# Accessibility bug reports — www.cdc.gov, week 2026-W25

74 issue type(s) from 1667 pages scanned. Generated 2026-07-12 by [vital-scans](https://github.com/mgifford/vital-core), following [accessibility bug-reporting best practices](https://mgifford.github.io/ACCESSIBILITY.md/examples/ACCESSIBILITY_BUG_REPORTING_BEST_PRACTICES.html).

> Automated checks find roughly a third of accessibility barriers. Fields marked "requires manual testing" cannot be observed by an automated scan and need a human with assistive technology.

---
## Target size is at least 24×24 CSS pixels or has spacing (Minimum) (WCAG 2.5.8)

**Bug ID:** `VS-5535f378`  
**Pattern ID:** `VS-179ad9b3`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm  
**XPath / selector:** `<a href="#content_area">`  
**WCAG SC:** 2.5.8 — Target Size (Minimum) (Level AA)  
**Rule:** Siteimprove Alfa — `sia-r113` ([reference](https://alfa.siteimprove.com/rules/sia-r113))  
**Severity:** Moderate  
**Frequency:** 2646 instances; 243 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Target size is at least 24×24 CSS pixels or has spacing (Minimum). Detected by Siteimprove Alfa rule sia-r113 on 243 of 1667 scanned pages (2646 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm.
2. Locate the element: <a href="#content_area">
3. Confirm the Siteimprove Alfa finding for rule sia-r113 against WCAG 2.5.8 Target Size (Minimum).

### Impact
Affects Limited manipulation/strength (13.0%), Limited reach (2.0%), Limited vision (2.4%).
- **Limited manipulation/strength** (13.0% of population)
- **Limited reach** (2.0% of population)
- **Limited vision** (2.4% of population)

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/monkeypox/signs-symptoms/index.html
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- https://www.cdc.gov/niosh/ocas/ocasirep.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a7.htm?s_cid=mm6010a7_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm
- http://www.cdc.gov/pcd/issues/2011/nov/11_0018_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5714a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047030.htm
- https://www.cdc.gov/niosh/learning/safetyculturehc/module-4/11.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a2.htm?s_cid=mm5924a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050819.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0085_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00032050.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000840.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5745a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5716a4.htm
- https://www.cdc.gov/nhsn/ipfs/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5921a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5033a5.htm
- https://www.cdc.gov/pcd/for_authors/visual_abstracts.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a5.htm?s_cid=mm6010a5_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5940md.htm?s_cid=mm5940md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6031a2.htm?s_cid=mm6031a2_w

…and more — 243 pages total ([download CSV](csv/alfa__sia-r113.csv)).

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

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

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/monkeypox/signs-symptoms/index.html
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm

---

## Accessible name of link or button matches visible label (WCAG 2.5.3)

**Bug ID:** `VS-f437bf53`  
**Pattern ID:** `VS-f7dba940`  
**URL:** https://www.cdc.gov/steadi/hcp/clinical-resources/index.html  
**XPath / selector:** `<a aria-label="View" target="_blank" class="cdc-block-link" href="/steadi/media/pdfs/STEADI-Algorithm-508.pdf">`  
**WCAG SC:** 2.5.3 — Label in Name (Level A)  
**Rule:** Siteimprove Alfa — `sia-r14` ([reference](https://alfa.siteimprove.com/rules/sia-r14))  
**Severity:** Moderate  
**Frequency:** 146 instances; 67 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Accessible name of link or button matches visible label. Detected by Siteimprove Alfa rule sia-r14 on 67 of 1667 scanned pages (146 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/steadi/hcp/clinical-resources/index.html.
2. Locate the element: <a aria-label="View" target="_blank" class="cdc-block-link" href="/steadi/media/pdfs/STEADI-Algorithm-508.pdf">
3. Confirm the Siteimprove Alfa finding for rule sia-r14 against WCAG 2.5.3 Label in Name.

### Impact
Affects Without vision (1.0%), Without speech (0.5%).
- **Without vision** (1.0% of population)
- **Without speech** (0.5% of population)

### Affected pages
- https://www.cdc.gov/steadi/hcp/clinical-resources/index.html
- http://www.cdc.gov/nchhstp/whats-new/recruitment-director-2026.html
- https://www.cdc.gov/global-water-sanitation-hygiene/es/about/global-drinking-water.html
- https://www.cdc.gov/diabetes/es/about/acerca-de-la-cetoacidosis-diabetica.html
- https://www.cdc.gov/monkeypox/hcp/infection-control/index.html
- https://www.cdc.gov/environmental-health-tracking/php/communications-resources/index.html
- https://www.cdc.gov/tobacco/campaign/tips/spanish/acerca/Carga-del-consumo-de-tabaco-en-los-Estados-Unidos.html
- https://www.cdc.gov/hepatitis-surveillance-2023/hepatitis-c/index.html
- https://www.cdc.gov/ecoli/outbreaks/rawcheese-03-26/investigation.html
- https://www.cdc.gov/ecoli/php/technical-info/index.html
- https://www.cdc.gov/balamuthia/about/index.html
- https://www.cdc.gov/spanish/NIOSH/docs/2008-112_sp
- https://www.cdc.gov/salmonella/outbreaks/cotham-06-24
- https://www.cdc.gov/angiostrongylus/prevention/index.html
- https://www.cdc.gov/spanish/NIOSH/docs/2014-103_sp
- https://www.cdc.gov/heat-health/es/risk-factors/el-calor-y-las-personas-que-trabajan-al-aire-libre.html
- https://www.cdc.gov/healthy-swimming/es/safety/directrices-para-mantener-la-piscina-segura-y-saludable.html
- https://www.cdc.gov/me-cfs/about/fast-facts-about-me-cfs.html
- https://www.cdc.gov/west-nile-virus/php/outbreak-communication/print-products.html
- https://www.cdc.gov/tobacco/campaign/tips/spanish/dejar-fumar/index.html
- https://www.cdc.gov/steadi
- https://www.cdc.gov/international-infection-control/hcp/about/gaihn-ar.html
- https://www.cdc.gov/vaccines-children/before-during-after-shots/less-stress.html
- https://www.cdc.gov/ovarian-cancer/es/treatment/index.html
- https://www.cdc.gov/uterine-cancer/es/treatment/index.html

…and more — 67 pages total ([download CSV](csv/alfa__sia-r14.csv)).

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

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

### Example pages
- https://www.cdc.gov/steadi/hcp/clinical-resources/index.html
- http://www.cdc.gov/nchhstp/whats-new/recruitment-director-2026.html
- https://www.cdc.gov/global-water-sanitation-hygiene/es/about/global-drinking-water.html

---

## Images must have alternative text (WCAG 1.1.1)

**Bug ID:** `VS-7787596c`  
**Pattern ID:** `VS-9074b4dd`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm  
**XPath / selector:** `td[rowspan="2"][width="10"]:nth-child(1) > img[alt=" "][width="10"][src$="spacer.gif"]`  
**WCAG SC:** 1.1.1 — Non-text Content (Level A)  
**Rule:** axe-core — `image-alt` ([reference](https://dequeuniversity.com/rules/axe/4.12/image-alt?application=axeAPI))  
**Severity:** Critical  
**Frequency:** 3365 instances; 281 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<img src="../../images/spacer.gif" width="10" height="1" alt=" " border="0">
```

### Description
Images must have alternative text. Detected by axe-core rule image-alt on 281 of 1667 scanned pages (3365 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm.
2. Locate the element: td[rowspan="2"][width="10"]:nth-child(1) > img[alt=" "][width="10"][src$="spacer.gif"]
3. Confirm the axe-core finding for rule image-alt against WCAG 1.1.1 Non-text Content.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm
- https://www.cdc.gov/pcd/issues/2005/jul/cover.htm
- https://www.cdc.gov/pcd/issues/2006/oct/memoriam.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- https://www.cdc.gov/pcd/issues/2011/nov/10_0191_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm
- http://www.cdc.gov/pcd/issues/2011/nov/11_0018_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000683.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00025213.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5714a5.htm
- https://www.cdc.gov/pcd/issues/2011/nov/11_0043_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00046564.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050819.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023565.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0085_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00048778.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000782.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001301.htm
- https://www.cdc.gov/pcd/issues/2010/sep/cover.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00033868.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00032050.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000840.htm

…and more — 281 pages total ([download CSV](csv/axe-core__image-alt.csv)).

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

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

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

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm
- https://www.cdc.gov/pcd/issues/2005/jul/cover.htm
- https://www.cdc.gov/pcd/issues/2006/oct/memoriam.htm

---

## Image has accessible name (WCAG 1.1.1)

**Bug ID:** `VS-2945f2b0`  
**Pattern ID:** `VS-a24eaa8c`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm  
**XPath / selector:** `<img src="../../images/spacer.gif" width="10" height="1" alt=" ">`  
**WCAG SC:** 1.1.1 — Non-text Content (Level A)  
**Rule:** Siteimprove Alfa — `sia-r2` ([reference](https://alfa.siteimprove.com/rules/sia-r2))  
**Severity:** Moderate  
**Frequency:** 1609 instances; 136 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Image has accessible name. Detected by Siteimprove Alfa rule sia-r2 on 136 of 1667 scanned pages (1609 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm.
2. Locate the element: <img src="../../images/spacer.gif" width="10" height="1" alt=" ">
3. Confirm the Siteimprove Alfa finding for rule sia-r2 against WCAG 1.1.1 Non-text Content.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm
- http://www.cdc.gov/pcd/issues/2011/nov/11_0018_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5714a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050819.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0085_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00032050.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000840.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5745a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5716a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5033a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001229.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5114a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000757.htm
- https://www.cdc.gov/pcd/issues/2006/oct/05_0009_fr.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015286.htm
- https://www.cdc.gov/pcd/issues/2006/oct/05_0243.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00031959.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5631a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5706a4.htm
- https://www.cdc.gov/pcd/es/2007_apr_toc.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026747.htm

…and more — 136 pages total ([download CSV](csv/alfa__sia-r2.csv)).

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

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

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

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm

---

## Certain ARIA roles must contain particular children (WCAG 1.3.1)

**Bug ID:** `VS-14ef4926`  
**Pattern ID:** `VS-9429bb8d`  
**URL:** https://www.cdc.gov/dpdx/diagnosticProcedures/stool/morphcomp.html  
**XPath / selector:** `div[role="tablist"]:nth-child(1)`  
**WCAG SC:** 1.3.1 — Info and Relationships (Level A)  
**Rule:** axe-core — `aria-required-children` ([reference](https://dequeuniversity.com/rules/axe/4.12/aria-required-children?application=axeAPI))  
**Severity:** Critical  
**Frequency:** 2 instances; 1 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### HTML snippet
```html
<div id="accord" role="tablist">
```

### Description
Certain ARIA roles must contain particular children. Detected by axe-core rule aria-required-children on 1 of 1667 scanned pages (2 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/dpdx/diagnosticProcedures/stool/morphcomp.html.
2. Locate the element: div[role="tablist"]:nth-child(1)
3. Confirm the axe-core finding for rule aria-required-children against WCAG 1.3.1 Info and Relationships.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/dpdx/diagnosticProcedures/stool/morphcomp.html

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

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

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

---

## <ul> and <ol> must only directly contain <li>, <script> or <template> elements (WCAG 1.3.1)

**Bug ID:** `VS-fb60616a`  
**Pattern ID:** `VS-a0bdbdf6`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm  
**XPath / selector:** `ol[type="1"]:nth-child(36)`  
**WCAG SC:** 1.3.1 — Info and Relationships (Level A)  
**Rule:** axe-core — `list` ([reference](https://dequeuniversity.com/rules/axe/4.12/list?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 26 instances; 19 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<ol type="1">
```

### Description
<ul> and <ol> must only directly contain <li>, <script> or <template> elements. Detected by axe-core rule list on 19 of 1667 scanned pages (26 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm.
2. Locate the element: ol[type="1"]:nth-child(36)
3. Confirm the axe-core finding for rule list against WCAG 1.3.1 Info and Relationships.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm
- https://www.cdc.gov/bird-flu/php/surveillance/h5n1-human-infections.html
- https://www.cdc.gov/fluview/surveillance/2026-week-08.html
- https://www.cdc.gov/vaccines/php/rise/data-for-action.html
- https://www.cdc.gov/bird-flu/prevention/employer-provided-ppe.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023631.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001929.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001879.htm
- https://www.cdc.gov/library/research-guides/logic-models.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000018.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00035463.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00033405.htm
- https://www.cdc.gov/bird-flu/h5-monitoring/index.html?CDC_AA_refVal=https%3A%2F%2Fwww.cdc.gov%2Fflu%2Favianflu%2Fh5-monitoring.html
- https://www.cdc.gov/bird-flu/worker-safety/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00055154.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5514a1.htm
- https://www.cdc.gov/pcd/issues/2017/16_0381.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00032436.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4851a2.htm

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

### Suggested fix
**How to fix:** 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

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm
- https://www.cdc.gov/bird-flu/php/surveillance/h5n1-human-infections.html
- https://www.cdc.gov/fluview/surveillance/2026-week-08.html

