nih.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.

SC	Criterion	Pages	Rules
1.4.1	Use of Color	23	2
1.4.6	WCAG 1.4.6	8	1
1.4.8	WCAG 1.4.8	8	1
2.5.5	WCAG 2.5.5	8	1
1.3.1	Info and Relationships (semantic structure)	4	2

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.
Cluster	Ernst	Pagina's	Wie het treft	Hoe op te lossen	Bewijs	Beslissing
All page content should be contained by landmarks · niet-toegewezen component Fix one place, resolve ~15 finding(s) on 15 page(s). XPath / selector: `.usa-alert` `<div class="usa-alert">`	Matig	15	Vereist handmatige test.	Wrap all page content in landmarks (header, nav, main, footer) so users can navigate by region.	pagina's (CSV)	Beslissing Toegewezen aan Notities
All page content should be contained by landmarks · niet-toegewezen component Fix one place, resolve ~15 finding(s) on 15 page(s). XPath / selector: `#system-breadcrumb` `<h2 id="system-breadcrumb" class="visually-hidden">Breadcrumb</h2>`	Matig	15	Vereist handmatige test.	Wrap all page content in landmarks (header, nav, main, footer) so users can navigate by region.	pagina's (CSV)	Beslissing Toegewezen aan Notities
Form field label is visible · niet-toegewezen component Fix one place, resolve ~8 finding(s) on 8 page(s). XPath / selector: `{"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys`	Matig	8	Vereist handmatige test.	See remediation guidance: https://alfa.siteimprove.com/rules/sia-r61	pagina's (CSV)	Beslissing Toegewezen aan Notities
Landmarks should have a unique role or role/label/title (i.e. accessible name) c · niet-toegewezen component Fix one place, resolve ~5 finding(s) on 5 page(s). XPath / selector: `#block-nih2-uswds-search` `<div class="search-block-form usa-form block block-search container-inline" data-drupal-selector="search-block-form" id="block-nih2-uswds-search" role="search">`	Matig	5	Vereist handmatige test.	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.	pagina's (CSV)	Beslissing Toegewezen aan Notities
Headings are structured hierarchically · niet-toegewezen component Fix one place, resolve ~5 finding(s) on 5 page(s). XPath / selector: `<h3>`	Matig	5	Vereist handmatige test.	Use headings in a logical, non-skipping order.	pagina's (CSV)	Beslissing Toegewezen aan Notities
aria attribute is permitted for element role · niet-toegewezen component Fix one place, resolve ~8 finding(s) on 8 page(s). XPath / selector: `@aria-label="Descripción de la agencia"`	Matig	8	Vereist handmatige test.	Only use ARIA states/properties that are allowed on this element/role.	pagina's (CSV)	Beslissing Toegewezen aan Notities
aria attribute is permitted for element role · niet-toegewezen component Fix one place, resolve ~8 finding(s) on 8 page(s). XPath / selector: `@aria-label="Official website of the Department of Health and Human Services"`	Matig	8	Vereist handmatige test.	Only use ARIA states/properties that are allowed on this element/role.	pagina's (CSV)	Beslissing Toegewezen aan Notities
<ul> and <ol> must only directly contain <li>, <script> or <template> elements · niet-toegewezen component Fix one place, resolve ~2 finding(s) on 2 page(s). XPath / selector: `.usa-pagination__list` `<ul class="usa-pagination__list pager__items js-pager__items">`	Ernstig	2	Without vision, Limited vision, Limited cognitive, language, or learning ability	Use <ul>/<ol> with only <li> children for lists; don't fake lists with <div>s.	pagina's (CSV)	Beslissing Toegewezen aan Notities
Text has enhanced contrast · niet-toegewezen component Fix one place, resolve ~8 finding(s) on 8 page(s). XPath / selector: `text: "Get the Latest Updates and FAQs"`	Matig	8	Vereist handmatige test.	Increase text contrast to meet WCAG AAA (7:1).	pagina's (CSV)	Beslissing Toegewezen aan Notities
Text has enhanced contrast · niet-toegewezen component Fix one place, resolve ~8 finding(s) on 8 page(s). XPath / selector: `text: "Health Information"`	Matig	8	Vereist handmatige test.	Increase text contrast to meet WCAG AAA (7:1).	pagina's (CSV)	Beslissing Toegewezen aan Notities

Foutrapporten

2 probleemtype(n) worden standaard getoond van in totaal 17. Geprioriteerd op ernst, belangrijke pagina's, WCAG-niveau en prevalentie; gebruik de schakelaar om alles te tonen.

