1.htm
- /mmwr/preview/mmwrhtml/mm5739a1.htm
- /mmwr/preview/mmwrhtml/mm5748a3.htm
- /mmwr/preview/ind1996_ss.html
- /niosh/npg/npgd0659.html
- /mmwr/preview/mmwrhtml/mm5453a1.htm
- /mmwr/preview/mmwrhtml/mm5804a4.htm
- /mmwr/volumes/68/rr/rr6801a1.htm
- /mmwr/preview/mmwrhtml/00001877.htm
- /spanish/mediosdecomunicacion/comunicados/d_vs_ahogamiento_051424.html
- /mmwr/preview/mmwrhtml/00000306.htm
- /mmwr/preview/mmwrhtml/mm5342a3.htm
- /mmwr/preview/mmwrhtml/mm5242a6.htm
- /mmwr/preview/mmwrhtml/mm4842a5.htm
- /mmwr/volumes/73/rr/rr7305a1.htm
- /pcd/issues/2018/17_0377.htm
- /mmwr/preview/mmwrhtml/mm5748a1.htm
- /pcd/issues/2006/oct/06_0032_zht.htm
- /mmwr/indss_2001.html
- /mmwr/preview/mmwrhtml/00001144.htm
- /sickle-cell-research/php/transfusion-complications/social-media-graphics.html
- /mmwr/preview/mmwrhtml/mm4935a1.htm
- /niosh/npg/npgd0684.html
…and more — all 962 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.
See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/heading-order?application=axeAPI
Link to this finding Moderate axe landmark-one-main Best Practice Document should have one main landmark (WCAG criterion undetermined) Likely template
- Bug ID
VS-f3ea4fe3- Pattern ID
VS-d5d82446- Combined ID
VS-f3ea4fe3(patternVS-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-W34 (11 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 846 of 3332 scanned pages (846 instances).
Steps to reproduce
- Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6017a10.htm?s_cid=mm6017a10_w.
- Locate the element: #js
- Confirm the axe-core finding for rule landmark-one-main.
Impact
Not captured by automated scan — requires manual testing.
Affected pages
- /mmwr/preview/mmwrhtml/mm6017a10.htm
- /pcd/issues/2008/jan/06_0153_zht.htm
- /mmwr/preview/mmwrhtml/mm4908a1.htm
- /mmwr/preview/mmwrhtml/mm5739a1.htm
- /mmwr/preview/mmwrhtml/mm5748a3.htm
- /mmwr/preview/mmwrhtml/00038136.htm
- /mmwr/preview/ind1996_ss.html
- /wtc/petitions.html
- /mmwr/preview/mmwrhtml/mm5453a1.htm
- /mmwr/preview/mmwrhtml/mm5804a4.htm
- /mmwr/preview/mmwrhtml/00049560.htm
- /mmwr/preview/mmwrhtml/00001877.htm
- /mmwr/preview/mmwrhtml/00000306.htm
- /mmwr/preview/mmwrhtml/mm5342a3.htm
- /mmwr/preview/mmwrhtml/mm5242a6.htm
- /mmwr/preview/mmwrhtml/mm4842a5.htm
- /mmwr/preview/mmwrhtml/mm6115a3.htm
- /flu/weekly/weeklyarchives2025-2026/data/senAllregt26.html
- /mmwr/preview/mmwrhtml/mm5748a1.htm
- /pcd/issues/2006/oct/06_0032_zht.htm
- /mmwr/indss_2001.html
- /mmwr/preview/mmwrhtml/00001144.htm
- /mmwr/preview/mmwrhtml/mm6418a3.htm
- /mmwr/preview/mmwrhtml/mm4935a1.htm
- /mmwr/preview/mmwrhtml/mm6109a7.htm
…and more — all 846 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
Link to this finding Moderate axe landmark-unique Best Practice Landmarks should have a unique role or role/label/title (i.e. accessible name) c (WCAG criterion undetermined) Likely template
- Bug ID
VS-da188de9- Pattern ID
VS-8806389c- Combined ID
VS-da188de9(patternVS-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-W34 (11 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 814 of 3332 scanned pages (854 instances).
Steps to reproduce
- Open https://www.cdc.gov/finance/conference-report/2024-spending-report.html.
- Locate the element: .page-right-rail__static
- Confirm the axe-core finding for rule landmark-unique.
Impact
Not captured by automated scan — requires manual testing.
