vital-scans open kwaliteitsregister

www.cdc.gov: Toegankelijkheid — week 2026-W40

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

Training priorities

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

SCCriterionPagesRulesNotes
1.4.3 Contrast (Minimum) 463 2
3.1.1 Language of Page 425 2
1.1.1 Non-text Content (images, icons) 423 2
2.5.5 WCAG 2.5.5 416 1
1.4.6 WCAG 1.4.6 355 1

Volgende 10 acties

Clusters krijgen een vingerafdruk via genormaliseerd selectorpad + regel-id + snippetvorm. Rangscore = (ernstgewicht × getroffen pagina's) / verschillende componenten voor de regel. Dit vervangt de template-drempelheuristiek, maar behoudt die als validatiesignaal.

Top 10 geclusterde componentoplossingen voor deze week.
ClusterErnstPagina'sWie het treftHoe op te lossenBewijsBeslissing
<html> element must have a lang attribute · niet-toegewezen component
Fix one place, resolve ~340 finding(s) on 340 page(s).
XPath / selector: html
<html>
 Ernstig 340 Without vision, Limited cognitive, language, or learning ability Add a lang attribute to <html> (e.g. lang="en"). pagina's (CSV)
Document should have one main landmark · niet-toegewezen component
Fix one place, resolve ~362 finding(s) on 362 page(s).
XPath / selector: html
<html>
 Matig 362 Vereist handmatige test. Each page should have exactly one <main> landmark. pagina's (CSV)
Page should contain a level-one heading · niet-toegewezen component
Fix one place, resolve ~152 finding(s) on 152 page(s).
XPath / selector: html
<html lang="en-us" class="cdc-theme-cdc cdc-root-home cdc-page-type--2024home">
 Matig 152 Vereist handmatige test. See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/page-has-heading-one?application=axeAPI pagina's (CSV)
Form elements should have a visible label · niet-toegewezen component
Fix one place, resolve ~95 finding(s) on 95 page(s).
XPath / selector: .smallfield
<input class="smallfield" type="text" name="email" size="15" title="插入电子邮件" value="插入电子邮件" onfocus="this.value=''">
 Ernstig 95 Vereist handmatige test. See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/label-title-only?application=axeAPI pagina's (CSV)
Contentinfo landmark should not be contained in another landmark · niet-toegewezen component
Fix one place, resolve ~93 finding(s) on 93 page(s).
XPath / selector: .cdc-footer > footer
<footer>
 Matig 93 Vereist handmatige test. See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/landmark-contentinfo-is-top-level?application=axeAPI pagina's (CSV)
Document should not have more than one banner landmark · niet-toegewezen component
Fix one place, resolve ~93 finding(s) on 93 page(s).
XPath / selector: .cdc-header
<header class="container cdc-header">
 Matig 93 Vereist handmatige test. Use only one banner landmark (<header> at the top level) per page. pagina's (CSV)
Document should not have more than one contentinfo landmark · niet-toegewezen component
Fix one place, resolve ~93 finding(s) on 93 page(s).
XPath / selector: .cdc-footer
<footer class="container cdc-footer noindex" role="contentinfo">
 Matig 93 Vereist handmatige test. Use only one contentinfo landmark (<footer> at the top level) per page. pagina's (CSV)
Document has a valid lang attribute · niet-toegewezen component
Fix one place, resolve ~85 finding(s) on 85 page(s).
XPath / selector: <html>
 Matig 85 Without vision, Limited cognitive, language, or learning ability Add a valid lang attribute to <html>. pagina's (CSV)
Elements should not have tabindex greater than zero · niet-toegewezen component
Fix one place, resolve ~93 finding(s) on 93 page(s).
XPath / selector: a[href$="#content"]
<a class="skippy visually-hidden-focusable" href="#content" tabindex="1">Skip to site content</a>
 Ernstig 93 Vereist handmatige test. Avoid tabindex values greater than 0; they create a confusing tab order. pagina's (CSV)
Elements should not have tabindex greater than zero · niet-toegewezen component
Fix one place, resolve ~93 finding(s) on 93 page(s).
XPath / selector: a[href$="#headerSearch"]
<a class="skippy visually-hidden-focusable" href="#headerSearch" tabindex="2">Skip to search</a>
 Ernstig 93 Vereist handmatige test. Avoid tabindex values greater than 0; they create a confusing tab order. pagina's (CSV)

Foutrapporten

30 probleemtype(n) worden standaard getoond van in totaal 78. Geprioriteerd op ernst, belangrijke pagina's, WCAG-niveau en prevalentie; gebruik de schakelaar om alles te tonen.

Algehele verdeling van ernst: 5 kritiek, 17 ernstig, 51 matig, 5 gering. Per WCAG-categorie: 30 WCAG 2.0 A, 2 WCAG 2.0 AA, 1 WCAG 2.1 A, 1 WCAG 2.2 AA, 5 WCAG 2.x AAA, 19 Beste praktijk, 20 Onbepaald. Geordend op ernst, impact op belangrijke pagina's, WCAG-niveau en prevalentie. Volgens de best practices voor het rapporteren van toegankelijkheidsbugs. Downloaden: Markdown · JSON (volledig archief) · JSON (AI-diagnose) · CSV (alle bevindingen) · CSV met prioriteitspagina's · JSON met prioriteitspagina's.

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; 28 more lower-priority finding(s) are summarised at the end of the page, and every finding is in the CSV/JSON downloads.

5 bevinding(en) gemarkeerd als "mogelijk duplicaat" — Alfa en axe-core markeerden beide hetzelfde WCAG-succescriterium op overlappende pagina's. Als ze hetzelfde element betreffen, is het axe-core-rapport doorslaggevend. Filter de CSV op possible_duplicate_of om deze te zien. Dat twee engines dezelfde barrière markeren, verkleint de kans op een vals positief.

Findings needing review

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

Ernstig axe html-has-lang WCAG 2.0 A <html> element must have a lang attribute (WCAG 3.1.1) 340/1948 pagina's · 340 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-6cc73cb3
Patroon-ID
VS-c126b6a6
Gecombineerde ID
VS-6cc73cb3 (patroon VS-c126b6a6) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
3.1.1 Language of Page (Niveau A, WCAG 2.0)
XPath / selector
html
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<html>

Beschrijving

<html> element must have a lang attribute. Detected by axe-core rule html-has-lang on 340 of 1948 scanned pages (340 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000450.htm.
  2. Locate the element: html
  3. Confirm the axe-core finding for rule html-has-lang against WCAG 3.1.1 Language of Page.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited cognitive, language, or learning ability — 11.0% van de bevolking

Getroffen pagina's

…en meer — alle 340 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Kritiek axe image-alt WCAG 2.0 A Images must have alternative text (WCAG 1.1.1) 339/1948 pagina's · 3979 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-058fa054
Patroon-ID
VS-9074b4dd
Gecombineerde ID
VS-058fa054 (patroon VS-9074b4dd) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
1.1.1 Non-text Content (Niveau A, WCAG 2.0)
XPath / selector
td[rowspan="2"][width="10"]:nth-child(1) > img[alt=" "][width="10"][src$="spacer.gif"]
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

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

Beschrijving

Images must have alternative text. Detected by axe-core rule image-alt on 339 of 1948 scanned pages (3979 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000450.htm.
  2. Locate the element: td[rowspan="2"][width="10"]:nth-child(1) > img[alt=" "][width="10"][src$="spacer.gif"]
  3. Confirm the axe-core finding for rule image-alt against WCAG 1.1.1 Non-text Content.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited cognitive, language, or learning ability — 11.0% van de bevolking

Getroffen pagina's

…en meer — alle 339 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Ernstig axe color-contrast WCAG 2.0 AA Elements must meet minimum color contrast ratio thresholds (WCAG 1.4.3) 309/1948 pagina's · 474 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-a1249b15
Patroon-ID
VS-be8d563e
Gecombineerde ID
VS-a1249b15 (patroon VS-be8d563e) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 AA
Obligation
required
Handling
review
WCAG-succescriterium
1.4.3 Contrast (Minimum) (Niveau AA, WCAG 2.0)
XPath / selector
a[name="content_area"] > font[color="red"]
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<font color="red">Persons using assistive technology might not be able to fully access information in this file. For assistance, please send e-mail to: </font>

Beschrijving

Elements must meet minimum color contrast ratio thresholds. Detected by axe-core rule color-contrast on 309 of 1948 scanned pages (474 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000450.htm.
  2. Locate the element: a[name="content_area"] > font[color="red"]
  3. Confirm the axe-core finding for rule color-contrast against WCAG 1.4.3 Contrast (Minimum).

Impact

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

  • Limited vision — 2.4% van de bevolking
  • Without color perception — 4.5% van de bevolking

Getroffen pagina's

…en meer — alle 309 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Ernstig axe link-name WCAG 2.0 A Links must have discernible text (WCAG 2.4.4) 141/1948 pagina's · 444 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-3a4a5aa1
Patroon-ID
VS-e9fe47ac
Gecombineerde ID
VS-3a4a5aa1 (patroon VS-e9fe47ac) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
2.4.4 Link Purpose (In Context) (Niveau A, WCAG 2.0)
XPath / selector
table[cellpadding="0"][cellspacing="0"]:nth-child(2) > tbody > tr > td[width="140"] > a[href$="cdc.gov/"]
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<a href="http://www.cdc.gov/"><img src="http://www.cdc.gov/navimages/nav21.gif" border="0" alt=" " width="140" height="8"></a>

Beschrijving

Links must have discernible text. Detected by axe-core rule link-name on 141 of 1948 scanned pages (444 instances).

Stappen om te reproduceren

  1. Open http://www.cdc.gov/pcd/issues/2007/apr/06_0073a.htm.
  2. Locate the element: table[cellpadding="0"][cellspacing="0"]:nth-child(2) > tbody > tr > td[width="140"] > a[href$="cdc.gov/"]
  3. Confirm the axe-core finding for rule link-name against WCAG 2.4.4 Link Purpose (In Context).