Algehele verdeling van ernst: 2 ernstig, 14 matig, 1 gering. Per WCAG-categorie: 4 WCAG 2.0 A, 3 WCAG 2.x AAA, 4 Beste praktijk, 6 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.

De standaardweergave toont 2 geprioriteerd(e) probleemtype(n); 15 meer zijn beschikbaar als u overschakelt naar "Alles tonen".

2 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 link-in-text-block WCAG 2.0 A Links must be distinguishable without relying on color (WCAG 1.4.1) 15/2247 pagina's · 72 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-2317aa31
Patroon-ID: VS-8ade3360
Gecombineerde ID: VS-2317aa31 (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)
Regel: axe-core — Links must be distinguishable without relying on color [link-in-text-block]
Voorbeeld-URL: https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women
XPath / selector: p:nth-child(5) > a[rel="noopener nofollow noreferrer"][title="(opens in a new window)"][data-extlink=""]
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

<a href="https://www.niaid.nih.gov/diseases-conditions/prevention-perinatal-transmission" class="ext" data-extlink="" target="_blank" rel="noopener nofollow noreferrer" title="(opens in a new window)"

Beschrijving

Links must be distinguishable without relying on color. Detected by axe-core rule link-in-text-block on 15 of 2247 scanned pages (72 instances).

Stappen om te reproduceren

Open https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women.
Locate the element: p:nth-child(5) > a[rel="noopener nofollow noreferrer"][title="(opens in a new window)"][data-extlink=""]
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

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

Triagestatus Notities

Ernstig axe list WCAG 2.0 A <ul> and <ol> must only directly contain <li>, <script> or <template> elements (WCAG 1.3.1) 2/2247 pagina's · 2 gevallen Waarschijnlijk inhoud

Bug-ID: VS-83e2c4f1
Patroon-ID: VS-a0bdbdf6
Gecombineerde ID: VS-83e2c4f1 (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)
Regel: axe-core — <ul> and <ol> must only directly contain <li>, <script> or <template> elements [list]
Voorbeeld-URL: https://nih.gov/heal/award-policy/data-sharing-policy/common-data-elements-cdes-repository?page=15
XPath / selector: .usa-pagination__list
Geschiedenis: voor het eerst gezien 2026-W29, laatst gezien 2026-W40 (10 wk)

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

<ul class="usa-pagination__list pager__items js-pager__items">

Beschrijving

<ul> and <ol> must only directly contain <li>, <script> or <template> elements. Detected by axe-core rule list on 2 of 2247 scanned pages (2 instances).

Stappen om te reproduceren

Open https://nih.gov/heal/award-policy/data-sharing-policy/common-data-elements-cdes-repository?page=15.
Locate the element: .usa-pagination__list
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

Triagestatus Notities

Matig axe region Beste praktijk All page content should be contained by landmarks (WCAG criterion undetermined) 15/2247 pagina's · 30 gevallen Waarschijnlijk sjabloon

Bug-ID: VS-2e7fa0ed
Patroon-ID: VS-f18df681
Gecombineerde ID: VS-2e7fa0ed (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
Regel: axe-core — All page content should be contained by landmarks [region]
Voorbeeld-URL: https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women
XPath / selector: .usa-alert
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

<div class="usa-alert">

Beschrijving

All page content should be contained by landmarks. Detected by axe-core rule region on 15 of 2247 scanned pages (30 instances).

Stappen om te reproduceren

Open https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women.
Locate the element: .usa-alert
Confirm the axe-core finding for rule region.

Impact

Not captured by automated scan — requires manual testing.