Affected pages
- /finance/conference-report/2024-spending-report.html
- /overdose-prevention/php/od2a/puerto-rico.html
- /mental-health/es/living-with/manejo-del-estres.html
- /niosh/mining/partnerships/mssm.html
- /lung-cancer/risk-factors/index.html
- /breastfeeding-data/mpinc-ten-step-toolkit/step-9.html
- /nora/councils/oil-gas.html
- /tobacco/php/data-statistics/youth-data-tobacco/index.html
- /ncird/press-form/index.html
- /healthy-pets/educational-materials/videos.html
- /emerging-infections-program/php/about/index.html
- /healthy-swimming/es/toolkit/pool-chemical-emergencies.html
- /niosh/motor-vehicle/constructionequipmentvisibilitydiagram/terex-tx760.html
- /ncird/divisions-offices/isd.html
- /nchs/products/visuals.htm
- /muscular-dystrophy/es/stories/vivir-con-distrofia-muscular.html
- /nndss/technical-resource-center/jurisdiction-map.html
- /bird-flu/hcp/clinicians-evaluating-patients
- /measles/es/vaccines/vacunacion-contra-el-sarampion.html
- /climate-health/php/regions/southwest.html
- /healthy-pets/travel/index.html
- /chagas/php/resources/index.html
- /dental-infection-control/hcp/dental-ipc-faqs/sterilization-monitoring.html
- /children-mental-health/data-research/index.html
- /about/advisory-committee-director/meetings.html
…and more — all 814 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
Link to this finding Moderate alfa sia-r111 WCAG 2.x AAA Target size is at least 44×44 CSS pixels (Enhanced) (WCAG 2.5.5) Likely template
- Bug ID
VS-4f3dc752- Pattern ID
VS-cb53cc4d- Combined ID
VS-4f3dc752(patternVS-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-W34 (11 wk)
Description
Target size is at least 44×44 CSS pixels (Enhanced). Detected by Siteimprove Alfa rule sia-r111 on 732 of 3332 scanned pages (22156 instances).
Steps to reproduce
- Open http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4908a1.htm.
- Locate the element: <a href="#content_area">
- 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
- /mmwr/preview/mmwrhtml/mm4908a1.htm
- /mmwr/preview/mmwrhtml/00038136.htm
- /mmwr/preview/mmwrhtml/mm5453a1.htm
- /heartland-virus/prevention/index.html
- /mmwr/preview/mmwrhtml/00049560.htm
- /mmwr/preview/mmwrhtml/00001877.htm
- /lead-prevention/community-stories/madison-county-mo.html
- /lung-cancer/statistics/index.html
- /mmwr/preview/mmwrhtml/mm5242a6.htm
- /ncird/press-form/index.html
- /mmwr/volumes/73/rr/rr7305a1.htm
- /mmwr/preview/mmwrhtml/mm6115a3.htm
- /media/releases/2025/2025-cdc-warns-of-listeria-outbreak-linked-to-recalled-chicken-fettuccine-alfredo-meals.html
- /niosh/docs/2023-108
- /emerging-infections-program/php/about/index.html
- /mmwr/preview/mmwrhtml/00001144.htm
- /sickle-cell-research/php/transfusion-complications/social-media-graphics.html
- /schoolvaxview/index.html
- /niosh/npg/npgd0684.html
- /niosh/motor-vehicle/constructionequipmentvisibilitydiagram/terex-tx760.html
- /mmwr/preview/mmwrhtml/mm5601a3.htm
- /niosh/docs/mining/works/coversheet600.html
- /mmwr/preview/mmwrhtml/mm5314a2.htm
- /injury-violence-prevention/programs/index.html
- /pcd/issues/2010/mar/09_0095_es.htm
…and more — all 732 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
Link to this finding Moderate alfa sia-r66 WCAG 2.x AAA Text has enhanced contrast (WCAG 1.4.6) Likely template
- Bug ID
VS-58afd9fd- Pattern ID
VS-646b1e0b- Combined ID
VS-58afd9fd(patternVS-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-W34 (11 wk)
Description
Text has enhanced contrast. Detected by Siteimprove Alfa rule sia-r66 on 616 of 3332 scanned pages (18829 instances).
Steps to reproduce
- Open https://www.cdc.gov/heartland-virus/prevention/index.html.