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited cognitive, language, or learning ability — 11.0% van de bevolking

Getroffen pagina's

…en meer — alle 141 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Kritiek axe label WCAG 2.0 A Form elements must have labels (WCAG 4.1.2) 81/1948 pagina's · 93 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-e23d8599
Patroon-ID
VS-fafffee0
Gecombineerde ID
VS-e23d8599 (patroon VS-fafffee0) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
4.1.2 Name, Role, Value (Niveau A, WCAG 2.0)
XPath / selector
#searchBox
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

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

Beschrijving

Form elements must have labels. Detected by axe-core rule label on 81 of 1948 scanned pages (93 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6118a8.htm?s_cid=mm6118a8_w.
  2. Locate the element: #searchBox
  3. Confirm the axe-core finding for rule label against WCAG 4.1.2 Name, Role, Value.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited manipulation/strength — 13.0% van de bevolking

Getroffen pagina's

…en meer — alle 81 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Ernstig axe link-in-text-block WCAG 2.0 A Links must be distinguishable without relying on color (WCAG 1.4.1) 43/1948 pagina's · 43 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-4bf1f38e
Patroon-ID
VS-8ade3360
Gecombineerde ID
VS-4bf1f38e (patroon VS-8ade3360) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
1.4.1 Use of Color (Niveau A, WCAG 2.0)
XPath / selector
.all-pages
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

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

Beschrijving

Links must be distinguishable without relying on color. Detected by axe-core rule link-in-text-block on 43 of 1948 scanned pages (43 instances).

Stappen om te reproduceren

  1. Open http://www.cdc.gov/healthcare-associated-infections/php/preventing-mdros/mdro-prevention-strategies.html.
  2. Locate the element: .all-pages
  3. Confirm the axe-core finding for rule link-in-text-block against WCAG 1.4.1 Use of Color.

Impact

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

  • Without color perception — 4.5% van de bevolking
  • Limited vision — 2.4% van de bevolking

Getroffen pagina's

…en meer — alle 43 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

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

Ernstig axe frame-title WCAG 2.0 A Frames must have an accessible name (WCAG 4.1.2) 28/1948 pagina's · 57 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-0328a753
Patroon-ID
VS-3f76c7ea
Gecombineerde ID
VS-0328a753 (patroon VS-3f76c7ea) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
4.1.2 Name, Role, Value (Niveau A, WCAG 2.0)
XPath / selector
div[data-yt-id="ZBcP08zEXLA"] > iframe[allowfullscreen="allowfullscreen"][title=""]
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<iframe src="//www.youtube-nocookie.com/embed/ZBcP08zEXLA?autohide=0&enablejsapi=1&modestbranding=1&rel=0&origin=https://www.cdc.gov?autohide=0&enablejsapi=1&modestbranding=1&rel=0&origin=https://www.

Beschrijving

Frames must have an accessible name. Detected by axe-core rule frame-title on 28 of 1948 scanned pages (57 instances).

Stappen om te reproduceren

  1. Open http://www.cdc.gov/heads-up/guidelines/returning-to-school.html.
  2. Locate the element: div[data-yt-id="ZBcP08zEXLA"] > iframe[allowfullscreen="allowfullscreen"][title=""]
  3. Confirm the axe-core finding for rule frame-title against WCAG 4.1.2 Name, Role, Value.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited manipulation/strength — 13.0% van de bevolking

Getroffen pagina's

…en meer — alle 28 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Give every <iframe> a descriptive title attribute.

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

Ernstig axe scrollable-region-focusable WCAG 2.0 A Scrollable region must have keyboard access (WCAG 2.1.1) 19/1948 pagina's · 39 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-9497a55e
Patroon-ID
VS-c613c153
Gecombineerde ID
VS-9497a55e (patroon VS-c613c153) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
2.1.1 Keyboard (Niveau A, WCAG 2.0)
XPath / selector
div[data-section="cdc_generic_section_10"] > .dfe-block--cdcmodule.cdc_page_element.dfe-block--width-standard > .dfe-block__inner > .cdc-textblock > .table-responsive > div
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

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

Beschrijving

Scrollable region must have keyboard access. Detected by axe-core rule scrollable-region-focusable on 19 of 1948 scanned pages (39 instances).

Stappen om te reproduceren

  1. Open http://www.cdc.gov/healthcare-associated-infections/php/preventing-mdros/mdro-prevention-strategies.html.
  2. Locate the element: div[data-section="cdc_generic_section_10"] > .dfe-block--cdcmodule.cdc_page_element.dfe-block--width-standard > .dfe-block__inner > .cdc-textblock > .table-responsive > div
  3. Confirm the axe-core finding for rule scrollable-region-focusable against WCAG 2.1.1 Keyboard.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited manipulation/strength — 13.0% van de bevolking
  • Limited reach — 2.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Ernstig 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) 11/1948 pagina's · 13 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-78e39994
Patroon-ID
VS-07ba3b17
Gecombineerde ID
VS-78e39994 (patroon VS-07ba3b17) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
1.3.1 Info and Relationships (Niveau A, WCAG 2.0)
XPath / selector
table
Geschiedenis
voor het eerst gezien 2026-W25, laatst gezien 2026-W40 (16 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<table class="prevaltb" border="1" summary="Table 2a: BRFSS Asthma Call-back Survey 2015-2017">

Beschrijving

Table cell headers attributes must refer to other <th> elements in the same tabl. Detected by axe-core rule td-headers-attr on 11 of 1948 scanned pages (13 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/brfss/acbs/2017/multiple_year/acbs_prevalence_15-17_table2a.html.
  2. Locate the element: table
  3. Confirm the axe-core finding for rule td-headers-attr against WCAG 1.3.1 Info and Relationships.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited cognitive, language, or learning ability — 11.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Ernstig axe aria-command-name WCAG 2.0 A ARIA commands must have an accessible name (WCAG 4.1.2) 10/1948 pagina's · 208 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-d92a475f
Patroon-ID
VS-5c82bd60
Gecombineerde ID
VS-d92a475f (patroon VS-5c82bd60) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
4.1.2 Name, Role, Value (Niveau A, WCAG 2.0)
XPath / selector
th[aria-labelledby=":r3:-heading-0"] > .sort-icon[role="button"]
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<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

Beschrijving

ARIA commands must have an accessible name. Detected by axe-core rule aria-command-name on 10 of 1948 scanned pages (208 instances).

Stappen om te reproduceren

  1. Open http://www.cdc.gov/hepatitis-surveillance-2023/hepatitis-c/figure-3-8.html.
  2. Locate the element: th[aria-labelledby=":r3:-heading-0"] > .sort-icon[role="button"]
  3. Confirm the axe-core finding for rule aria-command-name against WCAG 4.1.2 Name, Role, Value.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited manipulation/strength — 13.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Ernstig axe nested-interactive WCAG 2.0 A Interactive controls must not be nested (WCAG 4.1.2) 9/1948 pagina's · 34 gevallen
Bug-ID
VS-1a005c61
Patroon-ID
VS-58301a87
Gecombineerde ID
VS-1a005c61 (patroon VS-58301a87) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
4.1.2 Name, Role, Value (Niveau A, WCAG 2.0)
XPath / selector
#accordion-1-collapse-1
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<div aria-labelledby="accordion-1-card-1" class="collapse d-print-block show " id="accordion-1-collapse-1" role="tab">

Beschrijving

Interactive controls must not be nested. Detected by axe-core rule nested-interactive on 9 of 1948 scanned pages (34 instances).

Stappen om te reproduceren

  1. Open http://www.cdc.gov/nchs/products/vsrr.htm.
  2. Locate the element: #accordion-1-collapse-1
  3. Confirm the axe-core finding for rule nested-interactive against WCAG 4.1.2 Name, Role, Value.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited manipulation/strength — 13.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Kritiek axe select-name WCAG 2.0 A Select element must have an accessible name (WCAG 4.1.2) 7/1948 pagina's · 17 gevallen
Bug-ID
VS-6ca8bdf4
Patroon-ID
VS-fab92378
Gecombineerde ID
VS-6ca8bdf4 (patroon VS-fab92378) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
4.1.2 Name, Role, Value (Niveau A, WCAG 2.0)
XPath / selector
select
Geschiedenis
voor het eerst gezien 2026-W25, laatst gezien 2026-W40 (16 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

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

</select>

Beschrijving

Select element must have an accessible name. Detected by axe-core rule select-name on 7 of 1948 scanned pages (17 instances).

Stappen om te reproduceren

  1. Open http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6325a4.htm?s_cid=mm6325a4_w.
  2. Locate the element: select
  3. Confirm the axe-core finding for rule select-name against WCAG 4.1.2 Name, Role, Value.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited manipulation/strength — 13.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Ernstig axe list WCAG 2.0 A <ul> and <ol> must only directly contain <li>, <script> or <template> elements (WCAG 1.3.1) 6/1948 pagina's · 6 gevallen
Bug-ID
VS-03304dc6
Patroon-ID
VS-a0bdbdf6
Gecombineerde ID
VS-03304dc6 (patroon VS-a0bdbdf6) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
1.3.1 Info and Relationships (Niveau A, WCAG 2.0)
XPath / selector
ol[type="1"]
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<ol type="1">

Beschrijving

<ul> and <ol> must only directly contain <li>, <script> or <template> elements. Detected by axe-core rule list on 6 of 1948 scanned pages (6 instances).