---

## <li> elements must be contained in a <ul> or <ol> (WCAG 1.3.1)

**Bug ID:** `VS-0c719151`  
**Pattern ID:** `VS-6175596b`  
**URL:** https://www.cdc.gov/niosh/ocas/hanford.html  
**XPath / selector:** `.syndicate:nth-child(4) > li:nth-child(28)`  
**WCAG SC:** 1.3.1 — Info and Relationships (Level A)  
**Rule:** axe-core — `listitem` ([reference](https://dequeuniversity.com/rules/axe/4.12/listitem?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 42 instances; 6 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<li>
```

### Description
<li> elements must be contained in a <ul> or <ol>. Detected by axe-core rule listitem on 6 of 1667 scanned pages (42 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/niosh/ocas/hanford.html.
2. Locate the element: .syndicate:nth-child(4) > li:nth-child(28)
3. Confirm the axe-core finding for rule listitem against WCAG 1.3.1 Info and Relationships.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/niosh/ocas/hanford.html
- https://www.cdc.gov/phleads/php/about/index.html
- https://www.cdc.gov/radiation-health/data-research/facts-stats/ct-scans.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5514a1.htm
- https://www.cdc.gov/hepatitis-c/hcp/diagnosis-testing?CDC_AAref_Val=https%3A%2F%2Fwww.cdc.gov%2Fknowmorehepatitis%2Fhcp%2FTest-For-HepC-During-Pregnancy.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5517a1.htm

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

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

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

### Example pages
- https://www.cdc.gov/niosh/ocas/hanford.html
- https://www.cdc.gov/phleads/php/about/index.html
- https://www.cdc.gov/radiation-health/data-research/facts-stats/ct-scans.html

---

## Table cell headers attributes must refer to other <th> elements in the same tabl (WCAG 1.3.1)

**Bug ID:** `VS-a146ea15`  
**Pattern ID:** `VS-07ba3b17`  
**URL:** https://www.cdc.gov/yellow-book/hcp/environmental-hazards-risks/food-poisoning-from-marine-toxins.html  
**XPath / selector:** `.table-responsive:nth-child(2) > div > table`  
**WCAG SC:** 1.3.1 — Info and Relationships (Level A)  
**Rule:** axe-core — `td-headers-attr` ([reference](https://dequeuniversity.com/rules/axe/4.12/td-headers-attr?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 12 instances; 3 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### HTML snippet
```html
<table class="table table-bordered table-striped">
```

### Description
Table cell headers attributes must refer to other <th> elements in the same tabl. Detected by axe-core rule td-headers-attr on 3 of 1667 scanned pages (12 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/yellow-book/hcp/environmental-hazards-risks/food-poisoning-from-marine-toxins.html.
2. Locate the element: .table-responsive:nth-child(2) > div > table
3. Confirm the axe-core finding for rule td-headers-attr against WCAG 1.3.1 Info and Relationships.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/yellow-book/hcp/environmental-hazards-risks/food-poisoning-from-marine-toxins.html
- https://www.cdc.gov/vaccines/hcp/imz-schedules/adult-age.html
- https://www.cdc.gov/dpdx/diagnosticProcedures/stool/morphcomp.html

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

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

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

### Example pages
- https://www.cdc.gov/yellow-book/hcp/environmental-hazards-risks/food-poisoning-from-marine-toxins.html
- https://www.cdc.gov/vaccines/hcp/imz-schedules/adult-age.html
- https://www.cdc.gov/dpdx/diagnosticProcedures/stool/morphcomp.html

---

## Presentational children of an element are not focusable (WCAG 1.3.1)

**Bug ID:** `VS-0a0bd9c0`  
**Pattern ID:** `VS-d6097011`  
**URL:** https://www.cdc.gov/trichomoniasis/about/index.html  
**XPath / selector:** `<ul>`  
**WCAG SC:** 1.3.1 — Info and Relationships (Level A)  
**Rule:** Siteimprove Alfa — `sia-r68` ([reference](https://alfa.siteimprove.com/rules/sia-r68))  
**Severity:** Moderate  
**Frequency:** 1269 instances; 87 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Presentational children of an element are not focusable. Detected by Siteimprove Alfa rule sia-r68 on 87 of 1667 scanned pages (1269 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/trichomoniasis/about/index.html.
2. Locate the element: <ul>
3. Confirm the Siteimprove Alfa finding for rule sia-r68 against WCAG 1.3.1 Info and Relationships.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/trichomoniasis/about/index.html
- https://www.cdc.gov/tobacco-health-equity/collection/anhpi.html
- https://www.cdc.gov/diabetes/es/about/acerca-de-la-cetoacidosis-diabetica.html
- https://www.cdc.gov/hymenolepis/about
- https://www.cdc.gov/Vaping
- https://www.cdc.gov/restaurant-food-safety/php/practices/food-allergy-reactions.html
- https://www.cdc.gov/bird-flu/php/surveillance/h5n1-human-infections.html
- https://www.cdc.gov/hepatitis-surveillance-2023/hepatitis-c/index.html
- https://www.cdc.gov/breast-ovarian-cancer-hereditary/php/algorithm/index.html
- https://www.cdc.gov/ecoli/php/technical-info/index.html
- https://www.cdc.gov/climate-health/php/resources/index.html
- https://www.cdc.gov/genomics-and-health/about/pharmacogenetics.html
- https://www.cdc.gov/relapsing-fever/about/about-lbrf.html
- https://www.cdc.gov/healthy-pets/emergency-preparedness/pets-in-evacuation-centers.html
- https://www.cdc.gov/salmonella/outbreaks/cotham-06-24
- https://www.cdc.gov/angiostrongylus/prevention/index.html
- https://www.cdc.gov/library/research-guides/search-alert.html
- https://www.cdc.gov/genomics-and-health/about/genetic-counseling.html
- https://www.cdc.gov/dhds/about/index.html
- https://www.cdc.gov/mosquitoes/about/about-mosquito-bites.html
- https://www.cdc.gov/healthy-pets/about/ferrets.html
- https://www.cdc.gov/cancer-survivors/patients/lymphedema.html
- https://www.cdc.gov/vaccines/php/rise/data-for-action.html
- https://www.cdc.gov/ebola/hcp/vaccines/index.html
- https://www.cdc.gov/heat-health/es/risk-factors/el-calor-y-las-personas-que-trabajan-al-aire-libre.html

…and more — 87 pages total ([download CSV](csv/alfa__sia-r68.csv)).

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

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

### Example pages
- https://www.cdc.gov/trichomoniasis/about/index.html
- https://www.cdc.gov/tobacco-health-equity/collection/anhpi.html
- https://www.cdc.gov/diabetes/es/about/acerca-de-la-cetoacidosis-diabetica.html

---

## Table cell has header (WCAG 1.3.1)

**Bug ID:** `VS-1c8f03ab`  
**Pattern ID:** `VS-3f067795`  
**URL:** https://www.cdc.gov/physical-activity/php/strategies/increasing-physical-activity-through-community-design-prevention-strategies.html  
**XPath / selector:** `<td align="center" valign="top" class="w-6 text-center">`  
**WCAG SC:** 1.3.1 — Info and Relationships (Level A)  
**Rule:** Siteimprove Alfa — `sia-r77` ([reference](https://alfa.siteimprove.com/rules/sia-r77))  
**Severity:** Moderate  
**Frequency:** 3109 instances; 3 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Table cell has header. Detected by Siteimprove Alfa rule sia-r77 on 3 of 1667 scanned pages (3109 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/physical-activity/php/strategies/increasing-physical-activity-through-community-design-prevention-strategies.html.
2. Locate the element: <td align="center" valign="top" class="w-6 text-center">
3. Confirm the Siteimprove Alfa finding for rule sia-r77 against WCAG 1.3.1 Info and Relationships.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/physical-activity/php/strategies/increasing-physical-activity-through-community-design-prevention-strategies.html
- https://www.cdc.gov/fluview/surveillance/2026-week-08.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6008md.htm?s_cid=mm6008md_w

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

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r77

### Example pages
- https://www.cdc.gov/physical-activity/php/strategies/increasing-physical-activity-through-community-design-prevention-strategies.html
- https://www.cdc.gov/fluview/surveillance/2026-week-08.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6008md.htm?s_cid=mm6008md_w

---

## Element has required aria-owns (WCAG 1.3.1)

**Bug ID:** `VS-a5d974a7`  
**Pattern ID:** `VS-4408605e`  
**URL:** https://www.cdc.gov/vaccines/hcp/imz-schedules/child-adolescent-catch-up.html  
**XPath / selector:** `<th id="t2c1r9" headers="t2c1">`  
**WCAG SC:** 1.3.1 — Info and Relationships (Level A)  
**Rule:** Siteimprove Alfa — `sia-r46` ([reference](https://alfa.siteimprove.com/rules/sia-r46))  
**Severity:** Moderate  
**Frequency:** 6 instances; 3 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### Description
Element has required aria-owns. Detected by Siteimprove Alfa rule sia-r46 on 3 of 1667 scanned pages (6 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/vaccines/hcp/imz-schedules/child-adolescent-catch-up.html.
2. Locate the element: <th id="t2c1r9" headers="t2c1">
3. Confirm the Siteimprove Alfa finding for rule sia-r46 against WCAG 1.3.1 Info and Relationships.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/vaccines/hcp/imz-schedules/child-adolescent-catch-up.html
- https://www.cdc.gov/flu/whats-new/22-23-summary-technical-report.html
- https://www.cdc.gov/vaccines/hcp/imz-schedules/adult-age.html

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

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r46

### Example pages
- https://www.cdc.gov/vaccines/hcp/imz-schedules/child-adolescent-catch-up.html
- https://www.cdc.gov/flu/whats-new/22-23-summary-technical-report.html
- https://www.cdc.gov/vaccines/hcp/imz-schedules/adult-age.html

---

## aria-hidden element is not exposed to assistive technology (WCAG 1.3.1)

**Bug ID:** `VS-ad45479d`  
**Pattern ID:** `VS-9207ed51`  
**URL:** https://www.cdc.gov/vaccines/hcp/imz-schedules/child-adolescent-catch-up.html  
**XPath / selector:** `@headers="t2c1r9 t2c3 t2c3c"`  
**WCAG SC:** 1.3.1 — Info and Relationships (Level A)  
**Rule:** Siteimprove Alfa — `sia-r45` ([reference](https://alfa.siteimprove.com/rules/sia-r45))  
**Severity:** Moderate  
**Frequency:** 19 instances; 2 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### Description
aria-hidden element is not exposed to assistive technology. Detected by Siteimprove Alfa rule sia-r45 on 2 of 1667 scanned pages (19 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/vaccines/hcp/imz-schedules/child-adolescent-catch-up.html.
2. Locate the element: @headers="t2c1r9 t2c3 t2c3c"
3. Confirm the Siteimprove Alfa finding for rule sia-r45 against WCAG 1.3.1 Info and Relationships.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/vaccines/hcp/imz-schedules/child-adolescent-catch-up.html
- https://www.cdc.gov/vaccines/hcp/imz-schedules/adult-age.html

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

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r45

### Example pages
- https://www.cdc.gov/vaccines/hcp/imz-schedules/child-adolescent-catch-up.html
- https://www.cdc.gov/vaccines/hcp/imz-schedules/adult-age.html

---

## Element has required owned roles (WCAG 1.3.1)

**Bug ID:** `VS-66183760`  
**Pattern ID:** `VS-3c632d31`  
**URL:** https://www.cdc.gov/nchs/products/databriefs/db453.htm  
**XPath / selector:** `<h5>`  
**WCAG SC:** 1.3.1 — Info and Relationships (Level A)  
**Rule:** Siteimprove Alfa — `sia-r64` ([reference](https://alfa.siteimprove.com/rules/sia-r64))  
**Severity:** Moderate  
**Frequency:** 2 instances; 2 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Element has required owned roles. Detected by Siteimprove Alfa rule sia-r64 on 2 of 1667 scanned pages (2 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/nchs/products/databriefs/db453.htm.
2. Locate the element: <h5>
3. 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% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/nchs/products/databriefs/db453.htm
- https://www.cdc.gov/niosh/idlh

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

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r64

### Example pages
- https://www.cdc.gov/nchs/products/databriefs/db453.htm
- https://www.cdc.gov/niosh/idlh

---

## Links must be distinguishable without relying on color (WCAG 1.4.1)

**Bug ID:** `VS-6cb92e1d`  
**Pattern ID:** `VS-8ade3360`  
**URL:** https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html  
**XPath / selector:** `.all-pages`  
**WCAG SC:** 1.4.1 — Use of Color (Level A)  
**Rule:** axe-core — `link-in-text-block` ([reference](https://dequeuniversity.com/rules/axe/4.12/link-in-text-block?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 38 instances; 24 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

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

### Description
Links must be distinguishable without relying on color. Detected by axe-core rule link-in-text-block on 24 of 1667 scanned pages (38 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html.
2. Locate the element: .all-pages
3. Confirm the axe-core finding for rule link-in-text-block against WCAG 1.4.1 Use of Color.

### Impact
Affects Without color perception (4.5%), Limited vision (2.4%).
- **Without color perception** (4.5% of population)
- **Limited vision** (2.4% of population)

### Affected pages
- https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html
- https://www.cdc.gov/infection-control/hcp/healthcare-personnel-epidemiology-control/pregnant-hcp.html
- https://www.cdc.gov/spanish/niosh/docs/2007-150_sp/default.html
- https://www.cdc.gov/infection-control/hcp/isolation-precautions/appendix-a-table-1.html
- https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/phase-6-communication-and-dissemination.html
- https://www.cdc.gov/suicide/playbook/step-3.html
- https://www.cdc.gov/spanish/niosh/docs/2007-150_sp
- https://www.cdc.gov/vaccine-safety/vaccines/rotavirus.html
- https://www.cdc.gov/healthcare-associated-infections/php/preventing-mdros/correctional-facilities.html
- https://www.cdc.gov/healthcare-associated-infections/php/preventing-mdros/what-can-be-done.html
- https://www.cdc.gov/vaccine-safety/vaccines/hib.html
- https://www.cdc.gov/suicide/playbook/step-7.html
- https://www.cdc.gov/healthcare-associated-infections/php/prevention-epicenters/harvard.html
- https://www.cdc.gov/shingles/hcp/infection-control/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5912a1.htm
- https://www.cdc.gov/healthcare-associated-infections/php/preventing-mdros/mdro-containment-strategy.html
- https://www.cdc.gov/suicide/playbook/behavior-change.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5911a1.htm
- https://www.cdc.gov/infection-control/hcp/isolation-precautions/authors.html
- https://www.cdc.gov/malaria/hcp/clinical-guidance/treatment-of-severe-malaria.html
- https://www.cdc.gov/infection-control/hcp/isolation-precautions/appendix-a-table-2.html
- https://www.cdc.gov/healthcare-associated-infections/php/prevention-epicenters/iowa.html
- https://www.cdc.gov/spanish/NIOSH/docs/2013-153_sp
- https://www.cdc.gov/hepatitis-surveillance-2023/hepatitis-c/figure-3-2.html

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

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

### Example pages
- https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html
- https://www.cdc.gov/infection-control/hcp/healthcare-personnel-epidemiology-control/pregnant-hcp.html
- https://www.cdc.gov/spanish/niosh/docs/2007-150_sp/default.html

---

## Link in text block is visually distinguishable without color (WCAG 1.4.1)

**Bug ID:** `VS-e49e1fd7`  
**Pattern ID:** `VS-efd91fdd`  
**URL:** https://www.cdc.gov/tobacco/campaign/tips/diseases/secondhand-smoke-asthma.html  
**XPath / selector:** `<a class="noline" href="#two">`  
**WCAG SC:** 1.4.1 — Use of Color (Level A)  
**Rule:** Siteimprove Alfa — `sia-r62` ([reference](https://alfa.siteimprove.com/rules/sia-r62))  
**Severity:** Moderate  
**Frequency:** 20 instances; 5 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Link in text block is visually distinguishable without color. Detected by Siteimprove Alfa rule sia-r62 on 5 of 1667 scanned pages (20 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/tobacco/campaign/tips/diseases/secondhand-smoke-asthma.html.
2. Locate the element: <a class="noline" href="#two">
3. 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% of population)
- **Limited vision** (2.4% of population)

### Affected pages
- https://www.cdc.gov/tobacco/campaign/tips/diseases/secondhand-smoke-asthma.html
- https://www.cdc.gov/spanish/NIOSH/docs/2008-112_sp
- https://www.cdc.gov/spanish/NIOSH/docs/wp-solutions/2013-104_sp
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5951a3.htm?s_cid=mm5951a3_w
- https://www.cdc.gov/spanish/NIOSH/docs/2013-153_sp

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

### Suggested fix
**How to fix:** Make links visually distinguishable from surrounding text (not by color alone).

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

### Example pages
- https://www.cdc.gov/tobacco/campaign/tips/diseases/secondhand-smoke-asthma.html
- https://www.cdc.gov/spanish/NIOSH/docs/2008-112_sp
- https://www.cdc.gov/spanish/NIOSH/docs/wp-solutions/2013-104_sp

---

## Scrollable region must have keyboard access (WCAG 2.1.1)

**Bug ID:** `VS-dc1eba5a`  
**Pattern ID:** `VS-c613c153`  
**URL:** https://www.cdc.gov/fluview/surveillance/2026-week-08.html  
**XPath / selector:** `.cdc_page_element.dfe-block--cdcmodule.dfe-block--width-standard:nth-child(5) > .dfe-block__inner > .cdc-textblock > div`  
**WCAG SC:** 2.1.1 — Keyboard (Level A)  
**Rule:** axe-core — `scrollable-region-focusable` ([reference](https://dequeuniversity.com/rules/axe/4.12/scrollable-region-focusable?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 4 instances; 3 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<div style="overflow-x: auto;">
```

### Description
Scrollable region must have keyboard access. Detected by axe-core rule scrollable-region-focusable on 3 of 1667 scanned pages (4 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/fluview/surveillance/2026-week-08.html.
2. Locate the element: .cdc_page_element.dfe-block--cdcmodule.dfe-block--width-standard:nth-child(5) > .dfe-block__inner > .cdc-textblock > div
3. Confirm the axe-core finding for rule scrollable-region-focusable against WCAG 2.1.1 Keyboard.