- Locate the element: text: " Here's how you know "
- 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
- /heartland-virus/prevention/index.html
- /lead-prevention/community-stories/madison-county-mo.html
- /lung-cancer/statistics/index.html
- /ncird/press-form/index.html
- /mmwr/volumes/73/rr/rr7305a1.htm
- /mmwr/preview/mmwrhtml/mm6115a3.htm
- /media/releases/2025/2025-cdc-warns-of-listeria-outbreak-linked-to-recalled-chicken-fettuccine-alfredo-meals.html
- /niosh/docs/2023-108
- /emerging-infections-program/php/about/index.html
- /sickle-cell-research/php/transfusion-complications/social-media-graphics.html
- /schoolvaxview/index.html
- /niosh/npg/npgd0684.html
- /niosh/motor-vehicle/constructionequipmentvisibilitydiagram/terex-tx760.html
- /niosh/docs/mining/works/coversheet600.html
- /injury-violence-prevention/programs/index.html
- /pcd/issues/2010/mar/09_0095_es.htm
- /hepatitis-a/outbreaks/clams-2026/locations.html
- /asthma/brfss/02/default.htm
- /diabetes/health-equity/index.html
- /cancer/features/lung-cancer.html
- /niosh/npg/npgd0398.html
- /yellow-book/hcp/health-care-abroad/medical-tourism.html
- /nchs/w2w/oregon.htm
- /mmwr/volumes/72/wr/mm7216a3.htm
- /mmwr/volumes/69/wr/mm6950a2.htm
…and more — all 616 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
Link to this finding Moderate alfa sia-r57 Undetermined Scrolling content can be accessed by keyboard (WCAG criterion undetermined) Likely template
- Bug ID
VS-6083be58- Pattern ID
VS-c18be945- Combined ID
VS-6083be58(patternVS-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-W34 (11 wk)
Description
Scrolling content can be accessed by keyboard. Detected by Siteimprove Alfa rule sia-r57 on 523 of 3332 scanned pages (7807 instances).
Steps to reproduce
- Open https://www.cdc.gov/heartland-virus/prevention/index.html.
- Locate the element: text: "Skip directly to search"
- Confirm the Siteimprove Alfa finding for rule sia-r57.
Impact
Not captured by automated scan — requires manual testing.
Affected pages
- /heartland-virus/prevention/index.html
- /lead-prevention/community-stories/madison-county-mo.html
- /lung-cancer/statistics/index.html
- /ncird/press-form/index.html
- /mmwr/volumes/73/rr/rr7305a1.htm
- /media/releases/2025/2025-cdc-warns-of-listeria-outbreak-linked-to-recalled-chicken-fettuccine-alfredo-meals.html
- /niosh/docs/2023-108
- /emerging-infections-program/php/about/index.html
- /sickle-cell-research/php/transfusion-complications/social-media-graphics.html
- /schoolvaxview/index.html
- /niosh/npg/npgd0684.html
- /niosh/motor-vehicle/constructionequipmentvisibilitydiagram/terex-tx760.html
- /niosh/docs/mining/works/coversheet600.html
- /injury-violence-prevention/programs/index.html
- /hepatitis-a/outbreaks/clams-2026/locations.html
- /asthma/brfss/02/default.htm
- /diabetes/health-equity/index.html
- /cancer/features/lung-cancer.html
- /niosh/npg/npgd0398.html
- /yellow-book/hcp/health-care-abroad/medical-tourism.html
- /nchs/w2w/oregon.htm
- /mmwr/volumes/72/wr/mm7216a3.htm
- /mmwr/volumes/69/wr/mm6950a2.htm
- /pertussis/hcp/clinical-care/index.html
- /bird-flu/spotlights/cdc-ohio-health-department.html
…and more — all 523 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
Link to this finding Moderate alfa sia-r18 Undetermined aria attribute is permitted for element role (WCAG criterion undetermined) Likely template
- Bug ID
VS-82d17203- Pattern ID
VS-e05344b9- Combined ID
VS-82d17203(patternVS-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-W34 (11 wk)
Description
aria attribute is permitted for element role. Detected by Siteimprove Alfa rule sia-r18 on 371 of 3332 scanned pages (374 instances).
Steps to reproduce
- Open https://www.cdc.gov/heartland-virus/prevention/index.html.
- Locate the element: @aria-label="Official website of the United States government"
- Confirm the Siteimprove Alfa finding for rule sia-r18.
Impact
Not captured by automated scan — requires manual testing.