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

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

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

Triagestatus Notities

Matig alfa sia-r66 WCAG 2.x AAA Text has enhanced contrast (WCAG 1.4.6) 8/2247 pagina's · 390 gevallen

Bug-ID: VS-094b70d4
Patroon-ID: VS-646b1e0b
Gecombineerde ID: VS-094b70d4 (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)
Regel: Siteimprove Alfa — Text has enhanced contrast [sia-r66]
Voorbeeld-URL: https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women
XPath / selector: text: "Get the Latest Updates and FAQs"
Geschiedenis: voor het eerst gezien 2026-W25, laatst gezien 2026-W40 (14 wk)

Beschrijving

Text has enhanced contrast. Detected by Siteimprove Alfa rule sia-r66 on 8 of 2247 scanned pages (390 instances).

Stappen om te reproduceren

Open https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women.
Locate the element: text: "Get the Latest Updates and FAQs"
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

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

Triagestatus Notities

Matig alfa sia-r111 WCAG 2.x AAA Target size is at least 44×44 CSS pixels (Enhanced) (WCAG 2.5.5) 8/2247 pagina's · 206 gevallen

Bug-ID: VS-a4103b94
Patroon-ID: VS-cb53cc4d
Gecombineerde ID: VS-a4103b94 (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)
Regel: Siteimprove Alfa — Target size is at least 44×44 CSS pixels (Enhanced) [sia-r111]
Voorbeeld-URL: https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women
XPath / selector: <a class="usa-button" href="/web-modernization">
Geschiedenis: voor het eerst gezien 2026-W25, laatst gezien 2026-W40 (14 wk)

Beschrijving

Target size is at least 44×44 CSS pixels (Enhanced). Detected by Siteimprove Alfa rule sia-r111 on 8 of 2247 scanned pages (206 instances).

Stappen om te reproduceren

Open https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women.
Locate the element: <a class="usa-button" href="/web-modernization">
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

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

Triagestatus Notities

Matig alfa sia-r57 Onbepaald Scrolling content can be accessed by keyboard (WCAG criterion undetermined) 8/2247 pagina's · 32 gevallen

Bug-ID: VS-a9a4a142
Patroon-ID: VS-c18be945
Gecombineerde ID: VS-a9a4a142 (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
Regel: Siteimprove Alfa — Scrolling content can be accessed by keyboard [sia-r57]
Voorbeeld-URL: https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women
XPath / selector: text: "NIH Websites Are Changing"
Geschiedenis: voor het eerst gezien 2026-W25, laatst gezien 2026-W40 (14 wk)

Beschrijving

Scrolling content can be accessed by keyboard. Detected by Siteimprove Alfa rule sia-r57 on 8 of 2247 scanned pages (32 instances).

Stappen om te reproduceren

Open https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women.
Locate the element: text: "NIH Websites Are Changing"
Confirm the Siteimprove Alfa finding for rule sia-r57.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

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

Triagestatus Notities

Matig alfa sia-r62 WCAG 2.0 A Link in text block is visually distinguishable without color (WCAG 1.4.1) 8/2247 pagina's · 25 gevallen · mogelijk duplicaat

Bug-ID: VS-7088ff58
Patroon-ID: VS-efd91fdd
Gecombineerde ID: VS-7088ff58 (patroon VS-efd91fdd) — 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)
Regel: Siteimprove Alfa — Link in text block is visually distinguishable without color [sia-r62]
Voorbeeld-URL: https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women
XPath / selector: <a href="https://clinicaltrials.gov/ct2/show/NCT03048422" class="ext" data-extlink="" target="_blank">
Geschiedenis: voor het eerst gezien 2026-W25, laatst gezien 2026-W40 (14 wk)
Mogelijk duplicaat: Hetzelfde WCAG-succescriterium gedekt door axe-rapport VS-2317aa31 (patroon VS-8ade3360). Als axe en deze engine hetzelfde element markeren, heeft het axe-rapport voorrang — markeer dit als duplicaat in JIRA.

Beschrijving

Link in text block is visually distinguishable without color. Detected by Siteimprove Alfa rule sia-r62 on 8 of 2247 scanned pages (25 instances).