Stappen om te reproduceren

  1. Open http://www.cdc.gov/mmwr/preview/mmwrhtml/00038946.htm.
  2. Locate the element: ol[type="1"]
  3. Confirm the axe-core finding for rule list against WCAG 1.3.1 Info and Relationships.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited cognitive, language, or learning ability — 11.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Ernstig axe aria-prohibited-attr WCAG 2.0 A Elements must only use permitted ARIA attributes (WCAG 4.1.2) 6/1948 pagina's · 6 gevallen
Bug-ID
VS-72f380af
Patroon-ID
VS-ebb1c464
Gecombineerde ID
VS-72f380af (patroon VS-ebb1c464) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
4.1.2 Name, Role, Value (Niveau A, WCAG 2.0)
XPath / selector
#UNIQUE68967b4f71ad16a3
Geschiedenis
voor het eerst gezien 2026-W28, laatst gezien 2026-W40 (11 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<div class="cdc-card-slider cdc-video-slider slick-initialized slick-slider cdc-carousel-slider" id="UNIQUE68967b4f71ad16a3" aria-label="Carousel">

Beschrijving

Elements must only use permitted ARIA attributes. Detected by axe-core rule aria-prohibited-attr on 6 of 1948 scanned pages (6 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/stophivtogether/hiv-stigma/index.html?s_cid=so_togetherconsumertk0339.
  2. Locate the element: #UNIQUE68967b4f71ad16a3
  3. Confirm the axe-core finding for rule aria-prohibited-attr against WCAG 4.1.2 Name, Role, Value.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited manipulation/strength — 13.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

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

Ernstig axe listitem WCAG 2.0 A <li> elements must be contained in a <ul> or <ol> (WCAG 1.3.1) 4/1948 pagina's · 36 gevallen
Bug-ID
VS-b0eaface
Patroon-ID
VS-6175596b
Gecombineerde ID
VS-b0eaface (patroon VS-6175596b) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
1.3.1 Info and Relationships (Niveau A, WCAG 2.0)
XPath / selector
.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
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<li>4 or more specimens</li>

Beschrijving

<li> elements must be contained in a <ul> or <ol>. Detected by axe-core rule listitem on 4 of 1948 scanned pages (36 instances).

Stappen om te reproduceren

  1. Open http://www.cdc.gov/zika/hcp/diagnosis-testing/placental-and-fetal-tissue-specimens.html.
  2. Locate the element: .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
  3. Confirm the axe-core finding for rule listitem against WCAG 1.3.1 Info and Relationships.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited cognitive, language, or learning ability — 11.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: <li> must be inside a <ul> or <ol>.

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

Ernstig axe blink WCAG 2.0 A <blink> elements are deprecated and must not be used (WCAG 2.2.2) 4/1948 pagina's · 5 gevallen
Bug-ID
VS-559475ad
Patroon-ID
VS-4b45acfe
Gecombineerde ID
VS-559475ad (patroon VS-4b45acfe) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
2.2.2 Pause, Stop, Hide (Niveau A, WCAG 2.0)
XPath / selector
blink
Geschiedenis
voor het eerst gezien 2026-W25, laatst gezien 2026-W40 (16 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

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

Beschrijving

<blink> elements are deprecated and must not be used. Detected by axe-core rule blink on 4 of 1948 scanned pages (5 instances).

Stappen om te reproduceren

  1. Open http://www.cdc.gov/mmwr/preview/mmwrhtml/rr5202a2.htm.
  2. Locate the element: blink
  3. Confirm the axe-core finding for rule blink against WCAG 2.2.2 Pause, Stop, Hide.

Impact

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

  • Limited vision — 2.4% van de bevolking
  • Limited cognitive, language, or learning ability — 11.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

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

Kritiek axe aria-required-children WCAG 2.0 A Certain ARIA roles must contain particular children (WCAG 1.3.1) 1/1948 pagina's · 2 gevallen Waarschijnlijk inhoud
Bug-ID
VS-c2f630a4
Patroon-ID
VS-9429bb8d
Gecombineerde ID
VS-c2f630a4 (patroon VS-9429bb8d) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
1.3.1 Info and Relationships (Niveau A, WCAG 2.0)
XPath / selector
#accordion-7
Geschiedenis
voor het eerst gezien 2026-W25, laatst gezien 2026-W40 (14 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

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

Beschrijving

Certain ARIA roles must contain particular children. Detected by axe-core rule aria-required-children on 1 of 1948 scanned pages (2 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/stophivtogether/hiv-testing/self-testing.html?s_cid=so_togetherconsumertk0294.
  2. Locate the element: #accordion-7
  3. Confirm the axe-core finding for rule aria-required-children against WCAG 1.3.1 Info and Relationships.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited cognitive, language, or learning ability — 11.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Kritiek axe button-name WCAG 2.0 A Buttons must have discernible text (WCAG 4.1.2) 1/1948 pagina's · 1 gevallen Waarschijnlijk inhoud
Bug-ID
VS-7317f571
Patroon-ID
VS-e7298c00
Gecombineerde ID
VS-7317f571 (patroon VS-e7298c00) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
4.1.2 Name, Role, Value (Niveau A, WCAG 2.0)
XPath / selector
#search__icon
Geschiedenis
voor het eerst gezien 2026-W26, laatst gezien 2026-W40 (12 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

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

Beschrijving

Buttons must have discernible text. Detected by axe-core rule button-name on 1 of 1948 scanned pages (1 instances).

Stappen om te reproduceren

  1. Open http://www.cdc.gov/hiv/treatment/index.html.
  2. Locate the element: #search__icon
  3. Confirm the axe-core finding for rule button-name against WCAG 4.1.2 Name, Role, Value.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited manipulation/strength — 13.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Give the button an accessible name via its text content, aria-label, or aria-labelledby.

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

Ernstig axe document-title WCAG 2.0 A Documents must have <title> element to aid in navigation (WCAG 2.4.2) 1/1948 pagina's · 1 gevallen Waarschijnlijk inhoud
Bug-ID
VS-9134986c
Patroon-ID
VS-c80d5faa
Gecombineerde ID
VS-9134986c (patroon VS-c80d5faa) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
2.4.2 Page Titled (Niveau A, WCAG 2.0)
XPath / selector
html
Geschiedenis
voor het eerst gezien 2026-W25, laatst gezien 2026-W40 (10 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<html>

Beschrijving

Documents must have <title> element to aid in navigation. Detected by axe-core rule document-title on 1 of 1948 scanned pages (1 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/nchs/pressroom/stat/index.html.
  2. Locate the element: html
  3. Confirm the axe-core finding for rule document-title against WCAG 2.4.2 Page Titled.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited cognitive, language, or learning ability — 11.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Give the page a unique, descriptive <title>.

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

Ernstig axe region Beste praktijk All page content should be contained by landmarks (WCAG criterion undetermined) 1692/1948 pagina's · 12172 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-ab1cac91
Patroon-ID
VS-f18df681
Gecombineerde ID
VS-ab1cac91 (patroon VS-f18df681) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Beste praktijk
Obligation
advisory
Handling
review
WCAG-succescriterium
Best practice — geen WCAG-vereiste
XPath / selector
.cdc-site-gov-notice
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

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

Beschrijving

All page content should be contained by landmarks. Detected by axe-core rule region on 1692 of 1948 scanned pages (12172 instances).

Stappen om te reproduceren

  1. Open http://www.cdc.gov/niosh/bulletin/2017/miners-cardio.html.
  2. Locate the element: .cdc-site-gov-notice
  3. Confirm the axe-core finding for rule region.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 1692 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Ernstig axe label-title-only Beste praktijk Form elements should have a visible label (WCAG criterion undetermined) 95/1948 pagina's · 95 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-71d45604
Patroon-ID
VS-33841929
Gecombineerde ID
VS-71d45604 (patroon VS-33841929) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Beste praktijk
Obligation
advisory
Handling
review
WCAG-succescriterium
Best practice — geen WCAG-vereiste
XPath / selector
.smallfield
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<input class="smallfield" type="text" name="email" size="15" title="插入电子邮件" value="插入电子邮件" onfocus="this.value=''">

Beschrijving

Form elements should have a visible label. Detected by axe-core rule label-title-only on 95 of 1948 scanned pages (95 instances).

Stappen om te reproduceren

  1. Open http://www.cdc.gov/pcd/issues/2006/oct/05_0243_zhs.htm.
  2. Locate the element: .smallfield
  3. Confirm the axe-core finding for rule label-title-only.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 95 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

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

Ernstig axe tabindex Beste praktijk Elements should not have tabindex greater than zero (WCAG criterion undetermined) 93/1948 pagina's · 279 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-22c3bb98
Patroon-ID
VS-7430f84c
Gecombineerde ID
VS-22c3bb98 (patroon VS-7430f84c) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Beste praktijk
Obligation
advisory
Handling
review
WCAG-succescriterium
Best practice — geen WCAG-vereiste
XPath / selector
a[href$="#content"]
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (9 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<a class="skippy visually-hidden-focusable" href="#content" tabindex="1">Skip to site content</a>

Beschrijving

Elements should not have tabindex greater than zero. Detected by axe-core rule tabindex on 93 of 1948 scanned pages (279 instances).

Stappen om te reproduceren

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

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 93 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Matig alfa sia-r113 WCAG 2.2 AA Target size is at least 24×24 CSS pixels or has spacing (Minimum) (WCAG 2.5.8) 155/1948 pagina's · 1476 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-92cb73c0
Patroon-ID
VS-179ad9b3
Gecombineerde ID
VS-92cb73c0 (patroon VS-179ad9b3) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.2 AA
Obligation
required
Handling
review
WCAG-succescriterium
2.5.8 Target Size (Minimum) (Niveau AA, WCAG 2.2)
XPath / selector
<a href="#Abstract">
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

Target size is at least 24×24 CSS pixels or has spacing (Minimum). Detected by Siteimprove Alfa rule sia-r113 on 155 of 1948 scanned pages (1476 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/pcd/issues/2013/12_0096.htm.
  2. Locate the element: <a href="#Abstract">
  3. Confirm the Siteimprove Alfa finding for rule sia-r113 against WCAG 2.5.8 Target Size (Minimum).

Impact

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

  • Limited manipulation/strength — 13.0% van de bevolking
  • Limited reach — 2.0% van de bevolking
  • Limited vision — 2.4% van de bevolking

Getroffen pagina's

…en meer — alle 155 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

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

Matig alfa sia-r69 WCAG 2.0 AA Text has sufficient color contrast (Enhanced) (WCAG 1.4.3) 154/1948 pagina's · 837 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-36c43a15
Patroon-ID
VS-f7e99f4b
Gecombineerde ID
VS-36c43a15 (patroon VS-f7e99f4b) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 AA
Obligation
required
Handling
review
WCAG-succescriterium
1.4.3 Contrast (Minimum) (Niveau AA, WCAG 2.0)
XPath / selector
text: " Health Topics "
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

Text has sufficient color contrast (Enhanced). Detected by Siteimprove Alfa rule sia-r69 on 154 of 1948 scanned pages (837 instances).