Affected pages
- /heartland-virus/prevention/index.html
- /lead-prevention/community-stories/madison-county-mo.html
- /lung-cancer/statistics/index.html
- /ncird/press-form/index.html
- /media/releases/2025/2025-cdc-warns-of-listeria-outbreak-linked-to-recalled-chicken-fettuccine-alfredo-meals.html
- /niosh/docs/2023-108
- /emerging-infections-program/php/about/index.html
- /sickle-cell-research/php/transfusion-complications/social-media-graphics.html
- /schoolvaxview/index.html
- /niosh/motor-vehicle/constructionequipmentvisibilitydiagram/terex-tx760.html
- /niosh/docs/mining/works/coversheet600.html
- /injury-violence-prevention/programs/index.html
- /hepatitis-a/outbreaks/clams-2026/locations.html
- /diabetes/health-equity/index.html
- /cancer/features/lung-cancer.html
- /yellow-book/hcp/health-care-abroad/medical-tourism.html
- /pertussis/hcp/clinical-care/index.html
- /bird-flu/spotlights/cdc-ohio-health-department.html
- /niosh/ptd/site.html
- /diabetes/spanish/living/eatright.html
- /niosh/docs/mining/works/coversheet354.html
- /niosh/healthcare/risk-factors/infectious-agents.html
- /niosh/docs/2024-107/default.html
- /child-development/disability-safety
- /nchs/linked-data/namcs/index.html
…and more — all 371 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
Link to this finding Moderate alfa sia-r74 WCAG 2.x AAA Link is distinguishable without relying on color (WCAG 1.4.8) Likely template
- Bug ID
VS-f7d28dec- Pattern ID
VS-fbf54eba- Combined ID
VS-f7d28dec(patternVS-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-W34 (11 wk)
Description
Link is distinguishable without relying on color. Detected by Siteimprove Alfa rule sia-r74 on 302 of 3332 scanned pages (1931 instances).
Steps to reproduce
- Open http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4908a1.htm.
- Locate the element: <p style="font-family: Arial, Helvetica, sans-serif; font-size: 8pt; color: #333333;">
- 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
- /mmwr/preview/mmwrhtml/mm4908a1.htm
- /mmwr/preview/mmwrhtml/00038136.htm
- /mmwr/preview/mmwrhtml/mm5453a1.htm
- /mmwr/preview/mmwrhtml/00049560.htm
- /mmwr/preview/mmwrhtml/00001877.htm
- /mmwr/preview/mmwrhtml/mm5242a6.htm
- /mmwr/preview/mmwrhtml/mm6115a3.htm
- /niosh/docs/2023-108
- /mmwr/preview/mmwrhtml/00001144.htm
- /niosh/motor-vehicle/constructionequipmentvisibilitydiagram/terex-tx760.html
- /mmwr/preview/mmwrhtml/mm5601a3.htm
- /niosh/docs/mining/works/coversheet600.html
- /mmwr/preview/mmwrhtml/mm5314a2.htm
- /pcd/issues/2010/mar/09_0095_es.htm
- /mmwr/preview/mmwrhtml/00054832.htm
- /mmwr/preview/mmwrhtml/mm5424a4.htm
- /mmwr/preview/mmwrhtml/ss5101a1.htm
- /mmwr/preview/mmwrhtml/mm5803a4.htm
- /niosh/ptd/site.html
- /PCD/issues/2006/apr/05_0087_es.htm
- /niosh/docs/mining/works/coversheet354.html
- /niosh/healthcare/risk-factors/infectious-agents.html
- /niosh/docs/2024-107/default.html
- /nchs/linked-data/namcs/index.html
- /mmwr/preview/mmwrhtml/mm6331a2.htm
…and more — all 302 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
Link to this finding Moderate alfa sia-r73 WCAG 2.x AAA Text has minimum contrast ratio of 4.5:1 (WCAG 1.4.8) Likely template
- Bug ID
VS-8b1be1a0- Pattern ID
VS-2208081b- Combined ID
VS-8b1be1a0(patternVS-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-W34 (11 wk)
Description
Text has minimum contrast ratio of 4.5:1. Detected by Siteimprove Alfa rule sia-r73 on 251 of 3332 scanned pages (42107 instances).
Steps to reproduce
- Open http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4908a1.htm.