Stappen om te reproduceren

Open https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women.
Locate the element: <a href="https://clinicaltrials.gov/ct2/show/NCT03048422" class="ext" data-extlink="" target="_blank">
Confirm the Siteimprove Alfa finding for rule sia-r62 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

Testomgeving

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

Voorgestelde oplossing

Hoe op te lossen: Make links visually distinguishable from surrounding text (not by color alone).

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r62

Triagestatus Notities

Matig alfa sia-r73 WCAG 2.x AAA Text has minimum contrast ratio of 4.5:1 (WCAG 1.4.8) 8/2247 pagina's · 25 gevallen

Bug-ID: VS-75eb794a
Patroon-ID: VS-2208081b
Gecombineerde ID: VS-75eb794a (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)
Regel: Siteimprove Alfa — Text has minimum contrast ratio of 4.5:1 [sia-r73]
Voorbeeld-URL: https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women
XPath / selector: <p class="usa-banner__header-text">
Geschiedenis: voor het eerst gezien 2026-W25, laatst gezien 2026-W40 (14 wk)

Beschrijving

Text has minimum contrast ratio of 4.5:1. Detected by Siteimprove Alfa rule sia-r73 on 8 of 2247 scanned pages (25 instances).

Stappen om te reproduceren

Open https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women.
Locate the element: <p class="usa-banner__header-text">
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

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

Triagestatus Notities

Matig alfa sia-r18 Onbepaald aria attribute is permitted for element role (WCAG criterion undetermined) 8/2247 pagina's · 16 gevallen

Bug-ID: VS-13308aba
Patroon-ID: VS-e05344b9
Gecombineerde ID: VS-13308aba (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
Regel: Siteimprove Alfa — aria attribute is permitted for element role [sia-r18]
Voorbeeld-URL: https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women
XPath / selector: @aria-label="Descripción de la agencia"
Geschiedenis: voor het eerst gezien 2026-W25, laatst gezien 2026-W40 (14 wk)

Beschrijving

aria attribute is permitted for element role. Detected by Siteimprove Alfa rule sia-r18 on 8 of 2247 scanned pages (16 instances).

Stappen om te reproduceren

Open https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women.
Locate the element: @aria-label="Descripción de la agencia"
Confirm the Siteimprove Alfa finding for rule sia-r18.

Impact

Not captured by automated scan — requires manual testing.

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

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

Triagestatus Notities

Matig alfa sia-r61 Onbepaald Form field label is visible (WCAG criterion undetermined) 8/2247 pagina's · 8 gevallen

Bug-ID: VS-c47c6a6b
Patroon-ID: VS-7118fead
Gecombineerde ID: VS-c47c6a6b (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
Regel: Siteimprove Alfa — Form field label is visible [sia-r61]
Voorbeeld-URL: https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women
XPath / selector: {"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys
Geschiedenis: voor het eerst gezien 2026-W25, laatst gezien 2026-W40 (14 wk)

Beschrijving

Form field label is visible. Detected by Siteimprove Alfa rule sia-r61 on 8 of 2247 scanned pages (8 instances).

Stappen om te reproduceren

Open https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women.
Locate the element: {"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys
Confirm the Siteimprove Alfa finding for rule sia-r61.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

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

Triagestatus Notities

Matig axe heading-order Beste praktijk Heading levels should only increase by one (WCAG criterion undetermined) 8/2247 pagina's · 8 gevallen

Bug-ID: VS-c4265b78
Patroon-ID: VS-d25f622d
Gecombineerde ID: VS-c4265b78 (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
Regel: axe-core — Heading levels should only increase by one [heading-order]
Voorbeeld-URL: https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women
XPath / selector: article[data-history-node-id="9456"] > div > h3
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

<h3></h3>

Beschrijving

Heading levels should only increase by one. Detected by axe-core rule heading-order on 8 of 2247 scanned pages (8 instances).

Stappen om te reproduceren

Open https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women.
Locate the element: article[data-history-node-id="9456"] > div > h3
Confirm the axe-core finding for rule heading-order.

Impact

Not captured by automated scan — requires manual testing.