### Impact
Affects Without vision (1.0%), Limited manipulation/strength (13.0%), Limited reach (2.0%).
- **Without vision** (1.0% of population)
- **Limited manipulation/strength** (13.0% of population)
- **Limited reach** (2.0% of population)

### Affected pages
- https://www.cdc.gov/fluview/surveillance/2026-week-08.html
- https://www.cdc.gov/flu/es/about/acerca-de-la-influenza.html
- https://www.cdc.gov/yellow-book/hcp/refugees-immigrants-migrants/pre-arrival-medical-screening-and-interventions.html

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

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

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

### Example pages
- https://www.cdc.gov/fluview/surveillance/2026-week-08.html
- https://www.cdc.gov/flu/es/about/acerca-de-la-influenza.html
- https://www.cdc.gov/yellow-book/hcp/refugees-immigrants-migrants/pre-arrival-medical-screening-and-interventions.html

---

## <blink> elements are deprecated and must not be used (WCAG 2.2.2)

**Bug ID:** `VS-f6146b68`  
**Pattern ID:** `VS-4b45acfe`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5604a1.htm  
**XPath / selector:** `blink`  
**WCAG SC:** 2.2.2 — Pause, Stop, Hide (Level A)  
**Rule:** axe-core — `blink` ([reference](https://dequeuniversity.com/rules/axe/4.12/blink?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 1 instances; 1 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### HTML snippet
```html
<blink><big><strong>Disclaimer</strong></big>
</blink>
```

### Description
<blink> elements are deprecated and must not be used. Detected by axe-core rule blink on 1 of 1667 scanned pages (1 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5604a1.htm.
2. Locate the element: blink
3. Confirm the axe-core finding for rule blink against WCAG 2.2.2 Pause, Stop, Hide.

### Impact
Affects Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5604a1.htm

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

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

---

## Documents must have <title> element to aid in navigation (WCAG 2.4.2)

**Bug ID:** `VS-0f0dcadf`  
**Pattern ID:** `VS-c80d5faa`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5906a2.htm  
**XPath / selector:** `#js`  
**WCAG SC:** 2.4.2 — Page Titled (Level A)  
**Rule:** axe-core — `document-title` ([reference](https://dequeuniversity.com/rules/axe/4.12/document-title?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 1 instances; 1 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

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

### Description
Documents must have <title> element to aid in navigation. Detected by axe-core rule document-title on 1 of 1667 scanned pages (1 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5906a2.htm.
2. Locate the element: #js
3. Confirm the axe-core finding for rule document-title against WCAG 2.4.2 Page Titled.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5906a2.htm

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

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

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

---

## Document has a title element (WCAG 2.4.2)

**Bug ID:** `VS-bfda3683`  
**Pattern ID:** `VS-0728f339`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5906a2.htm  
**XPath / selector:** `{"type":"document","children":[{"type":"type","name":"html","publicId":"-//W3C//`  
**WCAG SC:** 2.4.2 — Page Titled (Level A)  
**Rule:** Siteimprove Alfa — `sia-r1` ([reference](https://alfa.siteimprove.com/rules/sia-r1))  
**Severity:** Moderate  
**Frequency:** 1 instances; 1 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### Description
Document has a title element. Detected by Siteimprove Alfa rule sia-r1 on 1 of 1667 scanned pages (1 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5906a2.htm.
2. Locate the element: {"type":"document","children":[{"type":"type","name":"html","publicId":"-//W3C//
3. Confirm the Siteimprove Alfa finding for rule sia-r1 against WCAG 2.4.2 Page Titled.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5906a2.htm

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

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r1

---

## Links must have discernible text (WCAG 2.4.4)

**Bug ID:** `VS-3787474c`  
**Pattern ID:** `VS-e9fe47ac`  
**URL:** https://www.cdc.gov/pcd/issues/2005/jul/cover.htm  
**XPath / selector:** `table[cellpadding="0"]:nth-child(2) > tbody > tr > td[width="140"] > a[href$="cdc.gov/"]`  
**WCAG SC:** 2.4.4 — Link Purpose (In Context) (Level A)  
**Rule:** axe-core — `link-name` ([reference](https://dequeuniversity.com/rules/axe/4.12/link-name?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 204 instances; 107 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

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

### Description
Links must have discernible text. Detected by axe-core rule link-name on 107 of 1667 scanned pages (204 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2005/jul/cover.htm.
2. Locate the element: table[cellpadding="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% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/pcd/issues/2005/jul/cover.htm
- https://www.cdc.gov/pcd/issues/2006/oct/memoriam.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- https://www.cdc.gov/pcd/issues/2011/nov/10_0191_es.htm
- http://www.cdc.gov/pcd/issues/2011/nov/11_0018_es.htm
- https://www.cdc.gov/pcd/issues/2011/nov/11_0043_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0085_es.htm
- https://www.cdc.gov/pcd/issues/2010/sep/cover.htm
- https://www.cdc.gov/spanish/az/g.html
- https://www.cdc.gov/spanish/az/m.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5913a1.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0020_zhs.htm
- https://www.cdc.gov/pcd/issues/2006/oct/05_0009_fr.htm
- https://www.cdc.gov/pcd/issues/2006/oct/05_0243.htm
- https://www.cdc.gov/spanish/az/p.html
- https://www.cdc.gov/pcd/es/2007_apr_toc.htm
- https://www.cdc.gov/pcd/issues/2005/nov/05_0071_zhs.htm
- http://www.cdc.gov/pcd/issues/2010/sep/09_0173_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5916a2.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0022_zhs.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0276_zhs.htm
- https://www.cdc.gov/pcd/issues/2005/nov/05_0073_fr.htm
- https://www.cdc.gov/pcd/issues/2008/jan/cover.htm
- http://www.cdc.gov/pcd/issues/2008/oct/08_0057_es.htm

…and more — 107 pages total ([download CSV](csv/axe-core__link-name.csv)).

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

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

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

### Example pages
- https://www.cdc.gov/pcd/issues/2005/jul/cover.htm
- https://www.cdc.gov/pcd/issues/2006/oct/memoriam.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm

---

## Link has accessible name (WCAG 2.4.4)

**Bug ID:** `VS-2960879b`  
**Pattern ID:** `VS-28ebd979`  
**URL:** https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm  
**XPath / selector:** `<a href="http://www.cdc.gov/">`  
**WCAG SC:** 2.4.4 — Link Purpose (In Context) (Level A)  
**Rule:** Siteimprove Alfa — `sia-r11` ([reference](https://alfa.siteimprove.com/rules/sia-r11))  
**Severity:** Moderate  
**Frequency:** 89 instances; 45 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Link has accessible name. Detected by Siteimprove Alfa rule sia-r11 on 45 of 1667 scanned pages (89 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm.
2. Locate the element: <a href="http://www.cdc.gov/">
3. Confirm the Siteimprove Alfa finding for rule sia-r11 against WCAG 2.4.4 Link Purpose (In Context).

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- http://www.cdc.gov/pcd/issues/2011/nov/11_0018_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0085_es.htm
- https://www.cdc.gov/spanish/az/m.html
- https://www.cdc.gov/pcd/issues/2006/oct/05_0009_fr.htm
- https://www.cdc.gov/pcd/issues/2006/oct/05_0243.htm
- https://www.cdc.gov/pcd/es/2007_apr_toc.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0276_zhs.htm
- https://www.cdc.gov/pcd/issues/2005/nov/05_0073_fr.htm
- https://www.cdc.gov/pcd/issues/2008/jan/cover.htm
- http://www.cdc.gov/pcd/issues/2006/oct/06_0033_zhs.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0064.htm
- https://www.cdc.gov/pcd/issues/2009/jan/toc.htm
- https://www.cdc.gov/pcd/issues/2008/oct/07_0164_fr.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0168_es.htm
- https://www.cdc.gov/pcd/issues/2006/oct/06_0045.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0022.htm
- https://www.cdc.gov/pcd/issues/2007/apr/06_0024_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0242_zhs.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0263_zht.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0022_zht.htm
- https://www.cdc.gov/pcd/issues/2006/oct/06_0034.htm
- https://www.cdc.gov/pcd/issues/2011/nov/10_0221_es.htm
- https://www.cdc.gov/pcd/issues/2011/nov/10_0264_es.htm

…and more — 45 pages total ([download CSV](csv/alfa__sia-r11.csv)).

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

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

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

### Example pages
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- http://www.cdc.gov/pcd/issues/2011/nov/11_0018_es.htm

---

## <html> element must have a lang attribute (WCAG 3.1.1)

**Bug ID:** `VS-f37fdf14`  
**Pattern ID:** `VS-c126b6a6`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm  
**XPath / selector:** `html`  
**WCAG SC:** 3.1.1 — Language of Page (Level A)  
**Rule:** axe-core — `html-has-lang` ([reference](https://dequeuniversity.com/rules/axe/4.12/html-has-lang?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 272 instances; 272 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<html>
```

### Description
<html> element must have a lang attribute. Detected by axe-core rule html-has-lang on 272 of 1667 scanned pages (272 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm.
2. Locate the element: html
3. Confirm the axe-core finding for rule html-has-lang against WCAG 3.1.1 Language of Page.

### Impact
Affects Without vision (1.0%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm
- https://www.cdc.gov/pcd/issues/2005/jul/cover.htm
- https://www.cdc.gov/pcd/issues/2006/oct/memoriam.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- https://www.cdc.gov/pcd/issues/2011/nov/10_0191_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm
- http://www.cdc.gov/pcd/issues/2011/nov/11_0018_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000683.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00025213.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5714a5.htm
- https://www.cdc.gov/pcd/issues/2011/nov/11_0043_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00046564.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050819.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023565.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0085_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00048778.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000782.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001301.htm
- https://www.cdc.gov/pcd/issues/2010/sep/cover.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00033868.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00032050.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000840.htm

…and more — 272 pages total ([download CSV](csv/axe-core__html-has-lang.csv)).

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

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

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

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm
- https://www.cdc.gov/pcd/issues/2005/jul/cover.htm
- https://www.cdc.gov/pcd/issues/2006/oct/memoriam.htm

---

## Document has a valid lang attribute (WCAG 3.1.1)

**Bug ID:** `VS-3320462d`  
**Pattern ID:** `VS-7a0e5645`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm  
**XPath / selector:** `<html>`  
**WCAG SC:** 3.1.1 — Language of Page (Level A)  
**Rule:** Siteimprove Alfa — `sia-r4` ([reference](https://alfa.siteimprove.com/rules/sia-r4))  
**Severity:** Moderate  
**Frequency:** 134 instances; 134 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Document has a valid lang attribute. Detected by Siteimprove Alfa rule sia-r4 on 134 of 1667 scanned pages (134 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm.
2. Locate the element: <html>
3. Confirm the Siteimprove Alfa finding for rule sia-r4 against WCAG 3.1.1 Language of Page.

### Impact
Affects Without vision (1.0%), Limited cognitive, language, or learning ability (11.0%).
- **Without vision** (1.0% of population)
- **Limited cognitive, language, or learning ability** (11.0% of population)

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm
- http://www.cdc.gov/pcd/issues/2011/nov/11_0018_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5714a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050819.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0085_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00032050.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000840.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5745a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5716a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5033a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001229.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5114a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000757.htm
- https://www.cdc.gov/pcd/issues/2006/oct/05_0009_fr.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015286.htm
- https://www.cdc.gov/pcd/issues/2006/oct/05_0243.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00031959.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5631a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5706a4.htm
- https://www.cdc.gov/pcd/es/2007_apr_toc.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026747.htm

…and more — 134 pages total ([download CSV](csv/alfa__sia-r4.csv)).

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

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

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

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm

---

## Form elements must have labels (WCAG 4.1.2)

**Bug ID:** `VS-507c5861`  
**Pattern ID:** `VS-fafffee0`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5941md.htm?s_cid=mm5941md_w  
**XPath / selector:** `#searchBox`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** axe-core — `label` ([reference](https://dequeuniversity.com/rules/axe/4.12/label?application=axeAPI))  
**Severity:** Critical  
**Frequency:** 337 instances; 82 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

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

### Description
Form elements must have labels. Detected by axe-core rule label on 82 of 1667 scanned pages (337 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5941md.htm?s_cid=mm5941md_w.
2. Locate the element: #searchBox
3. Confirm the axe-core finding for rule label against WCAG 4.1.2 Name, Role, Value.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited manipulation/strength** (13.0% of population)

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5941md.htm?s_cid=mm5941md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a7.htm?s_cid=mm6010a7_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5950a3.htm?s_cid=mm5950a3_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a2.htm?s_cid=mm5924a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5913md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5946a6.htm?s_cid=mm5946a6_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5917a8.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5921a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6008a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a5.htm?s_cid=mm6010a5_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5940md.htm?s_cid=mm5940md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6031a2.htm?s_cid=mm6031a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6022a3.htm?s_cid=mm6022a3_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5916md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6045a4.htm?s_cid=mm6045a4_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6011a3.htm?s_cid=mm6011a3_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6026a6.htm?s_cid=mm6026a6_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5935a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5910md.htm
- https://www.cdc.gov/overdose-prevention/data-research/facts-stats/dose-dis-accessible.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a4.htm?s_cid=mm6010a4_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5948a5.htm?s_cid=mm5948a5_w
- https://www.cdc.gov/pcd/es/2014_toc.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6036a5.htm?s_cid=mm6036a5_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5928a1.htm?s_cid=mm5928a1_w

…and more — 82 pages total ([download CSV](csv/axe-core__label.csv)).

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

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

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

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5941md.htm?s_cid=mm5941md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a7.htm?s_cid=mm6010a7_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5950a3.htm?s_cid=mm5950a3_w

---

## Select element must have an accessible name (WCAG 4.1.2)

**Bug ID:** `VS-61fdbd1e`  
**Pattern ID:** `VS-fab92378`  
**URL:** https://www.cdc.gov/tobacco/campaign/tips/spanish/dejar-fumar/medicamentos/como-usar-medicamentos/chicle-de-nicotina.html  
**XPath / selector:** `#medicine`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** axe-core — `select-name` ([reference](https://dequeuniversity.com/rules/axe/4.12/select-name?application=axeAPI))  
**Severity:** Critical  
**Frequency:** 24 instances; 9 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### HTML snippet
```html
<select id="medicine" onchange="window.location = this.options[this.selectedIndex].value;">
```

### Description
Select element must have an accessible name. Detected by axe-core rule select-name on 9 of 1667 scanned pages (24 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/tobacco/campaign/tips/spanish/dejar-fumar/medicamentos/como-usar-medicamentos/chicle-de-nicotina.html.
2. Locate the element: #medicine
3. Confirm the axe-core finding for rule select-name against WCAG 4.1.2 Name, Role, Value.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited manipulation/strength** (13.0% of population)

### Affected pages
- https://www.cdc.gov/tobacco/campaign/tips/spanish/dejar-fumar/medicamentos/como-usar-medicamentos/chicle-de-nicotina.html
- https://www.cdc.gov/dhds/about/index.html
- https://www.cdc.gov/nchs/products/databriefs.htm
- https://www.cdc.gov/overdose-prevention/data-research/facts-stats/dose-dashboard-nonfatal-surveillance-data.html
- https://www.cdc.gov/tobacco/campaign/tips/quit-smoking/quit-smoking-medications/how-to-use-quit-smoking-medicines/index.html
- https://www.cdc.gov/bird-flu/h5-monitoring/index.html?CDC_AA_refVal=https%3A%2F%2Fwww.cdc.gov%2Fflu%2Favianflu%2Fh5-monitoring.html
- https://www.cdc.gov/breastfeeding-data/county-initiation/index.html
- http://www.cdc.gov/heatrisk
- https://www.cdc.gov/nchs/hus/data-finder.htm?subject=Diabetes

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

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

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

### Example pages
- https://www.cdc.gov/tobacco/campaign/tips/spanish/dejar-fumar/medicamentos/como-usar-medicamentos/chicle-de-nicotina.html
- https://www.cdc.gov/dhds/about/index.html
- https://www.cdc.gov/nchs/products/databriefs.htm

---

## Elements must only use supported ARIA attributes (WCAG 4.1.2)

**Bug ID:** `VS-673c26dc`  
**Pattern ID:** `VS-1467ea8a`  
**URL:** https://www.cdc.gov/nchs/data-visualization/index.htm  
**XPath / selector:** `#natality-mortality-trends_dashboard_desc`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** axe-core — `aria-allowed-attr` ([reference](https://dequeuniversity.com/rules/axe/4.12/aria-allowed-attr?application=axeAPI))  
**Severity:** Critical  
**Frequency:** 15 instances; 1 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### HTML snippet
```html
<div class="text" id="natality-mortality-trends_dashboard_desc" aria-expanded="false" tabindex="-1">
```

### Description
Elements must only use supported ARIA attributes. Detected by axe-core rule aria-allowed-attr on 1 of 1667 scanned pages (15 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/nchs/data-visualization/index.htm.
2. Locate the element: #natality-mortality-trends_dashboard_desc
3. Confirm the axe-core finding for rule aria-allowed-attr against WCAG 4.1.2 Name, Role, Value.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited manipulation/strength** (13.0% of population)

### Affected pages
- https://www.cdc.gov/nchs/data-visualization/index.htm

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

### Suggested fix
**How to fix:** Remove ARIA attributes that aren't allowed on this role/element.

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

---

## ARIA roles used must conform to valid values (WCAG 4.1.2)

**Bug ID:** `VS-1c0afcbe`  
**Pattern ID:** `VS-5178ae33`  
**URL:** http://www.cdc.gov/heatrisk  
**XPath / selector:** `app-intro-page-heatrisk-intro`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** axe-core — `aria-roles` ([reference](https://dequeuniversity.com/rules/axe/4.12/aria-roles?application=axeAPI))  
**Severity:** Critical  
**Frequency:** 5 instances; 1 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### HTML snippet
```html
<app-intro-page-heatrisk-intro _nghost-ng-c4116664259="" class="section moduleZone ng-star-inserted" role="section">
```

### Description
ARIA roles used must conform to valid values. Detected by axe-core rule aria-roles on 1 of 1667 scanned pages (5 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/heatrisk.
2. Locate the element: app-intro-page-heatrisk-intro
3. Confirm the axe-core finding for rule aria-roles against WCAG 4.1.2 Name, Role, Value.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited manipulation/strength** (13.0% of population)

### Affected pages
- http://www.cdc.gov/heatrisk

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

### Suggested fix
**How to fix:** Use a valid ARIA role; check spelling and that it's a real role from the ARIA spec.

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

---

## Frames must have an accessible name (WCAG 4.1.2)

**Bug ID:** `VS-3cd353b6`  
**Pattern ID:** `VS-3f76c7ea`  
**URL:** https://www.cdc.gov/stop-overdose/caring/fentanyl-facts.html  
**XPath / selector:** `iframe`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** axe-core — `frame-title` ([reference](https://dequeuniversity.com/rules/axe/4.12/frame-title?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 19 instances; 16 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<iframe src="//www.youtube-nocookie.com/embed/stpS6515WGo?autohide=0&enablejsapi=1&modestbranding=1&rel=0&origin=https://www.cdc.gov?autohide=0&enablejsapi=1&modestbranding=1&rel=0&origin=https://www.
```