- Locate the element: <p>
- 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
- /mmwr/preview/mmwrhtml/mm4908a1.htm
- /mmwr/preview/mmwrhtml/00038136.htm
- /mmwr/preview/mmwrhtml/mm5453a1.htm
- /mmwr/preview/mmwrhtml/00049560.htm
- /mmwr/preview/mmwrhtml/00001877.htm
- /mmwr/preview/mmwrhtml/mm5242a6.htm
- /mmwr/preview/mmwrhtml/mm6115a3.htm
- /mmwr/preview/mmwrhtml/00001144.htm
- /mmwr/preview/mmwrhtml/mm5601a3.htm
- /mmwr/preview/mmwrhtml/mm5314a2.htm
- /pcd/issues/2010/mar/09_0095_es.htm
- /mmwr/preview/mmwrhtml/00054832.htm
- /mmwr/preview/mmwrhtml/mm5424a4.htm
- /mmwr/preview/mmwrhtml/ss5101a1.htm
- /mmwr/preview/mmwrhtml/mm5803a4.htm
- /PCD/issues/2006/apr/05_0087_es.htm
- /mmwr/volumes/66/wr/mm6650md.htm
- /mmwr/preview/mmwrhtml/mm6331a2.htm
- /mmwr/preview/mmwrhtml/00050819.htm
- /mmwr/preview/mmwrhtml/mm6001a9.htm
- /mmwr/preview/mmwrhtml/mm6041md.htm
- /mmwr/preview/ind1994_ss.html
- /mmwr/preview/mmwrhtml/00035709.htm
- /mmwr/volumes/66/wr/mm6642a11.htm
- /mmwr/volumes/66/wr/mm6620a4.htm
…and more — all 251 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
Link to this finding Moderate alfa sia-r53 Undetermined Headings are structured hierarchically (WCAG criterion undetermined) Likely template
- Bug ID
VS-e58f18de- Pattern ID
VS-f054f4a4- Combined ID
VS-e58f18de(patternVS-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-W34 (11 wk)
Description
Headings are structured hierarchically. Detected by Siteimprove Alfa rule sia-r53 on 234 of 3332 scanned pages (321 instances).
Steps to reproduce
- Open http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4908a1.htm.
- Locate the element: <h3>
- Confirm the Siteimprove Alfa finding for rule sia-r53.
Impact
Not captured by automated scan — requires manual testing.
Affected pages
- /mmwr/preview/mmwrhtml/mm4908a1.htm
- /mmwr/preview/mmwrhtml/mm5453a1.htm
- /mmwr/preview/mmwrhtml/00001877.htm
- /mmwr/preview/mmwrhtml/mm5242a6.htm
- /mmwr/volumes/73/rr/rr7305a1.htm
- /mmwr/preview/mmwrhtml/00001144.htm
- /sickle-cell-research/php/transfusion-complications/social-media-graphics.html
- /niosh/npg/npgd0684.html
- /mmwr/preview/mmwrhtml/mm5601a3.htm
- /mmwr/preview/mmwrhtml/mm5314a2.htm
- /pcd/issues/2010/mar/09_0095_es.htm
- /mmwr/preview/mmwrhtml/00054832.htm
- /niosh/npg/npgd0398.html
- /mmwr/volumes/72/wr/mm7216a3.htm
- /mmwr/preview/mmwrhtml/mm5424a4.htm
- /mmwr/volumes/69/wr/mm6950a2.htm
- /mmwr/preview/mmwrhtml/ss5101a1.htm
- /mmwr/preview/mmwrhtml/mm5803a4.htm
- /niosh/ocas/pubm2011.html
- /media/releases/2024/s0522-human-case-h5.html
- /PCD/issues/2006/apr/05_0087_es.htm
- /mmwr/volumes/74/wr/mm7432a1.htm
- /mmwr/preview/ind1994_ss.html
- /mmwr/preview/mmwrhtml/00035709.htm
- /mmwr/volumes/71/wr/mm7137a4.htm
…and more — all 234 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
Link to this finding Moderate alfa sia-r70 Undetermined No obsolete or deprecated elements are used (WCAG criterion undetermined) Likely template
- Bug ID
VS-8007b2bd- Pattern ID
VS-3d033717- Combined ID
VS-8007b2bd(patternVS-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-W34 (11 wk)
Description
No obsolete or deprecated elements are used. Detected by Siteimprove Alfa rule sia-r70 on 189 of 3332 scanned pages (189 instances).
Steps to reproduce
- Open http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4908a1.htm.
- Locate the element: {"type":"document","children":[{"type":"element","children":[{"type":"element","
- Confirm the Siteimprove Alfa finding for rule sia-r70.
Impact
Not captured by automated scan — requires manual testing.