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 heading levels in order (h1 → h2 → h3) without skipping; structure, not size.

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

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

Triagestatus Notities

Matig alfa sia-r53 Onbepaald Headings are structured hierarchically (WCAG criterion undetermined) 5/2247 pagina's · 5 gevallen

Bug-ID: VS-d79add99
Patroon-ID: VS-f054f4a4
Gecombineerde ID: VS-d79add99 (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
Regel: Siteimprove Alfa — Headings are structured hierarchically [sia-r53]
Voorbeeld-URL: https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women
XPath / selector: <h3>
Geschiedenis: voor het eerst gezien 2026-W25, laatst gezien 2026-W40 (13 wk)

Beschrijving

Headings are structured hierarchically. Detected by Siteimprove Alfa rule sia-r53 on 5 of 2247 scanned pages (5 instances).

Stappen om te reproduceren

Open https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women.
Locate the element: <h3>
Confirm the Siteimprove Alfa finding for rule sia-r53.

Impact

Not captured by automated scan — requires manual testing.

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

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

Triagestatus Notities

Matig axe landmark-unique Beste praktijk Landmarks should have a unique role or role/label/title (i.e. accessible name) c (WCAG criterion undetermined) 5/2247 pagina's · 5 gevallen

Bug-ID: VS-7ed1eea6
Patroon-ID: VS-8806389c
Gecombineerde ID: VS-7ed1eea6 (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
Regel: axe-core — Landmarks should have a unique role or role/label/title (i.e. accessible name) c [landmark-unique]
Voorbeeld-URL: https://nih.gov/news-events/nih-research-matters/how-age-alters-sepsis-outcomes
XPath / selector: #block-nih2-uswds-search
Geschiedenis: voor het eerst gezien 2026-W29, laatst gezien 2026-W40 (12 wk)

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

<div class="search-block-form usa-form block block-search container-inline" data-drupal-selector="search-block-form" id="block-nih2-uswds-search" role="search">

Beschrijving

Landmarks should have a unique role or role/label/title (i.e. accessible name) c. Detected by axe-core rule landmark-unique on 5 of 2247 scanned pages (5 instances).

Stappen om te reproduceren

Open https://nih.gov/news-events/nih-research-matters/how-age-alters-sepsis-outcomes.
Locate the element: #block-nih2-uswds-search
Confirm the axe-core finding for rule landmark-unique.

Impact

Not captured by automated scan — requires manual testing.

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: 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

Triagestatus Notities

Matig alfa sia-r64 WCAG 2.0 A Element has required owned roles (WCAG 1.3.1) 2/2247 pagina's · 2 gevallen · mogelijk duplicaat Waarschijnlijk inhoud

Bug-ID: VS-596801b5
Patroon-ID: VS-3c632d31
Gecombineerde ID: VS-596801b5 (patroon VS-3c632d31) — 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)
Regel: Siteimprove Alfa — Element has required owned roles [sia-r64]
Voorbeeld-URL: https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women
XPath / selector: <h3>
Geschiedenis: voor het eerst gezien 2026-W25, laatst gezien 2026-W40 (11 wk)
Mogelijk duplicaat: Hetzelfde WCAG-succescriterium gedekt door axe-rapport VS-83e2c4f1 (patroon VS-a0bdbdf6). Als axe en deze engine hetzelfde element markeren, heeft het axe-rapport voorrang — markeer dit als duplicaat in JIRA.

Beschrijving

Element has required owned roles. Detected by Siteimprove Alfa rule sia-r64 on 2 of 2247 scanned pages (2 instances).

Stappen om te reproduceren

Open https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women.
Locate the element: <h3>
Confirm the Siteimprove Alfa finding for rule sia-r64 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: 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-r64

Triagestatus Notities

Matig alfa sia-r85 Onbepaald Keyboard trap does not exist (WCAG criterion undetermined) 2/2247 pagina's · 2 gevallen Waarschijnlijk inhoud

Bug-ID: VS-275c10a7
Patroon-ID: VS-4c341c77
Gecombineerde ID: VS-275c10a7 (patroon VS-4c341c77) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: Onbepaald
Obligation: unmapped
Handling: review
WCAG-succescriterium: onbepaald
Regel: Siteimprove Alfa — Keyboard trap does not exist [sia-r85]
Voorbeeld-URL: https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women
XPath / selector: <p class="nih-slogan">
Geschiedenis: voor het eerst gezien 2026-W29, laatst gezien 2026-W40 (11 wk)

Beschrijving

Keyboard trap does not exist. Detected by Siteimprove Alfa rule sia-r85 on 2 of 2247 scanned pages (2 instances).