Stappen om te reproduceren

  1. 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/cryptococcosis.
  2. Locate the element: text: " Health Topics "
  3. Confirm the Siteimprove Alfa finding for rule sia-r69 against WCAG 1.4.3 Contrast (Minimum).

Impact

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

  • Limited vision — 2.4% van de bevolking
  • Without color perception — 4.5% van de bevolking

Getroffen pagina's

…en meer — alle 154 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Matig alfa sia-r4 WCAG 2.0 A Document has a valid lang attribute (WCAG 3.1.1) 85/1948 pagina's · 85 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-dbcc318d
Patroon-ID
VS-7a0e5645
Gecombineerde ID
VS-dbcc318d (patroon VS-7a0e5645) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
3.1.1 Language of Page (Niveau A, WCAG 2.0)
XPath / selector
<html>
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

Document has a valid lang attribute. Detected by Siteimprove Alfa rule sia-r4 on 85 of 1948 scanned pages (85 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5050a3.htm.
  2. Locate the element: <html>
  3. Confirm the Siteimprove Alfa finding for rule sia-r4 against WCAG 3.1.1 Language of Page.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited cognitive, language, or learning ability — 11.0% van de bevolking

Getroffen pagina's

…en meer — alle 85 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Add a valid lang attribute to <html>.

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

Matig alfa sia-r2 WCAG 2.0 A Image has accessible name (WCAG 1.1.1) 84/1948 pagina's · 891 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-fdd075cd
Patroon-ID
VS-a24eaa8c
Gecombineerde ID
VS-fdd075cd (patroon VS-a24eaa8c) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
1.1.1 Non-text Content (Niveau A, WCAG 2.0)
XPath / selector
<img src="../../images/spacer.gif" width="10" height="1" alt=" ">
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

Image has accessible name. Detected by Siteimprove Alfa rule sia-r2 on 84 of 1948 scanned pages (891 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5050a3.htm.
  2. Locate the element: <img src="../../images/spacer.gif" width="10" height="1" alt=" ">
  3. Confirm the Siteimprove Alfa finding for rule sia-r2 against WCAG 1.1.1 Non-text Content.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited cognitive, language, or learning ability — 11.0% van de bevolking

Getroffen pagina's

…en meer — alle 84 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Give every <img> an accessible name (alt text), or alt="" if purely decorative.

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

Matig alfa sia-r68 WCAG 2.0 A Presentational children of an element are not focusable (WCAG 1.3.1) 45/1948 pagina's · 460 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-a765dd5d
Patroon-ID
VS-d6097011
Gecombineerde ID
VS-a765dd5d (patroon VS-d6097011) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
1.3.1 Info and Relationships (Niveau A, WCAG 2.0)
XPath / selector
<ul class="forWide">
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

Presentational children of an element are not focusable. Detected by Siteimprove Alfa rule sia-r68 on 45 of 1948 scanned pages (460 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/pcd/issues/2013/12_0096.htm.
  2. Locate the element: <ul class="forWide">
  3. Confirm the Siteimprove Alfa finding for rule sia-r68 against WCAG 1.3.1 Info and Relationships.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited cognitive, language, or learning ability — 11.0% van de bevolking

Getroffen pagina's

…en meer — alle 45 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

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

Matig alfa sia-r14 WCAG 2.1 A Accessible name of link or button matches visible label (WCAG 2.5.3) 43/1948 pagina's · 90 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-940e6969
Patroon-ID
VS-f7dba940
Gecombineerde ID
VS-940e6969 (patroon VS-f7dba940) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.1 A
Obligation
required
Handling
review
WCAG-succescriterium
2.5.3 Label in Name (Niveau A, WCAG 2.1)
XPath / selector
<a data-action="print" href="#print" class="d-none d-md-block" aria-label="print this page">
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

Accessible name of link or button matches visible label. Detected by Siteimprove Alfa rule sia-r14 on 43 of 1948 scanned pages (90 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/niosh/publications/es/numbered/2006-110sp.html.
  2. Locate the element: <a data-action="print" href="#print" class="d-none d-md-block" aria-label="print this page">
  3. Confirm the Siteimprove Alfa finding for rule sia-r14 against WCAG 2.5.3 Label in Name.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Without speech — 0.5% van de bevolking

Getroffen pagina's

…en meer — alle 43 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

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

Matig alfa sia-r11 WCAG 2.0 A Link has accessible name (WCAG 2.4.4) 33/1948 pagina's · 85 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-e274efa9
Patroon-ID
VS-28ebd979
Gecombineerde ID
VS-e274efa9 (patroon VS-28ebd979) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
2.4.4 Link Purpose (In Context) (Niveau A, WCAG 2.0)
XPath / selector
<a href="/niosh/media/pdfs/2026/05/2006-110.pdf" target="_blank" rel="noopener noreferrer" class="no-decoration">
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

Link has accessible name. Detected by Siteimprove Alfa rule sia-r11 on 33 of 1948 scanned pages (85 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/niosh/publications/es/numbered/2006-110sp.html.
  2. Locate the element: <a href="/niosh/media/pdfs/2026/05/2006-110.pdf" target="_blank" rel="noopener noreferrer" class="no-decoration">
  3. Confirm the Siteimprove Alfa finding for rule sia-r11 against WCAG 2.4.4 Link Purpose (In Context).

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited cognitive, language, or learning ability — 11.0% van de bevolking

Getroffen pagina's

…en meer — alle 33 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Give the link an accessible name via text content or aria-label.

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

Matig alfa sia-r8 WCAG 2.0 A Form field has accessible name (WCAG 4.1.2) 23/1948 pagina's · 24 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-63d67050
Patroon-ID
VS-a48e6078
Gecombineerde ID
VS-63d67050 (patroon VS-a48e6078) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.0 A
Obligation
required
Handling
review
WCAG-succescriterium
4.1.2 Name, Role, Value (Niveau A, WCAG 2.0)
XPath / selector
<input id="searchBox" class="searchBox" name="query" maxlength="256">
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

Form field has accessible name. Detected by Siteimprove Alfa rule sia-r8 on 23 of 1948 scanned pages (24 instances).

Stappen om te reproduceren

  1. Open http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6150a2.htm?s_cid=mm6150a2_w.
  2. Locate the element: <input id="searchBox" class="searchBox" name="query" maxlength="256">
  3. Confirm the Siteimprove Alfa finding for rule sia-r8 against WCAG 4.1.2 Name, Role, Value.

Impact

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

  • Without vision — 1.0% van de bevolking
  • Limited vision — 2.4% van de bevolking
  • Limited manipulation/strength — 13.0% van de bevolking

Getroffen pagina's

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Associate the form field with a label.

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

Matig axe landmark-unique Beste praktijk Landmarks should have a unique role or role/label/title (i.e. accessible name) c (WCAG criterion undetermined) 584/1948 pagina's · 778 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-ce104c6a
Patroon-ID
VS-8806389c
Gecombineerde ID
VS-ce104c6a (patroon VS-8806389c) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Beste praktijk
Obligation
advisory
Handling
review
WCAG-succescriterium
Best practice — geen WCAG-vereiste
XPath / selector
.page-right-rail__static
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

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

Beschrijving

Landmarks should have a unique role or role/label/title (i.e. accessible name) c. Detected by axe-core rule landmark-unique on 584 of 1948 scanned pages (778 instances).

Stappen om te reproduceren

  1. Open http://www.cdc.gov/niosh/bulletin/2017/miners-cardio.html.
  2. Locate the element: .page-right-rail__static
  3. Confirm the axe-core finding for rule landmark-unique.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 584 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Matig axe heading-order Beste praktijk Heading levels should only increase by one (WCAG criterion undetermined) 512/1948 pagina's · 688 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-b1f93f77
Patroon-ID
VS-d25f622d
Gecombineerde ID
VS-b1f93f77 (patroon VS-d25f622d) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Beste praktijk
Obligation
advisory
Handling
review
WCAG-succescriterium
Best practice — geen WCAG-vereiste
XPath / selector
h3:nth-child(10)
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<h3>Editorial Note</h3>

Beschrijving

Heading levels should only increase by one. Detected by axe-core rule heading-order on 512 of 1948 scanned pages (688 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000450.htm.
  2. Locate the element: h3:nth-child(10)
  3. Confirm the axe-core finding for rule heading-order.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 512 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Matig axe landmark-one-main Beste praktijk Document should have one main landmark (WCAG criterion undetermined) 440/1948 pagina's · 440 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-49b5acde
Patroon-ID
VS-d5d82446
Gecombineerde ID
VS-49b5acde (patroon VS-d5d82446) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Beste praktijk
Obligation
advisory
Handling
review
WCAG-succescriterium
Best practice — geen WCAG-vereiste
XPath / selector
html
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<html>

Beschrijving

Document should have one main landmark. Detected by axe-core rule landmark-one-main on 440 of 1948 scanned pages (440 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000450.htm.
  2. Locate the element: html
  3. Confirm the axe-core finding for rule landmark-one-main.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 440 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Each page should have exactly one <main> landmark.

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

Matig alfa sia-r111 WCAG 2.x AAA Target size is at least 44×44 CSS pixels (Enhanced) (WCAG 2.5.5) 416/1948 pagina's · 12037 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-e6b7f71f
Patroon-ID
VS-cb53cc4d
Gecombineerde ID
VS-e6b7f71f (patroon VS-cb53cc4d) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.x AAA
Obligation
aspirational
Handling
review
WCAG-succescriterium
2.5.5 Target Size (Enhanced) (Niveau AAA, WCAG 2.1)
XPath / selector
<a class="cdc-header__title-super" href="/niosh/index.html">
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

Target size is at least 44×44 CSS pixels (Enhanced). Detected by Siteimprove Alfa rule sia-r111 on 416 of 1948 scanned pages (12037 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/niosh/publications/es/numbered/2006-110sp.html.
  2. Locate the element: <a class="cdc-header__title-super" href="/niosh/index.html">
  3. Confirm the Siteimprove Alfa finding for rule sia-r111 against WCAG 2.5.5 Target Size (Enhanced).