Affected pages
- /mmwr/preview/mmwrhtml/mm4908a1.htm
- /mmwr/preview/mmwrhtml/00038136.htm
- /mmwr/preview/mmwrhtml/mm5453a1.htm
- /mmwr/preview/mmwrhtml/00049560.htm
- /mmwr/preview/mmwrhtml/00001877.htm
- /mmwr/preview/mmwrhtml/mm5242a6.htm
- /mmwr/preview/mmwrhtml/mm6115a3.htm
- /mmwr/preview/mmwrhtml/00001144.htm
- /mmwr/preview/mmwrhtml/mm5601a3.htm
- /mmwr/preview/mmwrhtml/mm5314a2.htm
- /pcd/issues/2010/mar/09_0095_es.htm
- /mmwr/preview/mmwrhtml/00054832.htm
- /mmwr/preview/mmwrhtml/mm5424a4.htm
- /mmwr/preview/mmwrhtml/ss5101a1.htm
- /mmwr/preview/mmwrhtml/mm5803a4.htm
- /PCD/issues/2006/apr/05_0087_es.htm
- /mmwr/preview/mmwrhtml/00050819.htm
- /mmwr/preview/mmwrhtml/mm6001a9.htm
- /mmwr/preview/mmwrhtml/mm6041md.htm
- /mmwr/preview/mmwrhtml/00035709.htm
- /mmwr/preview/mmwrhtml/00039992.htm
- /pcd/issues/2007/oct/07_0018.htm
- /mmwr/preview/mmwrhtml/mm5138md.htm
- /pcd/issues/2005/oct/05_0168.htm
- /mmwr/preview/mmwrhtml/00055589.htm
…and more — all 189 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
Link to this finding Minor axe aria-allowed-role Best Practice ARIA role should be appropriate for the element (WCAG criterion undetermined) Likely template
- Bug ID
VS-c02c3e45- Pattern ID
VS-4fac2f41- Combined ID
VS-c02c3e45(patternVS-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
- Example URL
- http://www.cdc.gov/wtc/petitions.html
- XPath / selector
.btn-srch- History
- first seen 2026-W24, last seen 2026-W34 (11 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 146 of 3332 scanned pages (170 instances).
Steps to reproduce
- Open http://www.cdc.gov/wtc/petitions.html.
- Locate the element: .btn-srch
- Confirm the axe-core finding for rule aria-allowed-role.
Impact
Not captured by automated scan — requires manual testing.
Affected pages
- /wtc/petitions.html
- /spanish/niosh/docs/2007-175_sp
- /niosh/docs/mining/works/coversheet354.html
- /niosh/docs/2011-152
- /niosh/docs/2021-112
- /niosh/publications/numbered/2011-146.html
- /niosh/docs/2024-107/default.html
- /spanish/NIOSH/docs/2011-199_sp
- /spanish/niosh/docs/2013-138_sp
- /ebola/hcp/communication-resources/think-ebola-early-recognition-is-critical-for-infection-control.html
- /niosh/publications/es/hcp/numbered/2006-117sp.html
- /spanish/niosh/docs/2007-151_sp
- /spanish/NIOSH/docs/wp-solutions/2013-143_sp
- /niosh/publications/es/hcp/numbered/2001-115sp.html
- /niosh/docs/mining/works/coversheet1962.html
- /niosh/docs/2025-109
- /niosh/publications/numbered/2014-120.html
- /niosh/publications/es/numbered/2011-202sp.html
- /spanish/NIOSH/docs/wp-solutions/2009-115_sp
- /niosh/docs/2016-101
- /niosh/docs/mining/works/coversheet1893.html
- /vaccines/php/resources/from-me-to-you.html
- /niosh/publications/numbered/2015-100.html
- /niosh/docs/2025-106
- /niosh/docs/2016-172
…and more — all 146 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
Link to this finding Moderate axe page-has-heading-one Best Practice Page should contain a level-one heading (WCAG criterion undetermined) Likely template
- Bug ID
VS-1530437c- Pattern ID
VS-fa44f293- Combined ID
VS-1530437c(patternVS-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
- Example URL
- https://www.cdc.gov/vams/site.html
- XPath / selector
html- History
- first seen 2026-W24, last seen 2026-W34 (11 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 118 of 3332 scanned pages (118 instances).
Steps to reproduce
- Open https://www.cdc.gov/vams/site.html.
- Locate the element: html
- Confirm the axe-core finding for rule page-has-heading-one.
Impact
Not captured by automated scan — requires manual testing.