### Description
Frames must have an accessible name. Detected by axe-core rule frame-title on 16 of 1667 scanned pages (19 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/stop-overdose/caring/fentanyl-facts.html.
2. Locate the element: iframe
3. Confirm the axe-core finding for rule frame-title against WCAG 4.1.2 Name, Role, Value.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited manipulation/strength** (13.0% of population)

### Affected pages
- https://www.cdc.gov/stop-overdose/caring/fentanyl-facts.html
- https://www.cdc.gov/vaccines/resources/protect-baby-from-getting-sick.html
- https://www.cdc.gov/youth-violence/about/about-bullying.html
- https://www.cdc.gov/cancer-survivors/patients/lymphedema.html
- https://www.cdc.gov/bird-flu/video-series/symptoms-h5n1.html
- https://www.cdc.gov/disability-and-health/articles-documents/multimedia.html
- https://www.cdc.gov/breast-ovarian-cancer-hereditary/genetic-counsling/index.html
- https://www.cdc.gov/nchs/ccqder/index.html
- https://www.cdc.gov/bird-flu/video-series/dr-ocasio-h5n1.html
- https://www.cdc.gov/skin-cancer/es/sun-safety/index.html
- https://www.cdc.gov/cancer/hcp/communication-resources/index.html
- https://www.cdc.gov/vaccines/es/resources/video-ayuda-a-proteger-a-tu-bebe-contra-enfermedades-graves.html
- https://www.cdc.gov/cancer/risk-factors/tobacco.html
- https://www.cdc.gov/project-firstline/about/index.html
- https://www.cdc.gov/cervical-cancer/screening/index.html
- https://www.cdc.gov/uterine-cancer/es/symptoms/index.html

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

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

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

### Example pages
- https://www.cdc.gov/stop-overdose/caring/fentanyl-facts.html
- https://www.cdc.gov/vaccines/resources/protect-baby-from-getting-sick.html
- https://www.cdc.gov/youth-violence/about/about-bullying.html

---

## Interactive controls must not be nested (WCAG 4.1.2)

**Bug ID:** `VS-3023e0e4`  
**Pattern ID:** `VS-58301a87`  
**URL:** https://www.cdc.gov/tobacco/campaign/tips/diseases/secondhand-smoke-asthma.html  
**XPath / selector:** `#acc-header-2`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** axe-core — `nested-interactive` ([reference](https://dequeuniversity.com/rules/axe/4.12/nested-interactive?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 11 instances; 7 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

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

### Description
Interactive controls must not be nested. Detected by axe-core rule nested-interactive on 7 of 1667 scanned pages (11 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/tobacco/campaign/tips/diseases/secondhand-smoke-asthma.html.
2. Locate the element: #acc-header-2
3. Confirm the axe-core finding for rule nested-interactive against WCAG 4.1.2 Name, Role, Value.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited manipulation/strength** (13.0% of population)

### Affected pages
- https://www.cdc.gov/tobacco/campaign/tips/diseases/secondhand-smoke-asthma.html
- https://www.cdc.gov/tobacco/campaign/tips/spanish/acerca/Carga-del-consumo-de-tabaco-en-los-Estados-Unidos.html
- https://www.cdc.gov/tobacco/campaign/tips/spanish/poblaciones/discapacidades.html
- https://www.cdc.gov/tobacco/campaign/tips/spanish/poblaciones/vih.html
- https://www.cdc.gov/tobacco/campaign/tips/spanish/dejar-fumar/portal-nacional-texto.html
- https://www.cdc.gov/tobacco/campaign/tips/spanish/poblaciones/personas-con-afecciones-mentales.html
- https://www.cdc.gov/tobacco/campaign/tips/diseases/heart-disease-stroke.html

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

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

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

### Example pages
- https://www.cdc.gov/tobacco/campaign/tips/diseases/secondhand-smoke-asthma.html
- https://www.cdc.gov/tobacco/campaign/tips/spanish/acerca/Carga-del-consumo-de-tabaco-en-los-Estados-Unidos.html
- https://www.cdc.gov/tobacco/campaign/tips/spanish/poblaciones/discapacidades.html