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 416 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

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

Matig alfa sia-r66 WCAG 2.x AAA Text has enhanced contrast (WCAG 1.4.6) 355/1948 pagina's · 10203 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-af32558f
Patroon-ID
VS-646b1e0b
Gecombineerde ID
VS-af32558f (patroon VS-646b1e0b) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.x AAA
Obligation
aspirational
Handling
review
WCAG-succescriterium
1.4.6 Contrast (Enhanced) (Niveau AAA, WCAG 2.0)
XPath / selector
text: " Así es como usted puede verificarlo "
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

Text has enhanced contrast. Detected by Siteimprove Alfa rule sia-r66 on 355 of 1948 scanned pages (10203 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/niosh/publications/es/numbered/2006-110sp.html.
  2. Locate the element: text: " Así es como usted puede verificarlo "
  3. Confirm the Siteimprove Alfa finding for rule sia-r66 against WCAG 1.4.6 Contrast (Enhanced).

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 355 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Increase text contrast to meet WCAG AAA (7:1).

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

Matig alfa sia-r57 Onbepaald Scrolling content can be accessed by keyboard (WCAG criterion undetermined) 307/1948 pagina's · 4119 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-5879d4e8
Patroon-ID
VS-c18be945
Gecombineerde ID
VS-5879d4e8 (patroon VS-c18be945) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Onbepaald
Obligation
unmapped
Handling
review
WCAG-succescriterium
onbepaald
XPath / selector
text: "Ir a la búsqueda"
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

Scrolling content can be accessed by keyboard. Detected by Siteimprove Alfa rule sia-r57 on 307 of 1948 scanned pages (4119 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/niosh/publications/es/numbered/2006-110sp.html.
  2. Locate the element: text: "Ir a la búsqueda"
  3. Confirm the Siteimprove Alfa finding for rule sia-r57.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 307 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

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

Matig alfa sia-r18 Onbepaald aria attribute is permitted for element role (WCAG criterion undetermined) 222/1948 pagina's · 278 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-90f75c21
Patroon-ID
VS-e05344b9
Gecombineerde ID
VS-90f75c21 (patroon VS-e05344b9) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Onbepaald
Obligation
unmapped
Handling
review
WCAG-succescriterium
onbepaald
XPath / selector
@aria-label="Un sitio oficial del Gobierno de Estados Unidos"
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

aria attribute is permitted for element role. Detected by Siteimprove Alfa rule sia-r18 on 222 of 1948 scanned pages (278 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/niosh/publications/es/numbered/2006-110sp.html.
  2. Locate the element: @aria-label="Un sitio oficial del Gobierno de Estados Unidos"
  3. Confirm the Siteimprove Alfa finding for rule sia-r18.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 222 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Only use ARIA states/properties that are allowed on this element/role.

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

Matig alfa sia-r74 WCAG 2.x AAA Link is distinguishable without relying on color (WCAG 1.4.8) 192/1948 pagina's · 935 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-1fe90707
Patroon-ID
VS-fbf54eba
Gecombineerde ID
VS-1fe90707 (patroon VS-fbf54eba) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.x AAA
Obligation
aspirational
Handling
review
WCAG-succescriterium
1.4.8 Visual Presentation (Niveau AAA, WCAG 2.0)
XPath / selector
<p class="cdc-footer__super-desc">
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

Link is distinguishable without relying on color. Detected by Siteimprove Alfa rule sia-r74 on 192 of 1948 scanned pages (935 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/niosh/publications/es/numbered/2006-110sp.html.
  2. Locate the element: <p class="cdc-footer__super-desc">
  3. Confirm the Siteimprove Alfa finding for rule sia-r74 against WCAG 1.4.8 Visual Presentation.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 192 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

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

Matig axe page-has-heading-one Beste praktijk Page should contain a level-one heading (WCAG criterion undetermined) 152/1948 pagina's · 152 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-8b442a74
Patroon-ID
VS-fa44f293
Gecombineerde ID
VS-8b442a74 (patroon VS-fa44f293) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Beste praktijk
Obligation
advisory
Handling
review
WCAG-succescriterium
Best practice — geen WCAG-vereiste
XPath / selector
html
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<html lang="en-us" class="cdc-theme-cdc cdc-root-home cdc-page-type--2024home">

Beschrijving

Page should contain a level-one heading. Detected by axe-core rule page-has-heading-one on 152 of 1948 scanned pages (152 instances).

Stappen om te reproduceren

  1. 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/index.html.
  2. Locate the element: html
  3. Confirm the axe-core finding for rule page-has-heading-one.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 152 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

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

Matig alfa sia-r53 Onbepaald Headings are structured hierarchically (WCAG criterion undetermined) 136/1948 pagina's · 184 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-9fd5f603
Patroon-ID
VS-f054f4a4
Gecombineerde ID
VS-9fd5f603 (patroon VS-f054f4a4) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Onbepaald
Obligation
unmapped
Handling
review
WCAG-succescriterium
onbepaald
XPath / selector
<h3>
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

Headings are structured hierarchically. Detected by Siteimprove Alfa rule sia-r53 on 136 of 1948 scanned pages (184 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/mmwr/volumes/72/wr/mm7216a1.htm?s_cid=mm7216a1_w.
  2. Locate the element: <h3>
  3. Confirm the Siteimprove Alfa finding for rule sia-r53.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 136 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Use headings in a logical, non-skipping order.

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

Matig alfa sia-r73 WCAG 2.x AAA Text has minimum contrast ratio of 4.5:1 (WCAG 1.4.8) 130/1948 pagina's · 21730 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-71e51e33
Patroon-ID
VS-2208081b
Gecombineerde ID
VS-71e51e33 (patroon VS-2208081b) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
WCAG 2.x AAA
Obligation
aspirational
Handling
review
WCAG-succescriterium
1.4.8 Visual Presentation (Niveau AAA, WCAG 2.0)
XPath / selector
<p>
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

Text has minimum contrast ratio of 4.5:1. Detected by Siteimprove Alfa rule sia-r73 on 130 of 1948 scanned pages (21730 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/pcd/issues/2013/12_0096.htm.
  2. Locate the element: <p>
  3. Confirm the Siteimprove Alfa finding for rule sia-r73 against WCAG 1.4.8 Visual Presentation.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 130 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

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

Matig axe skip-link Beste praktijk The skip-link target should exist and be focusable (WCAG criterion undetermined) 104/1948 pagina's · 105 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-8ad0c097
Patroon-ID
VS-4edfe386
Gecombineerde ID
VS-8ad0c097 (patroon VS-4edfe386) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Beste praktijk
Obligation
advisory
Handling
review
WCAG-succescriterium
Best practice — geen WCAG-vereiste
XPath / selector
a[href$="#headerSearch"]
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<a class="skippy visually-hidden-focusable" href="#headerSearch" tabindex="2">Skip to search</a>

Beschrijving

The skip-link target should exist and be focusable. Detected by axe-core rule skip-link on 104 of 1948 scanned pages (105 instances).

Stappen om te reproduceren

  1. 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/index.html.
  2. Locate the element: a[href$="#headerSearch"]
  3. Confirm the axe-core finding for rule skip-link.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 104 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Ensure the skip link targets a real, focusable element (its href must match an existing id).

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

Matig alfa sia-r70 Onbepaald No obsolete or deprecated elements are used (WCAG criterion undetermined) 102/1948 pagina's · 102 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-42b21cdd
Patroon-ID
VS-3d033717
Gecombineerde ID
VS-42b21cdd (patroon VS-3d033717) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Onbepaald
Obligation
advisory
Handling
review
WCAG-succescriterium
onbepaald
XPath / selector
{"type":"document","children":[{"type":"element","children":[{"type":"element","
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

No obsolete or deprecated elements are used. Detected by Siteimprove Alfa rule sia-r70 on 102 of 1948 scanned pages (102 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5050a3.htm.
  2. Locate the element: {"type":"document","children":[{"type":"element","children":[{"type":"element","
  3. Confirm the Siteimprove Alfa finding for rule sia-r70.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 102 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

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

Matig axe landmark-contentinfo-is-top-level Beste praktijk Contentinfo landmark should not be contained in another landmark (WCAG criterion undetermined) 93/1948 pagina's · 93 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-e2523e60
Patroon-ID
VS-424cced9
Gecombineerde ID
VS-e2523e60 (patroon VS-424cced9) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Beste praktijk
Obligation
advisory
Handling
review
WCAG-succescriterium
Best practice — geen WCAG-vereiste
XPath / selector
.cdc-footer > footer
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (8 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<footer>

Beschrijving

Contentinfo landmark should not be contained in another landmark. Detected by axe-core rule landmark-contentinfo-is-top-level on 93 of 1948 scanned pages (93 instances).

Stappen om te reproduceren

  1. 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/index.html.
  2. Locate the element: .cdc-footer > footer
  3. Confirm the axe-core finding for rule landmark-contentinfo-is-top-level.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 93 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/landmark-contentinfo-is-top-level?application=axeAPI

Matig axe landmark-no-duplicate-banner Beste praktijk Document should not have more than one banner landmark (WCAG criterion undetermined) 93/1948 pagina's · 93 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-fc7bb387
Patroon-ID
VS-054101da
Gecombineerde ID
VS-fc7bb387 (patroon VS-054101da) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Beste praktijk
Obligation
advisory
Handling
review
WCAG-succescriterium
Best practice — geen WCAG-vereiste
XPath / selector
.cdc-header
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (11 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<header class="container cdc-header">

Beschrijving

Document should not have more than one banner landmark. Detected by axe-core rule landmark-no-duplicate-banner on 93 of 1948 scanned pages (93 instances).

Stappen om te reproduceren

  1. 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/index.html.
  2. Locate the element: .cdc-header
  3. Confirm the axe-core finding for rule landmark-no-duplicate-banner.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 93 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Use only one banner landmark (<header> at the top level) per page.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/landmark-no-duplicate-banner?application=axeAPI

Matig axe landmark-no-duplicate-contentinfo Beste praktijk Document should not have more than one contentinfo landmark (WCAG criterion undetermined) 93/1948 pagina's · 93 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-8cd272f2
Patroon-ID
VS-b465dfd7
Gecombineerde ID
VS-8cd272f2 (patroon VS-b465dfd7) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Beste praktijk
Obligation
advisory
Handling
review
WCAG-succescriterium
Best practice — geen WCAG-vereiste
XPath / selector
.cdc-footer
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (8 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<footer class="container cdc-footer noindex" role="contentinfo">

Beschrijving

Document should not have more than one contentinfo landmark. Detected by axe-core rule landmark-no-duplicate-contentinfo on 93 of 1948 scanned pages (93 instances).