Stappen om te reproduceren

Open https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women.
Locate the element: <p class="nih-slogan">
Confirm the Siteimprove Alfa finding for rule sia-r85.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

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-r85

Triagestatus Notities

Matig alfa sia-r78 Onbepaald Table header has scope (WCAG criterion undetermined) 2/2247 pagina's · 2 gevallen Waarschijnlijk inhoud

Bug-ID: VS-471e90c2
Patroon-ID: VS-2cd767ca
Gecombineerde ID: VS-471e90c2 (patroon VS-2cd767ca) — gebruik dit formaat in JIRA/spreadsheets om te filteren op geval of patroon
WCAG-categorie: Onbepaald
Obligation: unmapped
Handling: review
WCAG-succescriterium: onbepaald
Regel: Siteimprove Alfa — Table header has scope [sia-r78]
Voorbeeld-URL: https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women
XPath / selector: <h3>
Geschiedenis: voor het eerst gezien 2026-W29, laatst gezien 2026-W40 (9 wk)

Beschrijving

Table header has scope. Detected by Siteimprove Alfa rule sia-r78 on 2 of 2247 scanned pages (2 instances).

Stappen om te reproduceren

Open https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women.
Locate the element: <h3>
Confirm the Siteimprove Alfa finding for rule sia-r78.

Impact

Not captured by automated scan — requires manual testing.

Getroffen pagina's

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-r78

Triagestatus Notities

Gering axe empty-heading Beste praktijk Headings should not be empty (WCAG criterion undetermined) 2/2247 pagina's · 2 gevallen Waarschijnlijk inhoud

Bug-ID: VS-efdddd74
Patroon-ID: VS-0066c67d
Gecombineerde ID: VS-efdddd74 (patroon VS-0066c67d) — 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
Regel: axe-core — Headings should not be empty [empty-heading]
Voorbeeld-URL: https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women
XPath / selector: article[data-history-node-id="9456"] > div > h3
Geschiedenis: voor het eerst gezien 2026-W25, laatst gezien 2026-W40 (12 wk)

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

<h3></h3>

Beschrijving

Headings should not be empty. Detected by axe-core rule empty-heading on 2 of 2247 scanned pages (2 instances).

Stappen om te reproduceren

Open https://www.nih.gov/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women.
Locate the element: article[data-history-node-id="9456"] > div > h3
Confirm the axe-core finding for rule empty-heading.

Impact

Not captured by automated scan — requires manual testing.

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: Remove empty headings or give them text. Don't use heading tags for spacing.

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

Triagestatus Notities

Bevindingen van Deque axe-core

Rule-level axe-core summary (6 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
Regel	Impact	Getroffen pagina's	Gevallen	Voorbeeldpagina's	Alle getroffen
Links must be distinguishable without relying on color [link-in-text-block]	serious	15	72	/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women /news-events/nih-research-matters/how-age-alters-sepsis-outcomes /brain/funding/dissemination-supplements	alle 15 pagina's (CSV)
All page content should be contained by landmarks [region]	moderate	15	30	/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women /news-events/nih-research-matters/how-age-alters-sepsis-outcomes /brain/funding/dissemination-supplements	alle 15 pagina's (CSV)
Heading levels should only increase by one [heading-order]	moderate	8	8	/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women /news-events/nih-research-matters/how-age-alters-sepsis-outcomes /news-events/nih-research-matters/asthma-cases-dropped-when-air-pollution-declined	alle 8 pagina's (CSV)
Landmarks should have a unique role or role/label/title (i.e. accessible name) combination [landmark-unique]	moderate	5	5	/news-events/nih-research-matters/how-age-alters-sepsis-outcomes /news-events/nih-research-matters/asthma-cases-dropped-when-air-pollution-declined /news-events/nih-research-matters/depression-may-stall-development-new-neurons	alle 5 pagina's (CSV)
Headings should not be empty [empty-heading]	minor	2	2	/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women /news-events/news-releases/nih-northwestern-scientists-develop-potential-new-approach-stop-cancer-metastasis	alle 2 pagina's (CSV)
<ul> and <ol> must only directly contain <li>, <script> or <template> elements [list]	serious	2	2	/heal/award-policy/data-sharing-policy/common-data-elements-cdes-repository /heal/award-policy/data-sharing-policy/common-data-elements-cdes-repository	alle 2 pagina's (CSV)