---

## ARIA commands must have an accessible name (WCAG 4.1.2)

**Bug ID:** `VS-5dfb768e`  
**Pattern ID:** `VS-5c82bd60`  
**URL:** https://www.cdc.gov/mumps/outbreaks/index.html  
**XPath / selector:** `.horizontal > thead > tr > th:nth-child(1) > .sort-icon[role="button"]`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** axe-core — `aria-command-name` ([reference](https://dequeuniversity.com/rules/axe/4.12/aria-command-name?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 32 instances; 3 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<span role="button" class="sort-icon"><svg class="up" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 10 5"><path d="M0 5l5-5 5 5z"></path></svg><svg class="down" xmlns="http://www.w3.org/2000/svg" vi
```

### Description
ARIA commands must have an accessible name. Detected by axe-core rule aria-command-name on 3 of 1667 scanned pages (32 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mumps/outbreaks/index.html.
2. Locate the element: .horizontal > thead > tr > th:nth-child(1) > .sort-icon[role="button"]
3. Confirm the axe-core finding for rule aria-command-name against WCAG 4.1.2 Name, Role, Value.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited manipulation/strength** (13.0% of population)

### Affected pages
- https://www.cdc.gov/mumps/outbreaks/index.html
- https://www.cdc.gov/breastfeeding-data/county-initiation/index.html
- http://www.cdc.gov/heatrisk

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

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

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

### Example pages
- https://www.cdc.gov/mumps/outbreaks/index.html
- https://www.cdc.gov/breastfeeding-data/county-initiation/index.html
- http://www.cdc.gov/heatrisk

---

## ARIA input fields must have an accessible name (WCAG 4.1.2)

**Bug ID:** `VS-f2832fde`  
**Pattern ID:** `VS-0841abc2`  
**URL:** https://www.cdc.gov/overdose-prevention/data-research/facts-stats/dose-dashboard-nonfatal-surveillance-data.html  
**XPath / selector:** `.rc-slider-handle-1`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** axe-core — `aria-input-field-name` ([reference](https://dequeuniversity.com/rules/axe/4.12/aria-input-field-name?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 2 instances; 1 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### HTML snippet
```html
<div tabindex="0" class="rc-slider-handle rc-slider-handle-1" role="slider" aria-valuemin="1" aria-valuemax="87" aria-valuenow="49" aria-disabled="false" style="left: 55.814%; right: auto; transform: 
```

### Description
ARIA input fields must have an accessible name. Detected by axe-core rule aria-input-field-name on 1 of 1667 scanned pages (2 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/overdose-prevention/data-research/facts-stats/dose-dashboard-nonfatal-surveillance-data.html.
2. Locate the element: .rc-slider-handle-1
3. Confirm the axe-core finding for rule aria-input-field-name against WCAG 4.1.2 Name, Role, Value.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited manipulation/strength** (13.0% of population)

### Affected pages
- https://www.cdc.gov/overdose-prevention/data-research/facts-stats/dose-dashboard-nonfatal-surveillance-data.html

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

### Suggested fix
See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/aria-input-field-name?application=axeAPI

---

## Form field has accessible name (WCAG 4.1.2)

**Bug ID:** `VS-1816a0ac`  
**Pattern ID:** `VS-a48e6078`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a7.htm?s_cid=mm6010a7_w  
**XPath / selector:** `<input id="searchBox" class="searchBox" name="query" maxlength="256">`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** Siteimprove Alfa — `sia-r8` ([reference](https://alfa.siteimprove.com/rules/sia-r8))  
**Severity:** Moderate  
**Frequency:** 66 instances; 36 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Form field has accessible name. Detected by Siteimprove Alfa rule sia-r8 on 36 of 1667 scanned pages (66 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a7.htm?s_cid=mm6010a7_w.
2. Locate the element: <input id="searchBox" class="searchBox" name="query" maxlength="256">
3. Confirm the Siteimprove Alfa finding for rule sia-r8 against WCAG 4.1.2 Name, Role, Value.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited manipulation/strength** (13.0% of population)

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a7.htm?s_cid=mm6010a7_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a2.htm?s_cid=mm5924a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5921a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a5.htm?s_cid=mm6010a5_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5940md.htm?s_cid=mm5940md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6031a2.htm?s_cid=mm6031a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5916md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6011a3.htm?s_cid=mm6011a3_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5935a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a4.htm?s_cid=mm6010a4_w
- https://www.cdc.gov/dhds/about/index.html
- https://www.cdc.gov/nchs/products/databriefs.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5936a1.htm?s_cid=mm5936a1_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5922a4.htm?s_cid=mm5922a4_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5906a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6008a7.htm?s_cid=mm6008a7_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6020a2.htm?s_cid=mm6020a2_w
- https://www.cdc.gov/mmwr/index2008.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6017a6.htm?s_cid=mm6017a6_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6028a3.htm?s_cid=mm6028a3_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6007a7.htm?s_cid=mm6007a7_w
- https://www.cdc.gov/tobacco/campaign/tips/quit-smoking/quit-smoking-medications/how-to-use-quit-smoking-medicines/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5941a5.htm?s_cid=mm5941a5_w
- https://www.cdc.gov/act-early/es/digital-online-checklist/2-months.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5939a1.htm?s_cid=mm5939a1_w

…and more — 36 pages total ([download CSV](csv/alfa__sia-r8.csv)).

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

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

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

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a7.htm?s_cid=mm6010a7_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a2.htm?s_cid=mm5924a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5921a3.htm

---

## Component with same name serves same purpose (WCAG 4.1.2)

**Bug ID:** `VS-b24ad4bc`  
**Pattern ID:** `VS-a2a3dffb`  
**URL:** https://www.cdc.gov/tobacco/campaign/tips/diseases/secondhand-smoke-asthma.html  
**XPath / selector:** `<div class="card-header h4 bg-white rounded-0 collapsed" role="tab" id="acc-header-2" href="#acc-panel-2">`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** Siteimprove Alfa — `sia-r90` ([reference](https://alfa.siteimprove.com/rules/sia-r90))  
**Severity:** Moderate  
**Frequency:** 3 instances; 3 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Component with same name serves same purpose. Detected by Siteimprove Alfa rule sia-r90 on 3 of 1667 scanned pages (3 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/tobacco/campaign/tips/diseases/secondhand-smoke-asthma.html.
2. Locate the element: <div class="card-header h4 bg-white rounded-0 collapsed" role="tab" id="acc-header-2" href="#acc-panel-2">
3. Confirm the Siteimprove Alfa finding for rule sia-r90 against WCAG 4.1.2 Name, Role, Value.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited manipulation/strength** (13.0% of population)

### Affected pages
- https://www.cdc.gov/tobacco/campaign/tips/diseases/secondhand-smoke-asthma.html
- https://www.cdc.gov/tobacco/campaign/tips/spanish/acerca/Carga-del-consumo-de-tabaco-en-los-Estados-Unidos.html
- https://www.cdc.gov/tobacco/campaign/tips/spanish/poblaciones/personas-con-afecciones-mentales.html

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

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r90

### Example pages
- https://www.cdc.gov/tobacco/campaign/tips/diseases/secondhand-smoke-asthma.html
- https://www.cdc.gov/tobacco/campaign/tips/spanish/acerca/Carga-del-consumo-de-tabaco-en-los-Estados-Unidos.html
- https://www.cdc.gov/tobacco/campaign/tips/spanish/poblaciones/personas-con-afecciones-mentales.html

---

## Button has accessible name (WCAG 4.1.2)

**Bug ID:** `VS-acae9923`  
**Pattern ID:** `VS-29f9f921`  
**URL:** https://www.cdc.gov/mumps/outbreaks/index.html  
**XPath / selector:** `<span role="button" class="sort-icon">`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** Siteimprove Alfa — `sia-r12` ([reference](https://alfa.siteimprove.com/rules/sia-r12))  
**Severity:** Moderate  
**Frequency:** 28 instances; 1 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### Description
Button has accessible name. Detected by Siteimprove Alfa rule sia-r12 on 1 of 1667 scanned pages (28 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mumps/outbreaks/index.html.
2. Locate the element: <span role="button" class="sort-icon">
3. Confirm the Siteimprove Alfa finding for rule sia-r12 against WCAG 4.1.2 Name, Role, Value.

### Impact
Affects Without vision (1.0%), Limited vision (2.4%), Limited manipulation/strength (13.0%).
- **Without vision** (1.0% of population)
- **Limited vision** (2.4% of population)
- **Limited manipulation/strength** (13.0% of population)

### Affected pages
- https://www.cdc.gov/mumps/outbreaks/index.html

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

### Suggested fix
**How to fix:** Give the button an accessible name via text, aria-label, or aria-labelledby.

See remediation guidance: https://alfa.siteimprove.com/rules/sia-r12

---

## Elements must meet minimum color contrast ratio thresholds (WCAG 1.4.3)

**Bug ID:** `VS-78ab118f`  
**Pattern ID:** `VS-be8d563e`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm  
**XPath / selector:** `a[name="content_area"] > font[color="red"]`  
**WCAG SC:** 1.4.3 — Contrast (Minimum) (Level AA)  
**Rule:** axe-core — `color-contrast` ([reference](https://dequeuniversity.com/rules/axe/4.12/color-contrast?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 453 instances; 286 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

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

### Description
Elements must meet minimum color contrast ratio thresholds. Detected by axe-core rule color-contrast on 286 of 1667 scanned pages (453 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm.
2. Locate the element: a[name="content_area"] > font[color="red"]
3. Confirm the axe-core finding for rule color-contrast against WCAG 1.4.3 Contrast (Minimum).

### Impact
Affects Limited vision (2.4%), Without color perception (4.5%).
- **Limited vision** (2.4% of population)
- **Without color perception** (4.5% of population)

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5941md.htm?s_cid=mm5941md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a7.htm?s_cid=mm6010a7_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000683.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00025213.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5714a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00046564.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5950a3.htm?s_cid=mm5950a3_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a2.htm?s_cid=mm5924a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050819.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023565.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00048778.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5913md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000782.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5946a6.htm?s_cid=mm5946a6_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001301.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5917a8.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00033868.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00032050.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000840.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5745a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5716a4.htm

…and more — 286 pages total ([download CSV](csv/axe-core__color-contrast.csv)).

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

### Suggested fix
**How to fix:** Increase the contrast between text and its background to at least 4.5:1 (3:1 for large text). Check both light and dark modes.

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

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5941md.htm?s_cid=mm5941md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm

---

## Text has sufficient color contrast (Enhanced) (WCAG 1.4.3)

**Bug ID:** `VS-80f8e418`  
**Pattern ID:** `VS-f7e99f4b`  
**URL:** https://www.cdc.gov/monkeypox/signs-symptoms/index.html  
**XPath / selector:** `text: "Related Pages"`  
**WCAG SC:** 1.4.3 — Contrast (Minimum) (Level AA)  
**Rule:** Siteimprove Alfa — `sia-r69` ([reference](https://alfa.siteimprove.com/rules/sia-r69))  
**Severity:** Moderate  
**Frequency:** 1267 instances; 225 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Text has sufficient color contrast (Enhanced). Detected by Siteimprove Alfa rule sia-r69 on 225 of 1667 scanned pages (1267 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/monkeypox/signs-symptoms/index.html.
2. Locate the element: text: "Related Pages"
3. Confirm the Siteimprove Alfa finding for rule sia-r69 against WCAG 1.4.3 Contrast (Minimum).

### Impact
Affects Limited vision (2.4%), Without color perception (4.5%).
- **Limited vision** (2.4% of population)
- **Without color perception** (4.5% of population)

### Affected pages
- https://www.cdc.gov/monkeypox/signs-symptoms/index.html
- https://www.cdc.gov/group-a-strep/hcp/clinical-guidance/post-streptococcal-glomerulonephritis.html
- https://www.cdc.gov/yellow-book/hcp/contents/index.html
- http://www.cdc.gov/nchhstp/whats-new/recruitment-director-2026.html
- https://www.cdc.gov/vaccines/hcp/current-vis/hepatitis-b.html
- https://www.cdc.gov/west-nile-virus/signs-symptoms/index.html
- https://www.cdc.gov/steadi/hcp/clinical-resources/inpatient-care.html
- https://www.cdc.gov/sti/hcp/doxy-pep/index.html
- https://www.cdc.gov/yellow-book/hcp/family-travel/traveling-with-pets-and-service-animals.html
- https://www.cdc.gov/global-water-sanitation-hygiene/es/about/global-drinking-water.html
- https://www.cdc.gov/flu/php/surveillance/index.html
- https://www.cdc.gov/physical-activity/php/military-readiness/index.html
- https://www.cdc.gov/tobacco-health-equity/collection/anhpi.html
- https://www.cdc.gov/infection-control/hcp/sharps-safety
- https://www.cdc.gov/diabetes/es/about/acerca-de-la-cetoacidosis-diabetica.html
- https://www.cdc.gov/physical-activity/php/strategies/increasing-physical-activity-through-community-design-prevention-strategies.html
- https://www.cdc.gov/niosh/construction/falls-prevention-campaign/index.html
- https://www.cdc.gov/about/speakers/request-director.html
- https://www.cdc.gov/radiation-health/data-research/facts-stats/wearable-technology.html
- https://www.cdc.gov/monkeypox/hcp/infection-control/index.html
- https://www.cdc.gov/Vaping
- https://www.cdc.gov/learning-connection/php/about
- https://www.cdc.gov/restaurant-food-safety/php/practices/food-allergy-reactions.html
- https://www.cdc.gov/global-water-sanitation-hygiene/about/index.html
- https://www.cdc.gov/early-care/about/index.html

…and more — 225 pages total ([download CSV](csv/alfa__sia-r69.csv)).

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

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

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

### Example pages
- https://www.cdc.gov/monkeypox/signs-symptoms/index.html
- https://www.cdc.gov/group-a-strep/hcp/clinical-guidance/post-streptococcal-glomerulonephritis.html
- https://www.cdc.gov/yellow-book/hcp/contents/index.html

---

## Text has enhanced contrast (WCAG 1.4.6)

**Bug ID:** `VS-2e06278f`  
**Pattern ID:** `VS-646b1e0b`  
**URL:** https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html  
**XPath / selector:** `text: "
					Here's how you know
					"`  
**WCAG SC:** 1.4.6 — Contrast (Enhanced) (Level AAA)  
**Rule:** Siteimprove Alfa — `sia-r66` ([reference](https://alfa.siteimprove.com/rules/sia-r66))  
**Severity:** Moderate  
**Frequency:** 18185 instances; 538 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Text has enhanced contrast. Detected by Siteimprove Alfa rule sia-r66 on 538 of 1667 scanned pages (18185 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html.
2. Locate the element: text: "
					Here's how you know
					"
3. Confirm the Siteimprove Alfa finding for rule sia-r66 against WCAG 1.4.6 Contrast (Enhanced).

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html
- https://www.cdc.gov/flu/avianflu/index.htm
- https://www.cdc.gov/steadi/hcp/clinical-resources/index.html
- https://www.cdc.gov/monkeypox/signs-symptoms/index.html
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- https://www.cdc.gov/group-a-strep/hcp/clinical-guidance/post-streptococcal-glomerulonephritis.html
- https://www.cdc.gov/yellow-book/hcp/contents/index.html
- http://www.cdc.gov/nchhstp/whats-new/recruitment-director-2026.html
- https://www.cdc.gov/niosh/ocas/ocasirep.html
- https://www.cdc.gov/mmwr/volumes/72/wr/mm7219a5.htm?s_cid=mm7219a5_w
- https://www.cdc.gov/vaccines/hcp/current-vis/hepatitis-b.html
- https://www.cdc.gov/west-nile-virus/signs-symptoms/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a7.htm?s_cid=mm6010a7_w
- https://www.cdc.gov/steadi/hcp/clinical-resources/inpatient-care.html
- https://www.cdc.gov/flu-burden/php/data-vis-vac/index.html
- https://www.cdc.gov/sti/hcp/doxy-pep/index.html
- http://www.cdc.gov/pcd/issues/2011/nov/11_0018_es.htm
- https://www.cdc.gov/mmwr/volumes/73/wr/mm7344a2.htm?s_cid=mm7344a2_w
- https://www.cdc.gov/yellow-book/hcp/family-travel/traveling-with-pets-and-service-animals.html
- https://www.cdc.gov/global-water-sanitation-hygiene/es/about/global-drinking-water.html
- https://www.cdc.gov/flu/php/surveillance/index.html
- https://www.cdc.gov/trichomoniasis/about/index.html
- https://www.cdc.gov/physical-activity/php/military-readiness/index.html
- https://www.cdc.gov/tobacco-health-equity/collection/anhpi.html

…and more — 538 pages total ([download CSV](csv/alfa__sia-r66.csv)).

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

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

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

### Example pages
- https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html
- https://www.cdc.gov/flu/avianflu/index.htm
- https://www.cdc.gov/steadi/hcp/clinical-resources/index.html

---

## Text has minimum contrast ratio of 4.5:1 (WCAG 1.4.8)

**Bug ID:** `VS-0392e3ed`  
**Pattern ID:** `VS-2208081b`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm  
**XPath / selector:** `<p>`  
**WCAG SC:** 1.4.8 — Visual Presentation (Level AAA)  
**Rule:** Siteimprove Alfa — `sia-r73` ([reference](https://alfa.siteimprove.com/rules/sia-r73))  
**Severity:** Moderate  
**Frequency:** 61158 instances; 208 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Text has minimum contrast ratio of 4.5:1. Detected by Siteimprove Alfa rule sia-r73 on 208 of 1667 scanned pages (61158 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm.
2. Locate the element: <p>
3. Confirm the Siteimprove Alfa finding for rule sia-r73 against WCAG 1.4.8 Visual Presentation.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a7.htm?s_cid=mm6010a7_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm
- http://www.cdc.gov/pcd/issues/2011/nov/11_0018_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5714a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a2.htm?s_cid=mm5924a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050819.htm
- https://www.cdc.gov/pcd/issues/2021/20_0410.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0085_es.htm
- https://www.cdc.gov/pcd/issues/2019/19_0105.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00032050.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000840.htm
- https://www.cdc.gov/niosh/twh/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5745a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5716a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5921a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5033a5.htm
- https://www.cdc.gov/pcd/for_authors/visual_abstracts.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a5.htm?s_cid=mm6010a5_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5940md.htm?s_cid=mm5940md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6031a2.htm?s_cid=mm6031a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001229.htm

…and more — 208 pages total ([download CSV](csv/alfa__sia-r73.csv)).

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

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

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm

---

## Link is distinguishable without relying on color (WCAG 1.4.8)

**Bug ID:** `VS-3a515fe1`  
**Pattern ID:** `VS-fbf54eba`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm  
**XPath / selector:** `<p style="font-family: Arial, Helvetica, sans-serif; font-size: 8pt; color: #333333;">`  
**WCAG SC:** 1.4.8 — Visual Presentation (Level AAA)  
**Rule:** Siteimprove Alfa — `sia-r74` ([reference](https://alfa.siteimprove.com/rules/sia-r74))  
**Severity:** Moderate  
**Frequency:** 37544 instances; 206 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Link is distinguishable without relying on color. Detected by Siteimprove Alfa rule sia-r74 on 206 of 1667 scanned pages (37544 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm.
2. Locate the element: <p style="font-family: Arial, Helvetica, sans-serif; font-size: 8pt; color: #333333;">
3. Confirm the Siteimprove Alfa finding for rule sia-r74 against WCAG 1.4.8 Visual Presentation.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm
- http://www.cdc.gov/pcd/issues/2011/nov/11_0018_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5714a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a2.htm?s_cid=mm5924a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050819.htm
- https://www.cdc.gov/pcd/issues/2021/20_0410.htm
- https://www.cdc.gov/niosh/construction/falls-prevention-campaign/index.html
- https://www.cdc.gov/pcd/issues/2009/jan/08_0085_es.htm
- https://www.cdc.gov/about/speakers/request-director.html
- https://www.cdc.gov/pcd/issues/2019/19_0105.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00032050.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000840.htm
- https://www.cdc.gov/niosh/twh/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5745a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5716a4.htm
- https://www.cdc.gov/climate-health/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5921a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5033a5.htm
- https://www.cdc.gov/pcd/for_authors/visual_abstracts.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5940md.htm?s_cid=mm5940md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001229.htm

…and more — 206 pages total ([download CSV](csv/alfa__sia-r74.csv)).

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

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

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm

---

## Scrollable element is keyboard accessible (WCAG 1.4.8)

**Bug ID:** `VS-4f49de3f`  
**Pattern ID:** `VS-388b5438`  
**URL:** https://www.cdc.gov/pcd/issues/2009/jan/toc.htm  
**XPath / selector:** `<p class="deck">`  
**WCAG SC:** 1.4.8 — Visual Presentation (Level AAA)  
**Rule:** Siteimprove Alfa — `sia-r80` ([reference](https://alfa.siteimprove.com/rules/sia-r80))  
**Severity:** Moderate  
**Frequency:** 256 instances; 5 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Scrollable element is keyboard accessible. Detected by Siteimprove Alfa rule sia-r80 on 5 of 1667 scanned pages (256 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2009/jan/toc.htm.
2. Locate the element: <p class="deck">
3. Confirm the Siteimprove Alfa finding for rule sia-r80 against WCAG 1.4.8 Visual Presentation.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/pcd/issues/2009/jan/toc.htm
- https://www.cdc.gov/pcd/collections/Diabetes_Prevention.htm
- https://www.cdc.gov/pcd/issues/gis_toc.htm
- https://www.cdc.gov/pcd/issues/2017/2017_TOC.htm
- https://www.cdc.gov/pcd/collections/Spatial_Perspectives_2019.htm

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

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r80

### Example pages
- https://www.cdc.gov/pcd/issues/2009/jan/toc.htm
- https://www.cdc.gov/pcd/collections/Diabetes_Prevention.htm
- https://www.cdc.gov/pcd/issues/gis_toc.htm

---

## iframe element is not empty (WCAG 1.4.8)

**Bug ID:** `VS-769e9132`  
**Pattern ID:** `VS-48291402`  
**URL:** http://www.cdc.gov/pcd/issues/2009/jan/07_0022.htm  
**XPath / selector:** `<p style="text-align: justify">`  
**WCAG SC:** 1.4.8 — Visual Presentation (Level AAA)  
**Rule:** Siteimprove Alfa — `sia-r71` ([reference](https://alfa.siteimprove.com/rules/sia-r71))  
**Severity:** Moderate  
**Frequency:** 1 instances; 1 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### Description
iframe element is not empty. Detected by Siteimprove Alfa rule sia-r71 on 1 of 1667 scanned pages (1 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/pcd/issues/2009/jan/07_0022.htm.
2. Locate the element: <p style="text-align: justify">
3. Confirm the Siteimprove Alfa finding for rule sia-r71 against WCAG 1.4.8 Visual Presentation.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- http://www.cdc.gov/pcd/issues/2009/jan/07_0022.htm

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

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r71

---

## Target size is at least 44×44 CSS pixels (Enhanced) (WCAG 2.5.5)

**Bug ID:** `VS-9b1e1f35`  
**Pattern ID:** `VS-cb53cc4d`  
**URL:** https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html  
**XPath / selector:** `<button class="btn btn-outline-white btn-arrow-down btn-fancy" id="megaButton">`  
**WCAG SC:** 2.5.5 — Target Size (Enhanced) (Level AAA)  
**Rule:** Siteimprove Alfa — `sia-r111` ([reference](https://alfa.siteimprove.com/rules/sia-r111))  
**Severity:** Moderate  
**Frequency:** 20479 instances; 631 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Target size is at least 44×44 CSS pixels (Enhanced). Detected by Siteimprove Alfa rule sia-r111 on 631 of 1667 scanned pages (20479 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html.
2. Locate the element: <button class="btn btn-outline-white btn-arrow-down btn-fancy" id="megaButton">
3. Confirm the Siteimprove Alfa finding for rule sia-r111 against WCAG 2.5.5 Target Size (Enhanced).

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html
- https://www.cdc.gov/flu/avianflu/index.htm
- https://www.cdc.gov/steadi/hcp/clinical-resources/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/monkeypox/signs-symptoms/index.html
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- https://www.cdc.gov/group-a-strep/hcp/clinical-guidance/post-streptococcal-glomerulonephritis.html
- https://www.cdc.gov/yellow-book/hcp/contents/index.html
- http://www.cdc.gov/nchhstp/whats-new/recruitment-director-2026.html
- https://www.cdc.gov/niosh/ocas/ocasirep.html
- https://www.cdc.gov/mmwr/volumes/72/wr/mm7219a5.htm?s_cid=mm7219a5_w
- https://www.cdc.gov/vaccines/hcp/current-vis/hepatitis-b.html
- https://www.cdc.gov/west-nile-virus/signs-symptoms/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a7.htm?s_cid=mm6010a7_w
- https://www.cdc.gov/steadi/hcp/clinical-resources/inpatient-care.html
- https://www.cdc.gov/flu-burden/php/data-vis-vac/index.html
- https://www.cdc.gov/sti/hcp/doxy-pep/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm
- http://www.cdc.gov/pcd/issues/2011/nov/11_0018_es.htm
- https://www.cdc.gov/mmwr/volumes/73/wr/mm7344a2.htm?s_cid=mm7344a2_w
- https://www.cdc.gov/yellow-book/hcp/family-travel/traveling-with-pets-and-service-animals.html
- https://www.cdc.gov/global-water-sanitation-hygiene/es/about/global-drinking-water.html
- https://www.cdc.gov/flu/php/surveillance/index.html
- https://www.cdc.gov/trichomoniasis/about/index.html

…and more — 631 pages total ([download CSV](csv/alfa__sia-r111.csv)).

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

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

### Example pages
- https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html
- https://www.cdc.gov/flu/avianflu/index.htm
- https://www.cdc.gov/steadi/hcp/clinical-resources/index.html

---

## All page content should be contained by landmarks (WCAG criterion undetermined)

**Bug ID:** `VS-44ccbd9e`  
**Pattern ID:** `VS-f18df681`  
**URL:** https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html  
**XPath / selector:** `.cdc-site-gov-notice`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `region` ([reference](https://dequeuniversity.com/rules/axe/4.12/region?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 11558 instances; 1566 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

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

### Description
All page content should be contained by landmarks. Detected by axe-core rule region on 1566 of 1667 scanned pages (11558 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.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.

### Affected pages
- https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html
- https://www.cdc.gov/niosh/ocas/sandialmore.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm
- https://www.cdc.gov/listeria/causes/fruits-vegetables.html
- https://www.cdc.gov/mmwr/volumes/73/wr/mm7316a6.htm?s_cid=mm7316a6_w
- https://www.cdc.gov/nchs/updates
- https://www.cdc.gov/mmwr/volumes/71/wr/mm7134a2.htm?s_cid=mm7134a2_w
- https://www.cdc.gov/listeria/hcp/clinical-overview/index.html
- https://www.cdc.gov/niosh/learning/safetyculturehc/module-1/4.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5941md.htm?s_cid=mm5941md_w
- https://www.cdc.gov/flu/avianflu/index.htm
- https://www.cdc.gov/steadi/hcp/clinical-resources/index.html
- https://www.cdc.gov/mumps/php/public-health-strategy/index.html
- https://www.cdc.gov/pcd/issues/2025/24_0270.htm
- https://www.cdc.gov/pcd/issues/2005/jul/cover.htm
- https://www.cdc.gov/pcd/issues/2006/oct/memoriam.htm
- https://www.cdc.gov/swine-flu/about/influenza-in-swine.html
- https://www.cdc.gov/fungal/fungal-disease-awareness-week/index.html
- https://www.cdc.gov/malaria/php/public-health-strategy/drug-strategies.html
- https://www.cdc.gov/phin/php/phinms/index.html
- https://www.cdc.gov/pcd/issues/2019/19_0129.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/nchs/fastats/alzheimers.htm
- https://www.cdc.gov/monkeypox/signs-symptoms/index.html
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm

…and more — 1566 pages total ([download CSV](csv/axe-core__region.csv)).

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

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

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

### Example pages
- https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html
- https://www.cdc.gov/niosh/ocas/sandialmore.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm

---

## Form elements should have a visible label (WCAG criterion undetermined)

**Bug ID:** `VS-c8429280`  
**Pattern ID:** `VS-33841929`  
**URL:** https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm  
**XPath / selector:** `.smallfield`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `label-title-only` ([reference](https://dequeuniversity.com/rules/axe/4.12/label-title-only?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 76 instances; 76 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

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

### Description
Form elements should have a visible label. Detected by axe-core rule label-title-only on 76 of 1667 scanned pages (76 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm.
2. Locate the element: .smallfield
3. Confirm the axe-core finding for rule label-title-only.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- https://www.cdc.gov/pcd/issues/2011/nov/10_0191_es.htm
- http://www.cdc.gov/pcd/issues/2011/nov/11_0018_es.htm
- https://www.cdc.gov/pcd/issues/2011/nov/11_0043_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0085_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0020_zhs.htm
- https://www.cdc.gov/pcd/issues/2006/oct/05_0009_fr.htm
- https://www.cdc.gov/pcd/issues/2006/oct/05_0243.htm
- https://www.cdc.gov/pcd/issues/2005/nov/05_0071_zhs.htm
- http://www.cdc.gov/pcd/issues/2010/sep/09_0173_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0022_zhs.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0276_zhs.htm
- https://www.cdc.gov/pcd/issues/2005/nov/05_0073_fr.htm
- http://www.cdc.gov/pcd/issues/2008/oct/08_0057_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0264_zhs.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0022_zht.htm
- http://www.cdc.gov/pcd/issues/2009/jan/08_0085_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/06_0033_zhs.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0064.htm
- https://www.cdc.gov/pcd/issues/2005/nov/05_0070.htm
- https://www.cdc.gov/pcd/issues/2008/oct/07_0164_fr.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0168_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0026.htm
- https://www.cdc.gov/pcd/issues/2011/nov/11_0006.htm

…and more — 76 pages total ([download CSV](csv/axe-core__label-title-only.csv)).

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

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

### Example pages
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- https://www.cdc.gov/pcd/issues/2011/nov/10_0191_es.htm

---

## Heading levels should only increase by one (WCAG criterion undetermined)

**Bug ID:** `VS-c564af31`  
**Pattern ID:** `VS-d25f622d`  
**URL:** https://www.cdc.gov/niosh/ocas/sandialmore.html  
**XPath / selector:** `h3:nth-child(5)`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `heading-order` ([reference](https://dequeuniversity.com/rules/axe/4.12/heading-order?application=axeAPI))  
**Severity:** Moderate  
**Frequency:** 763 instances; 533 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<h3><a id="sec" class="onThisPageAnchor" title="Special Exposure Cohort" name="sec"></a> Special Exposure Cohort Petition Information</h3>
```