Affected pages
- /vams/site.html
- /flu/weekly/weeklyarchives2025-2026/data/senAllregt26.html
- /phap/site.html
- /angiostrongylus/index.html
- /schoolvaxview/index.html
- /skin-cancer/index.html
- /about/index.html
- /niosh/ptd/site.html
- /mmwr/volumes/66/wr/mm6650md.htm
- /cancer-survivors/site.html
- /vaginal-vulvar-cancers/es/index.html
- /vaginal-vulvar-cancers/es/site.html
- /stophivtogether/partnerships/toolkit/talk-hiv.html
- /vibrio/site.html
- /vaccines-children/site.html
- /stop-overdose/site.html
- /trichinellosis/site.html
- /lice/index.html
- /labs/site.html
- /flu/weekly/weeklyarchives2025-2026/data/whoAllregt_cl45.html
- /mmwr/volumes/66/wr/mm6644md.htm
- /flu/protect/preventing.htm
- /family-health-history/site.html
- /elearning-institute/site.html
- /classroom-management/index.html
…and more — all 118 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
Link to this finding Moderate deprecated-html presentational-attr Undetermined Presentational attribute (use CSS) (WCAG criterion undetermined) Likely template
- Bug ID
VS-8ee1d1a8- Pattern ID
VS-04a9d28c- Combined ID
VS-8ee1d1a8(patternVS-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)
- XPath / selector
body- History
- first seen 2026-W24, last seen 2026-W34 (11 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 102 of 3332 scanned pages (12044 instances).
Steps to reproduce
- Open http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5342a3.htm.
- Locate the element: body
- Confirm the deprecated-html finding for rule presentational-attr.
Impact
Not captured by automated scan — requires manual testing.
Affected pages
- /mmwr/preview/mmwrhtml/mm5342a3.htm
- /mmwr/preview/mmwrhtml/mm5242a6.htm
- /mmwr/preview/mmwrhtml/mm4935a1.htm
- /pcd/issues/2006/jan/05_0093_fr.htm
- /pcd/issues/2012/11_0144_es.htm
- /PCD/issues/2006/apr/05_0087_es.htm
- /mmwr/volumes/74/wr/mm7432a1.htm
- /mmwr/preview/mmwrhtml/00035709.htm
- /stophivtogether/partnerships/toolkit/talk-hiv.html
- /pcd/issues/2009/apr/08_0123_es.htm
- /pcd/issues/2007/oct/07_0018.htm
- /pcd/issues/2007/jan/06_0025_es.htm
- /mmwr/preview/mmwrhtml/mm5645md.htm
- /mmwr/preview/mmwrhtml/00017393.htm
- /mmwr/preview/mmwrhtml/mm5431a2.htm
- /mmwr/preview/mmwrhtml/mm5713a2.htm
- /mmwr/volumes/71/su/su7103a1.htm
- /mmwR/preview/mmwrhtml/mm5848a4.htm
- /mmwr/volumes/73/wr/mm7307a1.htm
- /mmwr/preview/mmwrhtml/mm5634a5.htm
- /mmwr/preview/mmwrhtml/00038049.htm
- /flu/weekly/weeklyarchives2025-2026/data/whoAllregt_cl45.html
- /mmwr/preview/mmwrhtml/00016525.htm
- /mmwr/preview/mmwrhtml/mm5046a6.htm
- /brfss/acbs/2022/prevalence_tables/table5_LLCP.html
…and more — all 102 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.
Link to this finding Moderate alfa sia-r61 Undetermined Form field label is visible (WCAG criterion undetermined) Likely template
- Bug ID
VS-9a1fc99d- Pattern ID
VS-7118fead- Combined ID
VS-9a1fc99d(patternVS-7118fead) — use this format in JIRA/spreadsheets to filter by instance or pattern- WCAG category
- Undetermined
- Obligation
- unmapped
- Handling
- review
- WCAG SC
- undetermined
- XPath / selector
{"type":"document","children":[{"type":"type","name":"html","publicId":"-//W3C//- History
- first seen 2026-W24, last seen 2026-W34 (11 wk)
Description
Form field label is visible. Detected by Siteimprove Alfa rule sia-r61 on 71 of 3332 scanned pages (71 instances).
Steps to reproduce
- Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6115a3.htm?s_cid=mm6115a3_w.
- Locate the element: {"type":"document","children":[{"type":"type","name":"html","publicId":"-//W3C//
- Confirm the Siteimprove Alfa finding for rule sia-r61.
Impact
Not captured by automated scan — requires manual testing.