Stappen om te reproduceren

  1. 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/index.html.
  2. Locate the element: .cdc-footer
  3. Confirm the axe-core finding for rule landmark-no-duplicate-contentinfo.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 93 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Use only one contentinfo landmark (<footer> at the top level) per page.

See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/landmark-no-duplicate-contentinfo?application=axeAPI

Gering axe aria-allowed-role Beste praktijk ARIA role should be appropriate for the element (WCAG criterion undetermined) 78/1948 pagina's · 92 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-ad4298bf
Patroon-ID
VS-4fac2f41
Gecombineerde ID
VS-ad4298bf (patroon VS-4fac2f41) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Beste praktijk
Obligation
advisory
Handling
review
WCAG-succescriterium
Best practice — geen WCAG-vereiste
XPath / selector
img[alt="2006-110sp"]
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<img src="/niosh/media/images/2026/05/2006-110_sp-cover.jpg" alt="2006-110sp" role="presentation">

Beschrijving

ARIA role should be appropriate for the element. Detected by axe-core rule aria-allowed-role on 78 of 1948 scanned pages (92 instances).

Stappen om te reproduceren

  1. Open https://www.cdc.gov/niosh/publications/es/numbered/2006-110sp.html.
  2. Locate the element: img[alt="2006-110sp"]
  3. Confirm the axe-core finding for rule aria-allowed-role.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 78 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: 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

Matig alfa sia-r61 Onbepaald Form field label is visible (WCAG criterion undetermined) 59/1948 pagina's · 59 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-f26b4bca
Patroon-ID
VS-7118fead
Gecombineerde ID
VS-f26b4bca (patroon VS-7118fead) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Onbepaald
Obligation
unmapped
Handling
review
WCAG-succescriterium
onbepaald
XPath / selector
{"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

Beschrijving

Form field label is visible. Detected by Siteimprove Alfa rule sia-r61 on 59 of 1948 scanned pages (59 instances).

Stappen om te reproduceren

  1. 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/cryptococcosis.
  2. Locate the element: {"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys
  3. Confirm the Siteimprove Alfa finding for rule sia-r61.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 59 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

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

Matig deprecated-html presentational-attr Onbepaald Presentational attribute (use CSS) (WCAG criterion undetermined) 49/1948 pagina's · 5533 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-33602509
Patroon-ID
VS-04a9d28c
Gecombineerde ID
VS-33602509 (patroon VS-04a9d28c) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Onbepaald
Obligation
unmapped
Handling
review
WCAG-succescriterium
onbepaald
Regel
deprecated-html — Presentational attribute (use CSS) [presentational-attr]
XPath / selector
body
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<body bgcolor="#ffffff" leftmargin="0" topmargin="0" marginheight="0" marginwidth="0" background="../../../images/bkgnd.gif" class=" dmat-load-complete">

<!--webbot bot="Include" U-Include="../../../

Beschrijving

Presentational attribute (use CSS). Detected by deprecated-html rule presentational-attr on 49 of 1948 scanned pages (5533 instances).

Stappen om te reproduceren

  1. Open http://www.cdc.gov/pcd/issues/2011/nov/10_0197_es.htm.
  2. Locate the element: body
  3. Confirm the deprecated-html finding for rule presentational-attr.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 49 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Not captured by automated scan — requires manual testing.

Matig deprecated-html font-element Onbepaald Obsolete <font> element (use CSS) (WCAG criterion undetermined) 35/1948 pagina's · 261 gevallen Waarschijnlijk sjabloon
Bug-ID
VS-32f0b684
Patroon-ID
VS-91d2294a
Gecombineerde ID
VS-32f0b684 (patroon VS-91d2294a) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie
Onbepaald
Obligation
unmapped
Handling
review
WCAG-succescriterium
onbepaald
Regel
deprecated-html — Obsolete <font> element (use CSS) [font-element]
XPath / selector
font
Geschiedenis
voor het eerst gezien 2026-W24, laatst gezien 2026-W40 (17 wk)

HTML-fragment — gebruik dit om de bevinding te valideren zonder de tool opnieuw uit te voeren

<font size="-1" color="#808080">Versión en español aprobada por <i>CDC Multilingual Services</i> – Order # 
			226806-C</font>

Beschrijving

Obsolete <font> element (use CSS). Detected by deprecated-html rule font-element on 35 of 1948 scanned pages (261 instances).

Stappen om te reproduceren

  1. Open http://www.cdc.gov/pcd/issues/2011/nov/10_0197_es.htm.
  2. Locate the element: font
  3. Confirm the deprecated-html finding for rule font-element.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

…en meer — alle 35 pagina's (CSV).

Testomgeving

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

Voorgestelde oplossing

Not captured by automated scan — requires manual testing.

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

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

ErnstBevindingWCAG-categoriePagina's
Gering Table header text should not be empty (WCAG criterion undetermined) [empty-table-header] Beste praktijk 34
Matig Scrollable element is keyboard accessible (WCAG 1.4.8) [sia-r80] WCAG 2.x AAA 27
Matig Table header has scope (WCAG criterion undetermined) [sia-r78] Onbepaald 26
Matig Obsolete <big> element (use CSS) (WCAG criterion undetermined) [big-element] Onbepaald 24
Gering Headings should not be empty (WCAG criterion undetermined) [empty-heading] Beste praktijk 22
Matig scope attribute should be used correctly (WCAG criterion undetermined) [scope-attr-valid] Beste praktijk 11
Matig Obsolete <center> element (use CSS) (WCAG criterion undetermined) [center-element] Onbepaald 10
Matig Duplicate role landmark is labeled (WCAG criterion undetermined) [sia-r79] Onbepaald 9
Matig Component with same name serves same purpose (WCAG 4.1.2) [sia-r90] WCAG 2.0 A 6
Matig Button has accessible name (WCAG 4.1.2) [sia-r12] WCAG 2.0 A 4
Matig Element with orientation is not locked (WCAG criterion undetermined) [sia-r59] Onbepaald 4
Matig Element has required aria-owns (WCAG 1.3.1) [sia-r46] WCAG 2.0 A 3
Matig Element has required owned roles (WCAG 1.3.1) [sia-r64] WCAG 2.0 A 3
Matig First focusable element is link to main content (WCAG criterion undetermined) [sia-r87] Onbepaald 3
Matig Input purpose can be determined (WCAG criterion undetermined) [sia-r60] Onbepaald 3
Matig Keyboard trap does not exist (WCAG criterion undetermined) [sia-r85] Onbepaald 3
Matig Tables are used for tabular data, not layout (WCAG criterion undetermined) [sia-r40] Onbepaald 3
Matig Table cell has header (WCAG 1.3.1) [sia-r77] WCAG 2.0 A 2
Matig Focus is not lost after interaction (WCAG criterion undetermined) [sia-r86] Onbepaald 2
Matig Assertive live region is marked as atomic (WCAG criterion undetermined) [sia-r54] Onbepaald 2
Matig aria-hidden element is not exposed to assistive technology (WCAG 1.3.1) [sia-r45] WCAG 2.0 A 1
Matig Link in text block is visually distinguishable without color (WCAG 1.4.1) [sia-r62] WCAG 2.0 A 1
Matig Obsolete <blink> element (WCAG criterion undetermined) [blink-element] Onbepaald 1
Matig Document should not have more than one main landmark (WCAG criterion undetermined) [landmark-no-duplicate-main] Beste praktijk 1
Matig Element role is consistent with ARIA landmark (WCAG criterion undetermined) [sia-r72] Onbepaald 1
Matig Main landmark should not be contained in another landmark (WCAG criterion undetermined) [landmark-main-is-top-level] Beste praktijk 1
Gering Elements marked as presentational should be consistently ignored (WCAG criterion undetermined) [presentation-role-conflict] Beste praktijk 1
Gering Tables should not have the same summary and caption (WCAG criterion undetermined) [table-duplicate-name] Beste praktijk 1

Bevindingen van Deque axe-core

Rule-level axe-core summary (38 rule type(s))