Bevindingen van Siteimprove Alfa

Rule-level Alfa summary (11 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
Regel	Impact	Getroffen pagina's	Gevallen	Voorbeeldpagina's	Alle getroffen
Text has enhanced contrast [sia-r66]	n.v.t.	8	390	/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women /news-events/nih-research-matters/how-age-alters-sepsis-outcomes /brain/funding/dissemination-supplements	alle 8 pagina's (CSV)
Target size is at least 44×44 CSS pixels (Enhanced) [sia-r111]	n.v.t.	8	206	/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women /news-events/nih-research-matters/how-age-alters-sepsis-outcomes /brain/funding/dissemination-supplements	alle 8 pagina's (CSV)
Scrolling content can be accessed by keyboard [sia-r57]	n.v.t.	8	32	/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women /news-events/nih-research-matters/how-age-alters-sepsis-outcomes /brain/funding/dissemination-supplements	alle 8 pagina's (CSV)
Text has minimum contrast ratio of 4.5:1 [sia-r73]	n.v.t.	8	25	/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women /news-events/nih-research-matters/how-age-alters-sepsis-outcomes /brain/funding/dissemination-supplements	alle 8 pagina's (CSV)
Link in text block is visually distinguishable without color [sia-r62]	n.v.t.	8	25	/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women /news-events/nih-research-matters/how-age-alters-sepsis-outcomes /brain/funding/dissemination-supplements	alle 8 pagina's (CSV)
aria attribute is permitted for element role [sia-r18]	n.v.t.	8	16	/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women /news-events/nih-research-matters/how-age-alters-sepsis-outcomes /brain/funding/dissemination-supplements	alle 8 pagina's (CSV)
Form field label is visible [sia-r61]	n.v.t.	8	8	/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women /news-events/nih-research-matters/how-age-alters-sepsis-outcomes /brain/funding/dissemination-supplements	alle 8 pagina's (CSV)
Headings are structured hierarchically [sia-r53]	n.v.t.	5	5	/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women /news-events/nih-research-matters/how-age-alters-sepsis-outcomes /news-events/nih-research-matters/asthma-cases-dropped-when-air-pollution-declined	alle 5 pagina's (CSV)
Keyboard trap does not exist [sia-r85]	n.v.t.	2	2	/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women /news-events/news-releases/nih-northwestern-scientists-develop-potential-new-approach-stop-cancer-metastasis	alle 2 pagina's (CSV)
Table header has scope [sia-r78]	n.v.t.	2	2	/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women /news-events/news-releases/nih-northwestern-scientists-develop-potential-new-approach-stop-cancer-metastasis	alle 2 pagina's (CSV)
Element has required owned roles [sia-r64]	n.v.t.	2	2	/news-events/news-releases/nih-begins-large-hiv-treatment-study-pregnant-women /news-events/news-releases/nih-northwestern-scientists-develop-potential-new-approach-stop-cancer-metastasis	alle 2 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 (114 ruwe enginebevindingen → 112 uniek).

Unieke problemen (regel × pagina): 112
Door beide engines gevonden: 2 hoogste betrouwbaarheid
Alleen axe: 45
Alleen Alfa: 65

1 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.
Probleem	Pagina's	Regelverwijzingen
Headings should not be empty	2	axe empty-heading · Alfa sia-r64 · ACT ffd0e9