### Description
Heading levels should only increase by one. Detected by axe-core rule heading-order on 533 of 1667 scanned pages (763 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/niosh/ocas/sandialmore.html.
2. Locate the element: h3:nth-child(5)
3. Confirm the axe-core finding for rule heading-order.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/niosh/ocas/sandialmore.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm
- https://www.cdc.gov/mmwr/volumes/73/wr/mm7316a6.htm?s_cid=mm7316a6_w
- https://www.cdc.gov/mmwr/volumes/71/wr/mm7134a2.htm?s_cid=mm7134a2_w
- https://www.cdc.gov/niosh/learning/safetyculturehc/module-1/4.html
- https://www.cdc.gov/steadi/hcp/clinical-resources/index.html
- https://www.cdc.gov/pcd/issues/2025/24_0270.htm
- https://www.cdc.gov/pcd/issues/2019/19_0129.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- https://www.cdc.gov/pcd/issues/2011/nov/10_0191_es.htm
- https://www.cdc.gov/niosh/ocas/ocasirep.html
- https://www.cdc.gov/mmwr/volumes/72/wr/mm7219a5.htm?s_cid=mm7219a5_w
- https://www.cdc.gov/pcd/issues/2017/17_0170.htm
- https://www.cdc.gov/mmwr/volumes/74/wr/mm7401a3.htm?s_cid=mm7401a3_w
- https://www.cdc.gov/mmwr/volumes/72/wr/mm7223a5.htm?s_cid=mm7223a5_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm
- http://www.cdc.gov/pcd/issues/2011/nov/11_0018_es.htm
- https://www.cdc.gov/mmwr/volumes/73/wr/mm7344a2.htm?s_cid=mm7344a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000683.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00025213.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5714a5.htm
- https://www.cdc.gov/pcd/issues/2011/nov/11_0043_es.htm
- https://www.cdc.gov/pcd/issues/2025/24_0149.htm

…and more — 533 pages total ([download CSV](csv/axe-core__heading-order.csv)).

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

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

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

### Example pages
- https://www.cdc.gov/niosh/ocas/sandialmore.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm
- https://www.cdc.gov/mmwr/volumes/73/wr/mm7316a6.htm?s_cid=mm7316a6_w

---

## Landmarks should have a unique role or role/label/title (i.e. accessible name) c (WCAG criterion undetermined)

**Bug ID:** `VS-8c2d08cb`  
**Pattern ID:** `VS-8806389c`  
**URL:** https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html  
**XPath / selector:** `.page-right-rail__static`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `landmark-unique` ([reference](https://dequeuniversity.com/rules/axe/4.12/landmark-unique?application=axeAPI))  
**Severity:** Moderate  
**Frequency:** 533 instances; 528 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<aside class="page-right-rail__static noindex" role="complementary" style="margin-top: 92px;">
```

### Description
Landmarks should have a unique role or role/label/title (i.e. accessible name) c. Detected by axe-core rule landmark-unique on 528 of 1667 scanned pages (533 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html.
2. Locate the element: .page-right-rail__static
3. Confirm the axe-core finding for rule landmark-unique.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html
- https://www.cdc.gov/listeria/causes/fruits-vegetables.html
- https://www.cdc.gov/nchs/updates
- https://www.cdc.gov/listeria/hcp/clinical-overview/index.html
- https://www.cdc.gov/mumps/php/public-health-strategy/index.html
- https://www.cdc.gov/swine-flu/about/influenza-in-swine.html
- https://www.cdc.gov/malaria/php/public-health-strategy/drug-strategies.html
- https://www.cdc.gov/monkeypox/signs-symptoms/index.html
- https://www.cdc.gov/hepatitis-c/hcp/clinical-care/index.html
- https://www.cdc.gov/tobacco/tobacco-features/health-equity.html
- https://www.cdc.gov/group-a-strep/hcp/clinical-guidance/post-streptococcal-glomerulonephritis.html
- https://www.cdc.gov/niosh/training/default.html
- https://www.cdc.gov/vitamin-k-deficiency/es/about/acerca-de-los-sangrados-por-deficiencia-de-vitamina-k.html
- https://www.cdc.gov/flu/es/signs-symptoms/signos-y-sintomas-de-la-influenza.html
- https://www.cdc.gov/stem/php/college-and-professional/index.html
- https://www.cdc.gov/vaccines/hcp/current-vis/hepatitis-b.html
- https://www.cdc.gov/covid/vaccines/benefits.html
- https://www.cdc.gov/west-nile-virus/signs-symptoms/index.html
- https://www.cdc.gov/steadi/hcp/clinical-resources/inpatient-care.html
- https://www.cdc.gov/sti/hcp/doxy-pep/index.html
- https://www.cdc.gov/bmi/about/index.html
- https://www.cdc.gov/vitamin-k-deficiency/faq/index.html
- https://www.cdc.gov/yellow-book/hcp/family-travel/traveling-with-pets-and-service-animals.html
- https://www.cdc.gov/global-water-sanitation-hygiene/es/about/global-drinking-water.html
- https://www.cdc.gov/flu/php/surveillance/index.html

…and more — 528 pages total ([download CSV](csv/axe-core__landmark-unique.csv)).

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

### Suggested fix
**How to fix:** When a landmark role/type repeats (e.g. two <nav>s), give each a distinct accessible name with aria-label or aria-labelledby (e.g. "Primary" and "Footer" navigation) so screen-reader users can tell them apart.

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

### Example pages
- https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html
- https://www.cdc.gov/listeria/causes/fruits-vegetables.html
- https://www.cdc.gov/nchs/updates

---

## Document should have one main landmark (WCAG criterion undetermined)

**Bug ID:** `VS-68587385`  
**Pattern ID:** `VS-d5d82446`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm  
**XPath / selector:** `html`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `landmark-one-main` ([reference](https://dequeuniversity.com/rules/axe/4.12/landmark-one-main?application=axeAPI))  
**Severity:** Moderate  
**Frequency:** 361 instances; 361 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<html>
```

### Description
Document should have one main landmark. Detected by axe-core rule landmark-one-main on 361 of 1667 scanned pages (361 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm.
2. Locate the element: html
3. Confirm the axe-core finding for rule landmark-one-main.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5941md.htm?s_cid=mm5941md_w
- https://www.cdc.gov/pcd/issues/2005/jul/cover.htm
- https://www.cdc.gov/pcd/issues/2006/oct/memoriam.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- https://www.cdc.gov/pcd/issues/2011/nov/10_0191_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a7.htm?s_cid=mm6010a7_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm
- http://www.cdc.gov/pcd/issues/2011/nov/11_0018_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000683.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00025213.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5714a5.htm
- https://www.cdc.gov/pcd/issues/2011/nov/11_0043_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00046564.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5950a3.htm?s_cid=mm5950a3_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a2.htm?s_cid=mm5924a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050819.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023565.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0085_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00048778.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5913md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000782.htm

…and more — 361 pages total ([download CSV](csv/axe-core__landmark-one-main.csv)).