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

axe-core rules failing in 2026-W40, by pages affected
RegelImpactGetroffen pagina'sGevallenVoorbeeldpagina'sAlle getroffen
All page content should be contained by landmarks [region] moderate 1692 12172 /niosh/bulletin/2017/miners-cardio.html
/niosh/bulletin/2020/hearing-loss-construction.html
/mmwr/preview/mmwrhtml/00000450.htm		 alle 1692 pagina's (CSV)
Landmarks should have a unique role or role/label/title (i.e. accessible name) combination [landmark-unique] moderate 584 778 /niosh/bulletin/2017/miners-cardio.html
/niosh/bulletin/2020/hearing-loss-construction.html
/diabetes/es/caring/manejo-de-la-diabetes-en-la-escuela.html		 alle 584 pagina's (CSV)
Heading levels should only increase by one [heading-order] moderate 512 688 /mmwr/preview/mmwrhtml/00000450.htm
/mmwr/preview/mmwrhtml/00056637.htm
/pcd/issues/2006/oct/05_0243_zhs.htm		 alle 512 pagina's (CSV)
Document should have one main landmark [landmark-one-main] moderate 440 440 /mmwr/preview/mmwrhtml/00000450.htm
/mmwr/preview/mmwrhtml/00056637.htm
/pcd/issues/2007/apr/06_0073a.htm		 alle 440 pagina's (CSV)
<html> element must have a lang attribute [html-has-lang] serious 340 340 /mmwr/preview/mmwrhtml/00000450.htm
/mmwr/preview/mmwrhtml/00056637.htm
/pcd/issues/2007/apr/06_0073a.htm		 alle 340 pagina's (CSV)
Images must have alternative text [image-alt] critical 339 3979 /mmwr/preview/mmwrhtml/00000450.htm
/mmwr/preview/mmwrhtml/00056637.htm
/pcd/issues/2007/apr/06_0073a.htm		 alle 339 pagina's (CSV)
Elements must meet minimum color contrast ratio thresholds [color-contrast] serious 309 474 /mmwr/preview/mmwrhtml/00000450.htm
/mmwr/preview/mmwrhtml/00056637.htm
/mmwr/preview/mmwrhtml/mm6118a8.htm		 alle 309 pagina's (CSV)
Page should contain a level-one heading [page-has-heading-one] moderate 152 152 /viral-hemorrhagic-fevers/hcp/diagnosis-testing/index.html
/cryptococcosis
/national-asthma-control-program/site.html		 alle 152 pagina's (CSV)
Links must have discernible text [link-name] serious 141 444 /pcd/issues/2007/apr/06_0073a.htm
/pcd/issues/2006/oct/05_0243_zhs.htm
/pcd/issues/2011/nov/10_0197_es.htm		 alle 141 pagina's (CSV)
The skip-link target should exist and be focusable [skip-link] moderate 104 105 /viral-hemorrhagic-fevers/hcp/diagnosis-testing/index.html
/cryptococcosis
/mumps/hcp/clinical-signs/index.html		 alle 104 pagina's (CSV)
Form elements should have a visible label [label-title-only] serious 95 95 /pcd/issues/2006/oct/05_0243_zhs.htm
/pcd/issues/2011/nov/10_0197_es.htm
/pcd/issues/2009/jan/07_0242_zhs.htm		 alle 95 pagina's (CSV)
Elements should not have tabindex greater than zero [tabindex] serious 93 279 /viral-hemorrhagic-fevers/hcp/diagnosis-testing/index.html
/cryptococcosis
/mumps/hcp/clinical-signs/index.html		 alle 93 pagina's (CSV)
Contentinfo landmark should not be contained in another landmark [landmark-contentinfo-is-top-level] moderate 93 93 /viral-hemorrhagic-fevers/hcp/diagnosis-testing/index.html
/cryptococcosis
/mumps/hcp/clinical-signs/index.html		 alle 93 pagina's (CSV)
Document should not have more than one banner landmark [landmark-no-duplicate-banner] moderate 93 93 /viral-hemorrhagic-fevers/hcp/diagnosis-testing/index.html
/cryptococcosis
/mumps/hcp/clinical-signs/index.html		 alle 93 pagina's (CSV)
Document should not have more than one contentinfo landmark [landmark-no-duplicate-contentinfo] moderate 93 93 /viral-hemorrhagic-fevers/hcp/diagnosis-testing/index.html
/cryptococcosis
/mumps/hcp/clinical-signs/index.html		 alle 93 pagina's (CSV)
Form elements must have labels [label] critical 81 93 /mmwr/preview/mmwrhtml/mm6118a8.htm
/mmwr/preview/mmwrhtml/mm6311a5.htm
/mmwr/preview/mmwrhtml/mm6040a8.htm		 alle 81 pagina's (CSV)
ARIA role should be appropriate for the element [aria-allowed-role] minor 78 92 /niosh/publications/es/numbered/2006-110sp.html
/spanish/NIOSH/docs/2007-133_sp
/niosh/publications/numbered/2014-149.html		 alle 78 pagina's (CSV)
Links must be distinguishable without relying on color [link-in-text-block] serious 43 43 /healthcare-associated-infections/php/preventing-mdros/mdro-prevention-strategies.html
/grants/applying/eligibility.html
/infection-control/hcp/environmental-infection-control-guidelines/executive-summary.html		 alle 43 pagina's (CSV)
Table header text should not be empty [empty-table-header] minor 34 113 /pcd/issues/2007/apr/06_0073a.htm
/pcd/issues/2004/jan/03_0012.htm
/pcd/issues/2006/jan/05_0088.htm		 alle 34 pagina's (CSV)
Frames must have an accessible name [frame-title] serious 28 57 /heads-up/guidelines/returning-to-school.html
/coca/hcp/trainings/ah5n1-virus-clinicians-healthcare-centers.html
/stophivtogether/prepared/index.html		 alle 28 pagina's (CSV)
Headings should not be empty [empty-heading] minor 22 37 /other/plugins/index.html
/mmwr/preview/mmwrhtml/mm5319a2.htm
/mmwr/preview/mmwrhtml/mm5401a2.htm		 alle 22 pagina's (CSV)
Scrollable region must have keyboard access [scrollable-region-focusable] serious 19 39 /healthcare-associated-infections/php/preventing-mdros/mdro-prevention-strategies.html
/hepatitis/statistics/2020surveillance/hepatitis-c/table-3.7.htm
/asthma-data/nhis/2022-standard-errors-current-population-estimates-age.html		 alle 19 pagina's (CSV)
scope attribute should be used correctly [scope-attr-valid] moderate 11 57 /healthcare-associated-infections/php/preventing-mdros/mdro-prevention-strategies.html
/acip/evidence-to-recommendations/influenza-older-adults-etr.html
/brfss/annual_data/2010/summary_matrix_10.htm		 alle 11 pagina's (CSV)
Table cell headers attributes must refer to other <th> elements in the same table [td-headers-attr] serious 11 13 /brfss/acbs/2017/multiple_year/acbs_prevalence_15-17_table2a.html
/brfss/acbs/2012/prevalence_tables/table6.html
/asthma/healthcare-use/2013/table_b.html		 alle 11 pagina's (CSV)
ARIA commands must have an accessible name [aria-command-name] serious 10 208 /hepatitis-surveillance-2023/hepatitis-c/figure-3-8.html
/hepatitis-surveillance-2022/hepatitis-b/figure-2-6.html
/hepatitis/php/npr-2023/hep-c-reduce-infections.html		 alle 10 pagina's (CSV)
Interactive controls must not be nested [nested-interactive] serious 9 34 /nchs/products/vsrr.htm
/tobacco/campaign/tips/spanish/poblaciones/indoamericanos-o-nativos-de-alaska.html
/stophivtogether/hiv-treatment/index.html		 alle 9 pagina's (CSV)
Select element must have an accessible name [select-name] critical 7 17 /mmwr/preview/mmwrhtml/mm6325a4.htm
/nchs/hus/data-finder.htm
/nchs/pressroom/calendar/2026_schedule.htm		 alle 7 pagina's (CSV)
<ul> and <ol> must only directly contain <li>, <script> or <template> elements [list] serious 6 6 /mmwr/preview/mmwrhtml/00038946.htm
/mmwr/preview/mmwrhtml/00017197.htm
/wtc/federal_register.html		 alle 6 pagina's (CSV)
Elements must only use permitted ARIA attributes [aria-prohibited-attr] serious 6 6 /stophivtogether/hiv-stigma/index.html
/stophivtogether/hiv-treatment/index.html
/stophivtogether/hiv-stigma/index.html		 alle 6 pagina's (CSV)
<li> elements must be contained in a <ul> or <ol> [listitem] serious 4 36 /zika/hcp/diagnosis-testing/placental-and-fetal-tissue-specimens.html
/national-asthma-control-program/php/partners/kentucky.html
/group-b-strep/prevention/index.html		 alle 4 pagina's (CSV)
<blink> elements are deprecated and must not be used [blink] serious 4 5 /mmwr/preview/mmwrhtml/rr5202a2.htm
/mmwr/preview/mmwrhtml/rr5009a1.htm
/mmwr/preview/mmwrhtml/mm5640a7.htm		 alle 4 pagina's (CSV)
Elements marked as presentational should be consistently ignored [presentation-role-conflict] minor 1 4 /niosh/npptl/topics/respirators/cel alle 1 pagina's (CSV)
Certain ARIA roles must contain particular children [aria-required-children] critical 1 2 /stophivtogether/hiv-testing/self-testing.html alle 1 pagina's (CSV)
Main landmark should not be contained in another landmark [landmark-main-is-top-level] moderate 1 1 /nhsn/faqs/cms/faq_cms_hai.html alle 1 pagina's (CSV)
Document should not have more than one main landmark [landmark-no-duplicate-main] moderate 1 1 /nhsn/faqs/cms/faq_cms_hai.html alle 1 pagina's (CSV)
Documents must have <title> element to aid in navigation [document-title] serious 1 1 /nchs/pressroom/stat/index.html alle 1 pagina's (CSV)
Buttons must have discernible text [button-name] critical 1 1 /hiv/treatment/index.html alle 1 pagina's (CSV)
Tables should not have the same summary and caption [table-duplicate-name] minor 1 1 /brfss/acbs/2017/multiple_year/acbs_prevalence_15-17_table12.html alle 1 pagina's (CSV)

Bevindingen van Siteimprove Alfa

Rule-level Alfa summary (35 rule type(s))