Affected pages
- /mmwr/preview/mmwrhtml/mm6115a3.htm
- /schoolvaxview/index.html
- /niosh/ptd/site.html
- /mmwr/preview/mmwrhtml/mm6331a2.htm
- /mmwr/preview/mmwrhtml/mm6001a9.htm
- /mmwr/preview/mmwrhtml/mm6041md.htm
- /pcd/issues/2013/12_0256.htm
- /mmwr/preview/mmwrhtml/mm6322a5.htm
- /mmwr/preview/mmwrhtml/mm6302a2.htm
- /trichinellosis/site.html
- /pcd/issues/2013/13_0028.htm
- /mmwr/preview/mmwrhtml/mm6447a6.htm
- /mmwr/preview/mmwrhtml/mm6406a7.htm
- /mmwr/preview/mmwrhtml/mm6404a7.htm
- /mmwr/preview/mmwrhtml/mm5932a4.htm
- /epilepsy/site.html
- /aging-programs
- /mmwr/preview/mmwrhtml/mm6008a10.htm
- /mmwr/preview/mmwrhtml/mm5904a4.htm
- /tb-data/index.html
- /mmwr/preview/mmwrhtml/mm6445a6.htm
- /mmwr/preview/mmwrhtml/mm6009a3.htm
- /ohhabs/site.html
- /mmwr/preview/mmwrhtml/mm6205a2.htm
- /mmwr/preview/mmwrhtml/mm5905a1.htm
…and more — all 71 pages (CSV).
Testing environment
Automated: Siteimprove Alfa, headless Chromium (Playwright). Manual AT verification: Not captured by automated scan — requires manual testing.
Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r61
Link to this finding Moderate deprecated-html font-element Undetermined Obsolete <font> element (use CSS) (WCAG criterion undetermined) Likely template
- Bug ID
VS-f2139b75- Pattern ID
VS-91d2294a- Combined ID
VS-f2139b75(patternVS-91d2294a) — use this format in JIRA/spreadsheets to filter by instance or pattern- WCAG category
- Undetermined
- Obligation
- unmapped
- Handling
- review
- WCAG SC
- undetermined
- Rule
- deprecated-html — Obsolete <font> element (use CSS)
- XPath / selector
font- History
- first seen 2026-W24, last seen 2026-W34 (11 wk)
HTML snippet — use this to validate the finding without re-running the tool
<font size="3" face="Arial, Helvetica, Verdana" color="#FFFFFF"><i><b>Weekly</b></i></font>
Description
Obsolete <font> element (use CSS). Detected by deprecated-html rule font-element on 64 of 3332 scanned pages (523 instances).
Steps to reproduce
- Open http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5342a3.htm.
- Locate the element: font
- Confirm the deprecated-html finding for rule font-element.
Impact
Not captured by automated scan — requires manual testing.
Affected pages
- /mmwr/preview/mmwrhtml/mm5342a3.htm
- /mmwr/preview/mmwrhtml/mm5242a6.htm
- /mmwr/preview/mmwrhtml/mm4935a1.htm
- /mmwr/preview/mmwrhtml/00035709.htm
- /mmwr/preview/mmwrhtml/mm5645md.htm
- /mmwr/preview/mmwrhtml/00017393.htm
- /mmwr/preview/mmwrhtml/mm5431a2.htm
- /mmwr/preview/mmwrhtml/mm5713a2.htm
- /mmwR/preview/mmwrhtml/mm5848a4.htm
- /mmwr/preview/mmwrhtml/mm5634a5.htm
- /mmwr/preview/mmwrhtml/00038049.htm
- /mmwr/preview/mmwrhtml/00016525.htm
- /mmwr/preview/mmwrhtml/mm5046a6.htm
- /mmwr/preview/mmwrhtml/00036818.htm
- /mmwr/preview/mmwrhtml/00001211.htm
- /mmwr/preview/mmwrhtml/00022306.htm
- /mmwr/preview/mmwrhtml/mm6008a10.htm
- /flu/weekly/weeklyarchives2023-2024/NCHS24.html
- /mmwr/preview/mmwrhtml/mm6132a3.htm
- /mmwr/preview/mmwrhtml/mm6009a3.htm
- /mmwr/preview/mmwrhtml/mm5520a4.htm
- /mmwr/preview/mmwrhtml/mm5850a3.htm
- /mmwr/preview/mmwrhtml/00046433.htm
- /mmwr/preview/mmwrhtml/mm4829a5.htm
- /mmwr/preview/mmwrhtml/00036634.htm
…and more — all 64 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.
No issues match the current filters.
26 more lower-priority finding(s) — summary only
Full detail — steps, affected pages, snippets — for these and every finding is in the CSV.
Deque axe-core findings
Rule-level axe-core summary (35 rule type(s))
Siteimprove Alfa findings
Rule-level Alfa summary (36 rule type(s))
Unique accessibility issues (axe + Alfa consolidated)
- Unique issues (rule × page)
- 12709
- Caught by both engines
- 438
- axe only
- 8188
- Alfa only
- 4083