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

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

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

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026201.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5941md.htm?s_cid=mm5941md_w
- https://www.cdc.gov/pcd/issues/2005/jul/cover.htm

---

## Page should contain a level-one heading (WCAG criterion undetermined)

**Bug ID:** `VS-eb968dcc`  
**Pattern ID:** `VS-fa44f293`  
**URL:** https://www.cdc.gov/flu/avianflu/index.htm  
**XPath / selector:** `html`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `page-has-heading-one` ([reference](https://dequeuniversity.com/rules/axe/4.12/page-has-heading-one?application=axeAPI))  
**Severity:** Moderate  
**Frequency:** 85 instances; 85 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

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

### Description
Page should contain a level-one heading. Detected by axe-core rule page-has-heading-one on 85 of 1667 scanned pages (85 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/flu/avianflu/index.htm.
2. Locate the element: html
3. Confirm the axe-core finding for rule page-has-heading-one.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/flu/avianflu/index.htm
- https://www.cdc.gov/traumatic-brain-injury/site.html
- https://www.cdc.gov/aging-programs
- https://www.cdc.gov/grants/index.html
- https://www.cdc.gov/tb/hcp/index.html
- https://www.cdc.gov/ovarian-cancer/es/index.html
- https://www.cdc.gov/climate-health/index.html
- https://www.cdc.gov/parents
- https://www.cdc.gov/tb-surveillance-report-2023/index.html
- https://www.cdc.gov/shingles/es/la-culebrilla-herpes-zzoster.html
- https://www.cdc.gov/environmental-health-response-and-recovery/site.html
- https://www.cdc.gov/elearning-institute/es/site.html
- https://www.cdc.gov/spina-bifida
- https://www.cdc.gov/niosh/construction/site.html
- https://www.cdc.gov/chagas/site.html
- https://www.cdc.gov/lung-cancer/es/
- https://www.cdc.gov/niosh
- https://www.cdc.gov/aspergillosis/index.html
- https://www.cdc.gov/healthy-pets
- https://www.cdc.gov/suicide/site.html
- https://www.cdc.gov/elearning-institute/site.html
- https://www.cdc.gov/steadi
- https://www.cdc.gov/adultvaxview/index.html
- https://www.cdc.gov/intimate-partner-violence/site.html
- http://www.cdc.gov/std

…and more — 85 pages total ([download CSV](csv/axe-core__page-has-heading-one.csv)).

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

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

### Example pages
- https://www.cdc.gov/flu/avianflu/index.htm
- https://www.cdc.gov/traumatic-brain-injury/site.html
- https://www.cdc.gov/aging-programs

---

## scope attribute should be used correctly (WCAG criterion undetermined)

**Bug ID:** `VS-565fb4e8`  
**Pattern ID:** `VS-0ba8ce9d`  
**URL:** https://www.cdc.gov/mmwr/volumes/71/wr/mm7107e2.htm?s_cid=mm7107e2_w  
**XPath / selector:** `.w-100.order-4:nth-child(23) > table > tbody > tr:nth-child(1) > .row1[scope="col"][align="left"]`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `scope-attr-valid` ([reference](https://dequeuniversity.com/rules/axe/4.12/scope-attr-valid?application=axeAPI))  
**Severity:** Moderate  
**Frequency:** 128 instances; 8 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<td class="row1" scope="col" align="left" valign="top">All ED/UC encounters</td>
```

### Description
scope attribute should be used correctly. Detected by axe-core rule scope-attr-valid on 8 of 1667 scanned pages (128 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/volumes/71/wr/mm7107e2.htm?s_cid=mm7107e2_w.
2. Locate the element: .w-100.order-4:nth-child(23) > table > tbody > tr:nth-child(1) > .row1[scope="col"][align="left"]
3. Confirm the axe-core finding for rule scope-attr-valid.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/mmwr/volumes/71/wr/mm7107e2.htm?s_cid=mm7107e2_w
- https://www.cdc.gov/pcd/issues/2019/19_0163.htm
- https://www.cdc.gov/tobacco/campaign/tips/spanish/acerca/Carga-del-consumo-de-tabaco-en-los-Estados-Unidos.html
- https://www.cdc.gov/fluview/surveillance/2026-week-08.html
- https://www.cdc.gov/pcd/issues/2019/18_0540.htm
- https://www.cdc.gov/flu/es/about/acerca-de-la-influenza.html
- https://www.cdc.gov/healthcare-associated-infections/php/preventing-mdros/mdro-containment-strategy.html
- https://www.cdc.gov/pcd/issues/2017/16_0381.htm

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

### Suggested fix
See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/scope-attr-valid?application=axeAPI

### Example pages
- https://www.cdc.gov/mmwr/volumes/71/wr/mm7107e2.htm?s_cid=mm7107e2_w
- https://www.cdc.gov/pcd/issues/2019/19_0163.htm
- https://www.cdc.gov/tobacco/campaign/tips/spanish/acerca/Carga-del-consumo-de-tabaco-en-los-Estados-Unidos.html

---

## The skip-link target should exist and be focusable (WCAG criterion undetermined)

**Bug ID:** `VS-cc52a490`  
**Pattern ID:** `VS-4edfe386`  
**URL:** https://www.cdc.gov/pcd/es/2014_toc.htm  
**XPath / selector:** `a[href$="#az"]`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `skip-link` ([reference](https://dequeuniversity.com/rules/axe/4.12/skip-link?application=axeAPI))  
**Severity:** Moderate  
**Frequency:** 2 instances; 2 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<a href="#az" class="skippy" title="Salte directo al listado de A-Z">Salte directo al listado de A-Z</a>
```

### Description
The skip-link target should exist and be focusable. Detected by axe-core rule skip-link on 2 of 1667 scanned pages (2 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/es/2014_toc.htm.
2. Locate the element: a[href$="#az"]
3. Confirm the axe-core finding for rule skip-link.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/pcd/es/2014_toc.htm
- https://www.cdc.gov/pcd/es/archive_es.htm

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

### Suggested fix
**How to fix:** 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

### Example pages
- https://www.cdc.gov/pcd/es/2014_toc.htm
- https://www.cdc.gov/pcd/es/archive_es.htm

---

## Table header text should not be empty (WCAG criterion undetermined)

**Bug ID:** `VS-c8c39ad2`  
**Pattern ID:** `VS-d69fc059`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5941md.htm?s_cid=mm5941md_w  
**XPath / selector:** `.story:nth-child(18) > table > tbody > tr:nth-child(2) > .col-head:nth-child(1)`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `empty-table-header` ([reference](https://dequeuniversity.com/rules/axe/4.12/empty-table-header?application=axeAPI))  
**Severity:** Minor  
**Frequency:** 143 instances; 28 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<th class="col-head" scope="col">
							</th>
```

### Description
Table header text should not be empty. Detected by axe-core rule empty-table-header on 28 of 1667 scanned pages (143 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5941md.htm?s_cid=mm5941md_w.
2. Locate the element: .story:nth-child(18) > table > tbody > tr:nth-child(2) > .col-head:nth-child(1)
3. Confirm the axe-core finding for rule empty-table-header.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5941md.htm?s_cid=mm5941md_w
- https://www.cdc.gov/mumps/php/public-health-strategy/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a2.htm?s_cid=mm5924a2_w
- https://www.cdc.gov/physical-activity/php/strategies/increasing-physical-activity-through-community-design-prevention-strategies.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5913md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5940md.htm?s_cid=mm5940md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5916md.htm
- https://www.cdc.gov/fluview/surveillance/2026-week-08.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5910md.htm
- https://www.cdc.gov/pcd/issues/2005/nov/05_0070.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6001md.htm?s_cid=mm6001md_w
- https://www.cdc.gov/pcd/issues/2005/nov/05_0081.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6008a3.htm?s_cid=mm6008a3_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5930a1.htm?s_cid=mm5930a1_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5827a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a3.htm?s_cid=mm5924a3_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5906a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5922md.htm?s_cid=mm5922md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6042md.htm?s_cid=mm6042md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5909md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6008md.htm?s_cid=mm6008md_w
- https://www.cdc.gov/dpdx/diagnosticProcedures/stool/morphcomp.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5911a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5917md.htm
- https://www.cdc.gov/high-blood-pressure/php/toolkit/index.html

…and more — 28 pages total ([download CSV](csv/axe-core__empty-table-header.csv)).

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

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

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5941md.htm?s_cid=mm5941md_w
- https://www.cdc.gov/mumps/php/public-health-strategy/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a2.htm?s_cid=mm5924a2_w

---

## Headings should not be empty (WCAG criterion undetermined)

**Bug ID:** `VS-1901ff21`  
**Pattern ID:** `VS-0066c67d`  
**URL:** https://www.cdc.gov/mmwr/volumes/73/wr/mm7308a3.htm?s_cid=mm7308a3_w  
**XPath / selector:** `.card-body > h5:nth-child(2)`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `empty-heading` ([reference](https://dequeuniversity.com/rules/axe/4.12/empty-heading?application=axeAPI))  
**Severity:** Minor  
**Frequency:** 9 instances; 8 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<h5><br></h5>
```

### Description
Headings should not be empty. Detected by axe-core rule empty-heading on 8 of 1667 scanned pages (9 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/volumes/73/wr/mm7308a3.htm?s_cid=mm7308a3_w.
2. Locate the element: .card-body > h5:nth-child(2)
3. Confirm the axe-core finding for rule empty-heading.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/mmwr/volumes/73/wr/mm7308a3.htm?s_cid=mm7308a3_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5125a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5712a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr4901a2.htm
- https://www.cdc.gov/growthcharts
- https://www.cdc.gov/nchs/products/databriefs/db453.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5153a1.htm
- https://www.cdc.gov/niosh/idlh

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

### Suggested fix
**How to fix:** Remove 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

### Example pages
- https://www.cdc.gov/mmwr/volumes/73/wr/mm7308a3.htm?s_cid=mm7308a3_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5125a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5712a5.htm

---

## ARIA role should be appropriate for the element (WCAG criterion undetermined)

**Bug ID:** `VS-0b5ef49d`  
**Pattern ID:** `VS-4fac2f41`  
**URL:** https://www.cdc.gov/vitalsigns/vaccines-for-children/index.html  
**XPath / selector:** `.d-xxl-none.d-xl-block.cdc-viewports:nth-child(3) > .ds-8.card-btn[href$="#challenge"] > .card-p-right.bg-white.card-body > .align-items-center.row > .card-body-left.col > .vs-resize > img[alt="shield icon"][role="presentation"][decoding="async"]`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `aria-allowed-role` ([reference](https://dequeuniversity.com/rules/axe/4.12/aria-allowed-role?application=axeAPI))  
**Severity:** Minor  
**Frequency:** 6 instances; 3 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<img decoding="async" class="img-fluid" alt="shield icon" role="presentation" src="/vitalsigns/vaccines-for-children/images/shield-icon.png?_=22697">
```

### Description
ARIA role should be appropriate for the element. Detected by axe-core rule aria-allowed-role on 3 of 1667 scanned pages (6 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/vitalsigns/vaccines-for-children/index.html.
2. Locate the element: .d-xxl-none.d-xl-block.cdc-viewports:nth-child(3) > .ds-8.card-btn[href$="#challenge"] > .card-p-right.bg-white.card-body > .align-items-center.row > .card-body-left.col > .vs-resize > img[alt="shield icon"][role="presentation"][decoding="async"]
3. Confirm the axe-core finding for rule aria-allowed-role.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/vitalsigns/vaccines-for-children/index.html
- http://www.cdc.gov/vitalsigns/global-hiv/index.html
- https://www.cdc.gov/tb/php/laboratory/mddr-form/index.html

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

### Suggested fix
**How to fix:** 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

### Example pages
- https://www.cdc.gov/vitalsigns/vaccines-for-children/index.html
- http://www.cdc.gov/vitalsigns/global-hiv/index.html
- https://www.cdc.gov/tb/php/laboratory/mddr-form/index.html

---

## Tables should not have the same summary and caption (WCAG criterion undetermined)

**Bug ID:** `VS-7b4b7787`  
**Pattern ID:** `VS-234b2c77`  
**URL:** https://www.cdc.gov/nchs/data-visualization/index.htm  
**XPath / selector:** `table[aria-labelledby="natality_data_dashboard_label"]`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `table-duplicate-name` ([reference](https://dequeuniversity.com/rules/axe/4.12/table-duplicate-name?application=axeAPI))  
**Severity:** Minor  
**Frequency:** 5 instances; 2 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### HTML snippet
```html
<table aria-labelledby="natality_data_dashboard_label" summary="Natality Data Dashboards" class="tabletabs table">
```

### Description
Tables should not have the same summary and caption. Detected by axe-core rule table-duplicate-name on 2 of 1667 scanned pages (5 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/nchs/data-visualization/index.htm.
2. Locate the element: table[aria-labelledby="natality_data_dashboard_label"]
3. Confirm the axe-core finding for rule table-duplicate-name.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/nchs/data-visualization/index.htm
- https://www.cdc.gov/nssp/php/onboarding-resources/implementation-guides.html

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

### Suggested fix
See remediation guidance: https://dequeuniversity.com/rules/axe/4.12/table-duplicate-name?application=axeAPI

### Example pages
- https://www.cdc.gov/nchs/data-visualization/index.htm
- https://www.cdc.gov/nssp/php/onboarding-resources/implementation-guides.html

---

## Alternative text of images should not be repeated as text (WCAG criterion undetermined)

**Bug ID:** `VS-a831fb1e`  
**Pattern ID:** `VS-f528778d`  
**URL:** http://www.cdc.gov/nchs/hus.htm  
**XPath / selector:** `img[alt="Deaths"]`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `image-redundant-alt` ([reference](https://dequeuniversity.com/rules/axe/4.12/image-redundant-alt?application=axeAPI))  
**Severity:** Minor  
**Frequency:** 6 instances; 1 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<img decoding="async" src="/nchs/images/hus/homepage-tiles/Deaths-800x500.png?_=27807" alt="Deaths" class="card-img-top img-fluid p-0 bg-gray-l2">
```

### Description
Alternative text of images should not be repeated as text. Detected by axe-core rule image-redundant-alt on 1 of 1667 scanned pages (6 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/nchs/hus.htm.
2. Locate the element: img[alt="Deaths"]
3. Confirm the axe-core finding for rule image-redundant-alt.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- http://www.cdc.gov/nchs/hus.htm

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

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

---

## Scrolling content can be accessed by keyboard (WCAG criterion undetermined)

**Bug ID:** `VS-3ff2aeff`  
**Pattern ID:** `VS-c18be945`  
**URL:** https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html  
**XPath / selector:** `text: "Skip directly to search"`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r57` ([reference](https://alfa.siteimprove.com/rules/sia-r57))  
**Severity:** Moderate  
**Frequency:** 7222 instances; 467 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Scrolling content can be accessed by keyboard. Detected by Siteimprove Alfa rule sia-r57 on 467 of 1667 scanned pages (7222 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html.
2. Locate the element: text: "Skip directly to search"
3. Confirm the Siteimprove Alfa finding for rule sia-r57.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html
- https://www.cdc.gov/flu/avianflu/index.htm
- https://www.cdc.gov/steadi/hcp/clinical-resources/index.html
- https://www.cdc.gov/monkeypox/signs-symptoms/index.html
- https://www.cdc.gov/group-a-strep/hcp/clinical-guidance/post-streptococcal-glomerulonephritis.html
- https://www.cdc.gov/yellow-book/hcp/contents/index.html
- http://www.cdc.gov/nchhstp/whats-new/recruitment-director-2026.html
- https://www.cdc.gov/niosh/ocas/ocasirep.html
- https://www.cdc.gov/mmwr/volumes/72/wr/mm7219a5.htm?s_cid=mm7219a5_w
- https://www.cdc.gov/vaccines/hcp/current-vis/hepatitis-b.html
- https://www.cdc.gov/west-nile-virus/signs-symptoms/index.html
- https://www.cdc.gov/steadi/hcp/clinical-resources/inpatient-care.html
- https://www.cdc.gov/flu-burden/php/data-vis-vac/index.html
- https://www.cdc.gov/sti/hcp/doxy-pep/index.html
- https://www.cdc.gov/mmwr/volumes/73/wr/mm7344a2.htm?s_cid=mm7344a2_w
- https://www.cdc.gov/yellow-book/hcp/family-travel/traveling-with-pets-and-service-animals.html
- https://www.cdc.gov/global-water-sanitation-hygiene/es/about/global-drinking-water.html
- https://www.cdc.gov/flu/php/surveillance/index.html
- https://www.cdc.gov/trichomoniasis/about/index.html
- https://www.cdc.gov/physical-activity/php/military-readiness/index.html
- https://www.cdc.gov/tobacco-health-equity/collection/anhpi.html
- https://www.cdc.gov/niosh/learning/safetyculturehc/module-4/11.html
- https://www.cdc.gov/infection-control/hcp/sharps-safety
- https://www.cdc.gov/diabetes/es/about/acerca-de-la-cetoacidosis-diabetica.html
- https://www.cdc.gov/physical-activity/php/strategies/increasing-physical-activity-through-community-design-prevention-strategies.html

…and more — 467 pages total ([download CSV](csv/alfa__sia-r57.csv)).