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

Alfa rules failing in 2026-W40, by pages affected
RegelImpactGetroffen pagina'sGevallenVoorbeeldpagina'sAlle getroffen
Target size is at least 44×44 CSS pixels (Enhanced) [sia-r111] n.v.t. 416 12037 /niosh/publications/es/numbered/2006-110sp.html
/mmwr/volumes/72/wr/mm7216a1.htm
/cryptococcosis		 alle 416 pagina's (CSV)
Text has enhanced contrast [sia-r66] n.v.t. 355 10203 /niosh/publications/es/numbered/2006-110sp.html
/mmwr/volumes/72/wr/mm7216a1.htm
/cryptococcosis		 alle 355 pagina's (CSV)
Scrolling content can be accessed by keyboard [sia-r57] n.v.t. 307 4119 /niosh/publications/es/numbered/2006-110sp.html
/mmwr/volumes/72/wr/mm7216a1.htm
/cryptococcosis		 alle 307 pagina's (CSV)
aria attribute is permitted for element role [sia-r18] n.v.t. 222 278 /niosh/publications/es/numbered/2006-110sp.html
/cryptococcosis
/media/releases/2025/2025-certain-metabolic-meals-home-delivery-foods-reported-in-ongoing-salmonella-outbreak-investigation.html		 alle 222 pagina's (CSV)
Link is distinguishable without relying on color [sia-r74] n.v.t. 192 935 /niosh/publications/es/numbered/2006-110sp.html
/cryptococcosis
/pcd/issues/2013/12_0096.htm		 alle 192 pagina's (CSV)
Target size is at least 24×24 CSS pixels or has spacing (Minimum) [sia-r113] n.v.t. 155 1476 /pcd/issues/2013/12_0096.htm
/mmwr/preview/mmwrhtml/mm5050a3.htm
/pcd/issues/2004/jan/03_0012.htm		 alle 155 pagina's (CSV)
Text has sufficient color contrast (Enhanced) [sia-r69] n.v.t. 154 837 /cryptococcosis
/media/releases/2025/2025-certain-metabolic-meals-home-delivery-foods-reported-in-ongoing-salmonella-outbreak-investigation.html
/nora/councils/construction.html		 alle 154 pagina's (CSV)
Headings are structured hierarchically [sia-r53] n.v.t. 136 184 /mmwr/volumes/72/wr/mm7216a1.htm
/pcd/issues/2013/12_0096.htm
/mmwr/preview/mmwrhtml/mm5050a3.htm		 alle 136 pagina's (CSV)
Text has minimum contrast ratio of 4.5:1 [sia-r73] n.v.t. 130 21730 /pcd/issues/2013/12_0096.htm
/mmwr/preview/mmwrhtml/mm5050a3.htm
/pcd/issues/2004/jan/03_0012.htm		 alle 130 pagina's (CSV)
No obsolete or deprecated elements are used [sia-r70] n.v.t. 102 102 /mmwr/preview/mmwrhtml/mm5050a3.htm
/pcd/issues/2004/jan/03_0012.htm
/mmwr/preview/mmwrhtml/mm6150a2.htm		 alle 102 pagina's (CSV)
Document has a valid lang attribute [sia-r4] n.v.t. 85 85 /mmwr/preview/mmwrhtml/mm5050a3.htm
/pcd/issues/2004/jan/03_0012.htm
/mmwr/preview/mmwrhtml/mm5639md.htm		 alle 85 pagina's (CSV)
Image has accessible name [sia-r2] n.v.t. 84 891 /mmwr/preview/mmwrhtml/mm5050a3.htm
/pcd/issues/2004/jan/03_0012.htm
/mmwr/preview/mmwrhtml/mm5639md.htm		 alle 84 pagina's (CSV)
Form field label is visible [sia-r61] n.v.t. 59 59 /cryptococcosis
/pcd/issues/2013/12_0096.htm
/vaccines/hcp/imz-schedules/index.html		 alle 59 pagina's (CSV)
Presentational children of an element are not focusable [sia-r68] n.v.t. 45 460 /pcd/issues/2013/12_0096.htm
/nchs/nhanes/about-data/index.html
/diabetes/es/diabetes-complications/la-diabetes-y-la-salud-oral.html		 alle 45 pagina's (CSV)
Accessible name of link or button matches visible label [sia-r14] n.v.t. 43 90 /niosh/publications/es/numbered/2006-110sp.html
/nora/councils/construction.html
/active-communities-tool/php/about		 alle 43 pagina's (CSV)
Link has accessible name [sia-r11] n.v.t. 33 85 /niosh/publications/es/numbered/2006-110sp.html
/pcd/issues/2004/jan/03_0012.htm
/az/j.html		 alle 33 pagina's (CSV)
Scrollable element is keyboard accessible [sia-r80] n.v.t. 27 44 /cryptococcosis
/vaccines/hcp/imz-schedules/index.html
/immigrant-refugee-health/about/cdc-role-in-immigration.html		 alle 27 pagina's (CSV)
Table header has scope [sia-r78] n.v.t. 26 36 /pcd/issues/2013/12_0096.htm
/sleeping-sickness/hcp/clinical-care/index.html
/mmwr/volumes/65/wr/mm6536e2.htm		 alle 26 pagina's (CSV)
Form field has accessible name [sia-r8] n.v.t. 23 24 /mmwr/preview/mmwrhtml/mm6150a2.htm
/mmwr/preview/mmwrhtml/mm5943a4.htm
/mmwr/preview/mmwrhtml/mm6248a3.htm		 alle 23 pagina's (CSV)
Duplicate role landmark is labeled [sia-r79] n.v.t. 9 20 /mmwr/preview/mmwrhtml/00052499.htm
/mmwr/preview/mmwrhtml/00051718.htm
/mmwr/preview/mmwrhtml/00053391.htm		 alle 9 pagina's (CSV)
Component with same name serves same purpose [sia-r90] n.v.t. 6 19 /nchs/products/vsrr.htm
/tobacco/campaign/tips/spanish/poblaciones/indoamericanos-o-nativos-de-alaska.html
/stophivtogether/hiv-treatment/index.html		 alle 6 pagina's (CSV)
Button has accessible name [sia-r12] n.v.t. 4 22 /hepatitis/statistics/2021surveillance/hepatitis-a/figure-1.6.htm
/stophivtogether/hiv-treatment/index.html
/ncbddd/birthdefects/data.html		 alle 4 pagina's (CSV)
Element with orientation is not locked [sia-r59] n.v.t. 4 4 /diabetes/programs/preventt2/pledge.html
/mmwr/volumes/66/wr/mm6619md.htm
/pcd/issues/2008/apr/07_0249a.htm		 alle 4 pagina's (CSV)
Element has required aria-owns [sia-r46] n.v.t. 3 45 /brfss/acbs/2012/prevalence_tables/table6.html
/asthma/nhis/08/table4-1.htm
/hepatitis/statistics/2021surveillance/hepatitis-c/table-3.5.htm		 alle 3 pagina's (CSV)
Input purpose can be determined [sia-r60] n.v.t. 3 3 /pcd/issues/2013/12_0096.htm
/pcd/issues/2013/12_0161_es.htm
/pcd/issues/2012/11_0096_es.htm		 alle 3 pagina's (CSV)
First focusable element is link to main content [sia-r87] n.v.t. 3 3 /diabetes/programs/preventt2/pledge.html
/pcd/issues/2008/apr/07_0249a.htm
/flu/weekly/weeklyarchives2024-2025/data/iliage35.html		 alle 3 pagina's (CSV)
Keyboard trap does not exist [sia-r85] n.v.t. 3 3 /han/2023/han00488.html
/han/2023/han00487.html
/han/2024/han00518.html		 alle 3 pagina's (CSV)
Element has required owned roles [sia-r64] n.v.t. 3 3 /mmwr/preview/mmwrhtml/mm5324a6.htm
/niosh/idlh/criteria.html
/mmwr/preview/mmwrhtml/mm5644a1.htm		 alle 3 pagina's (CSV)
Tables are used for tabular data, not layout [sia-r40] n.v.t. 3 3 /orr/data-research/index.html
/nchs/pressroom/stats_of_the_states.htm
/healthy-water-data/documentation/cryptosporidiosis-nndss-summary-report-for-2018.html		 alle 3 pagina's (CSV)
Table cell has header [sia-r77] n.v.t. 2 23 /pcd/issues/2004/jan/03_0012.htm
/fluview/surveillance/2025-week-33.html		 alle 2 pagina's (CSV)
Focus is not lost after interaction [sia-r86] n.v.t. 2 15 /mmwr/volumes/70/wr/mm7040e3.htm
/nchs/healthy_people/hp2020/progress-tables.htm		 alle 2 pagina's (CSV)
Assertive live region is marked as atomic [sia-r54] n.v.t. 2 2 /hepatitis/statistics/2021surveillance/hepatitis-a/figure-1.6.htm
/ncbddd/birthdefects/data.html		 alle 2 pagina's (CSV)
aria-hidden element is not exposed to assistive technology [sia-r45] n.v.t. 1 320 /brfss/acbs/2012/prevalence_tables/table6.html alle 1 pagina's (CSV)
Link in text block is visually distinguishable without color [sia-r62] n.v.t. 1 4 /tobacco/campaign/tips/groups/general-public.html alle 1 pagina's (CSV)
Element role is consistent with ARIA landmark [sia-r72] n.v.t. 1 1 /nchs/healthy_people/hp2020/progress-tables.htm alle 1 pagina's (CSV)

Unieke toegankelijkheidsproblemen (axe + Alfa samengevoegd)

axe en Alfa implementeren beide de W3C ACT-regels, dus hetzelfde probleem wordt vaak door beide gevonden. Deze worden ontdubbeld per ACT-regel en pagina, dus een gedeelde bevinding telt één keer (8104 ruwe enginebevindingen → 7870 uniek).

Unieke problemen (regel × pagina)
7870
Door beide engines gevonden
233 hoogste betrouwbaarheid
Alleen axe
5226
Alleen Alfa
2411
9 regeltype(n) door beide engines gevonden — hoogste betrouwbaarheid

Twee onafhankelijke implementaties van ACT-regels (Deque axe-core en Siteimprove Alfa) markeerden hetzelfde probleem op dezelfde pagina's. Overeenstemming tussen afzonderlijke engines is sterk bewijs dat de barrière echt is en geen vals positief van één tool — de beste plek om te beginnen.

Regels die in 2026-W40 door zowel axe-core als Alfa zijn gemarkeerd, op getroffen pagina's.
ProbleemPagina'sRegelverwijzingen
<html> element must have a lang attribute340axe html-has-lang · Alfa sia-r4 · ACT b5c3f8
Images must have alternative text339axe image-alt · Alfa sia-r2 · ACT 23a2a8
Elements must only use permitted ARIA attributes226axe aria-prohibited-attr · Alfa sia-r18 · ACT 5c01ea
Links must have discernible text141axe link-name · Alfa sia-r11 · ACT c487ae
Form elements must have labels87axe label · Alfa sia-r8 · ACT e086e5
Headings should not be empty22axe empty-heading · Alfa sia-r64 · ACT ffd0e9
ARIA commands must have an accessible name13axe aria-command-name · Alfa sia-r12 · ACT 97a4e1
Table cell headers attributes must refer to other <th> elements in the same table11axe td-headers-attr · Alfa sia-r45 · ACT a25f45
Elements marked as presentational should be consistently ignored3axe presentation-role-conflict · Alfa sia-r86 · ACT 46ca7f