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

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

### Example pages
- https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html
- https://www.cdc.gov/flu/avianflu/index.htm
- https://www.cdc.gov/steadi/hcp/clinical-resources/index.html

---

## aria attribute is permitted for element role (WCAG criterion undetermined)

**Bug ID:** `VS-7fc23d96`  
**Pattern ID:** `VS-e05344b9`  
**URL:** https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html  
**XPath / selector:** `@aria-label="Official website of the United States government"`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r18` ([reference](https://alfa.siteimprove.com/rules/sia-r18))  
**Severity:** Moderate  
**Frequency:** 334 instances; 311 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
aria attribute is permitted for element role. Detected by Siteimprove Alfa rule sia-r18 on 311 of 1667 scanned pages (334 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html.
2. Locate the element: @aria-label="Official website of the United States government"
3. Confirm the Siteimprove Alfa finding for rule sia-r18.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html
- https://www.cdc.gov/flu/avianflu/index.htm
- https://www.cdc.gov/steadi/hcp/clinical-resources/index.html
- https://www.cdc.gov/monkeypox/signs-symptoms/index.html
- https://www.cdc.gov/group-a-strep/hcp/clinical-guidance/post-streptococcal-glomerulonephritis.html
- https://www.cdc.gov/yellow-book/hcp/contents/index.html
- http://www.cdc.gov/nchhstp/whats-new/recruitment-director-2026.html
- https://www.cdc.gov/vaccines/hcp/current-vis/hepatitis-b.html
- https://www.cdc.gov/west-nile-virus/signs-symptoms/index.html
- https://www.cdc.gov/steadi/hcp/clinical-resources/inpatient-care.html
- https://www.cdc.gov/flu-burden/php/data-vis-vac/index.html
- https://www.cdc.gov/sti/hcp/doxy-pep/index.html
- https://www.cdc.gov/yellow-book/hcp/family-travel/traveling-with-pets-and-service-animals.html
- https://www.cdc.gov/global-water-sanitation-hygiene/es/about/global-drinking-water.html
- https://www.cdc.gov/flu/php/surveillance/index.html
- https://www.cdc.gov/trichomoniasis/about/index.html
- https://www.cdc.gov/physical-activity/php/military-readiness/index.html
- https://www.cdc.gov/tobacco-health-equity/collection/anhpi.html
- https://www.cdc.gov/infection-control/hcp/sharps-safety
- https://www.cdc.gov/diabetes/es/about/acerca-de-la-cetoacidosis-diabetica.html
- https://www.cdc.gov/physical-activity/php/strategies/increasing-physical-activity-through-community-design-prevention-strategies.html
- https://www.cdc.gov/hymenolepis/about
- https://www.cdc.gov/niosh/construction/falls-prevention-campaign/index.html
- https://www.cdc.gov/about/speakers/request-director.html
- https://www.cdc.gov/global-health/leadership/index.html

…and more — 311 pages total ([download CSV](csv/alfa__sia-r18.csv)).

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

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

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

### Example pages
- https://www.cdc.gov/disability-and-health-partners/php/healthy-communities/stories-about-reaching-people.html
- https://www.cdc.gov/flu/avianflu/index.htm
- https://www.cdc.gov/steadi/hcp/clinical-resources/index.html

---

## Headings are structured hierarchically (WCAG criterion undetermined)

**Bug ID:** `VS-6808c929`  
**Pattern ID:** `VS-f054f4a4`  
**URL:** https://www.cdc.gov/steadi/hcp/clinical-resources/index.html  
**XPath / selector:** `<h4 id="heading-xi5lbpcyef">`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r53` ([reference](https://alfa.siteimprove.com/rules/sia-r53))  
**Severity:** Moderate  
**Frequency:** 340 instances; 235 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Headings are structured hierarchically. Detected by Siteimprove Alfa rule sia-r53 on 235 of 1667 scanned pages (340 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/steadi/hcp/clinical-resources/index.html.
2. Locate the element: <h4 id="heading-xi5lbpcyef">
3. Confirm the Siteimprove Alfa finding for rule sia-r53.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/steadi/hcp/clinical-resources/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- https://www.cdc.gov/niosh/ocas/ocasirep.html
- https://www.cdc.gov/mmwr/volumes/72/wr/mm7219a5.htm?s_cid=mm7219a5_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm
- http://www.cdc.gov/pcd/issues/2011/nov/11_0018_es.htm
- https://www.cdc.gov/mmwr/volumes/73/wr/mm7344a2.htm?s_cid=mm7344a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5714a5.htm
- https://www.cdc.gov/niosh/learning/safetyculturehc/module-4/11.html
- https://www.cdc.gov/mmwr/volumes/72/wr/mm7246a3.htm?s_cid=mm7246a3_w
- https://www.cdc.gov/pcd/issues/2021/20_0410.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0085_es.htm
- https://www.cdc.gov/pcd/issues/2019/19_0105.htm
- https://www.cdc.gov/mmwr/volumes/72/wr/mm7234a5.htm?s_cid=mm7234a5_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00032050.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5745a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5716a4.htm
- https://www.cdc.gov/mmwr/volumes/74/wr/mm7435a2.htm?s_cid=OS_mm7435a2_w
- https://www.cdc.gov/spanish/az/m.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5033a5.htm
- https://www.cdc.gov/pcd/for_authors/visual_abstracts.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001229.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5114a2.htm

…and more — 235 pages total ([download CSV](csv/alfa__sia-r53.csv)).

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

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

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

### Example pages
- https://www.cdc.gov/steadi/hcp/clinical-resources/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm

---

## No obsolete or deprecated elements are used (WCAG criterion undetermined)

**Bug ID:** `VS-789d6f54`  
**Pattern ID:** `VS-3d033717`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm  
**XPath / selector:** `{"type":"document","children":[{"type":"element","children":[{"type":"element","`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r70` ([reference](https://alfa.siteimprove.com/rules/sia-r70))  
**Severity:** Moderate  
**Frequency:** 163 instances; 163 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
No obsolete or deprecated elements are used. Detected by Siteimprove Alfa rule sia-r70 on 163 of 1667 scanned pages (163 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm.
2. Locate the element: {"type":"document","children":[{"type":"element","children":[{"type":"element","
3. Confirm the Siteimprove Alfa finding for rule sia-r70.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a7.htm?s_cid=mm6010a7_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm
- http://www.cdc.gov/pcd/issues/2011/nov/11_0018_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5714a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a2.htm?s_cid=mm5924a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050819.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0085_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00032050.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000840.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5745a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5716a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5921a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5033a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a5.htm?s_cid=mm6010a5_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5940md.htm?s_cid=mm5940md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6031a2.htm?s_cid=mm6031a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001229.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5916md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5114a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000757.htm
- https://www.cdc.gov/pcd/issues/2006/oct/05_0009_fr.htm

…and more — 163 pages total ([download CSV](csv/alfa__sia-r70.csv)).

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

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

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000686.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0262_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0192.htm

---

## Presentational attribute (use CSS) (WCAG criterion undetermined)

**Bug ID:** `VS-88fec58a`  
**Pattern ID:** `VS-04a9d28c`  
**URL:** https://www.cdc.gov/mmwr/volumes/71/wr/mm7134a2.htm?s_cid=mm7134a2_w  
**XPath / selector:** `th`  
**WCAG SC:** _undetermined_  
**Rule:** deprecated-html — `presentational-attr`  
**Severity:** Moderate  
**Frequency:** 42730 instances; 151 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<th class="row1left" scope="col" align="left" valign="bottom">Characteristic</th>
```

### Description
Presentational attribute (use CSS). Detected by deprecated-html rule presentational-attr on 151 of 1667 scanned pages (42730 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/volumes/71/wr/mm7134a2.htm?s_cid=mm7134a2_w.
2. Locate the element: th
3. Confirm the deprecated-html finding for rule presentational-attr.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/mmwr/volumes/71/wr/mm7134a2.htm?s_cid=mm7134a2_w
- https://www.cdc.gov/pcd/issues/2025/24_0270.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00025213.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a2.htm?s_cid=mm5924a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023565.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00048778.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001301.htm
- https://www.cdc.gov/pcd/issues/2010/sep/cover.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000840.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5745a4.htm
- https://www.cdc.gov/mmwr/volumes/71/wr/mm7107e2.htm?s_cid=mm7107e2_w
- https://www.cdc.gov/pcd/issues/2026/25_0288.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5921a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000730.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000757.htm
- https://www.cdc.gov/pcd/issues/2025/25_0186.htm
- https://www.cdc.gov/pcd/issues/2025/25_0083.htm
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6603a7.htm
- https://www.cdc.gov/mmwr/volumes/71/wr/mm7140a4.htm?s_cid=mm7140a4_w
- https://www.cdc.gov/mmwr/volumes/71/wr/mm7118a4.htm?s_cid=mm7118a4_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001922.htm
- https://www.cdc.gov/mmwr/volumes/74/wr/mm7412a4.htm?s_cid=mm7412a4_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00031959.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001313.htm

…and more — 151 pages total ([download CSV](csv/deprecated-html__presentational-attr.csv)).

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

### Suggested fix
Not captured by automated scan — requires manual testing.

### Example pages
- https://www.cdc.gov/mmwr/volumes/71/wr/mm7134a2.htm?s_cid=mm7134a2_w
- https://www.cdc.gov/pcd/issues/2025/24_0270.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00025213.htm

---

## Obsolete <font> element (use CSS) (WCAG criterion undetermined)

**Bug ID:** `VS-d08cec46`  
**Pattern ID:** `VS-91d2294a`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00025213.htm  
**XPath / selector:** `font`  
**WCAG SC:** _undetermined_  
**Rule:** deprecated-html — `font-element`  
**Severity:** Moderate  
**Frequency:** 822 instances; 99 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

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

### Description
Obsolete <font> element (use CSS). Detected by deprecated-html rule font-element on 99 of 1667 scanned pages (822 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00025213.htm.
2. Locate the element: font
3. Confirm the deprecated-html finding for rule font-element.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00025213.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a2.htm?s_cid=mm5924a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023565.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00048778.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001301.htm
- https://www.cdc.gov/pcd/issues/2010/sep/cover.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000840.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5745a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5921a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6008a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000730.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000757.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001922.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00031959.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5935a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001313.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5910md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5703a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026747.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5948a5.htm?s_cid=mm5948a5_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00049041.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a4.htm
- http://www.cdc.gov/pcd/issues/2008/oct/08_0057_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5125a1.htm

…and more — 99 pages total ([download CSV](csv/deprecated-html__font-element.csv)).

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

### Suggested fix
Not captured by automated scan — requires manual testing.

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00025213.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a2.htm?s_cid=mm5924a2_w

---

## Obsolete <big> element (use CSS) (WCAG criterion undetermined)

**Bug ID:** `VS-f6582ccb`  
**Pattern ID:** `VS-7845739d`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00025213.htm  
**XPath / selector:** `big`  
**WCAG SC:** _undetermined_  
**Rule:** deprecated-html — `big-element`  
**Severity:** Moderate  
**Frequency:** 99 instances; 62 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<big><strong>Note:</strong></big>
```

### Description
Obsolete <big> element (use CSS). Detected by deprecated-html rule big-element on 62 of 1667 scanned pages (99 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00025213.htm.
2. Locate the element: big
3. Confirm the deprecated-html finding for rule big-element.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00025213.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023565.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00048778.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001301.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000840.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000730.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000757.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001922.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00031959.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001313.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5703a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026747.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00049041.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5125a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000663.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5536a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00048364.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000836.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015759.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00048515.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00049839.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050266.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023631.htm

…and more — 62 pages total ([download CSV](csv/deprecated-html__big-element.csv)).

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

### Suggested fix
Not captured by automated scan — requires manual testing.

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00025213.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023565.htm

---

## Form field label is visible (WCAG criterion undetermined)

**Bug ID:** `VS-551b35ea`  
**Pattern ID:** `VS-7118fead`  
**URL:** https://www.cdc.gov/flu/avianflu/index.htm  
**XPath / selector:** `{"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r61` ([reference](https://alfa.siteimprove.com/rules/sia-r61))  
**Severity:** Moderate  
**Frequency:** 55 instances; 55 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Form field label is visible. Detected by Siteimprove Alfa rule sia-r61 on 55 of 1667 scanned pages (55 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/flu/avianflu/index.htm.
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.

### Affected pages
- https://www.cdc.gov/flu/avianflu/index.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a7.htm?s_cid=mm6010a7_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a2.htm?s_cid=mm5924a2_w
- https://www.cdc.gov/climate-health/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5921a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a5.htm?s_cid=mm6010a5_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5940md.htm?s_cid=mm5940md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6031a2.htm?s_cid=mm6031a2_w
- https://www.cdc.gov/parents
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5916md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6011a3.htm?s_cid=mm6011a3_w
- https://www.cdc.gov/spina-bifida
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5935a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a4.htm?s_cid=mm6010a4_w
- https://www.cdc.gov/chagas/site.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5936a1.htm?s_cid=mm5936a1_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5922a4.htm?s_cid=mm5922a4_w
- https://www.cdc.gov/steadi
- https://www.cdc.gov/intimate-partner-violence/site.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5906a2.htm
- https://www.cdc.gov/schoolvaxview
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6008a7.htm?s_cid=mm6008a7_w
- https://www.cdc.gov/nchs/npals/site.html
- https://www.cdc.gov/vitalsigns/vaccines-for-children/index.html
- https://www.cdc.gov/west-nile-virus

…and more — 55 pages total ([download CSV](csv/alfa__sia-r61.csv)).

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

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

### Example pages
- https://www.cdc.gov/flu/avianflu/index.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6010a7.htm?s_cid=mm6010a7_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a2.htm?s_cid=mm5924a2_w

---

## Table header has scope (WCAG criterion undetermined)

**Bug ID:** `VS-eadf83a7`  
**Pattern ID:** `VS-2cd767ca`  
**URL:** https://www.cdc.gov/west-nile-virus/signs-symptoms/index.html  
**XPath / selector:** `<h3 id="heading-1hasrslxsq">`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r78` ([reference](https://alfa.siteimprove.com/rules/sia-r78))  
**Severity:** Moderate  
**Frequency:** 34 instances; 29 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Table header has scope. Detected by Siteimprove Alfa rule sia-r78 on 29 of 1667 scanned pages (34 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/west-nile-virus/signs-symptoms/index.html.
2. Locate the element: <h3 id="heading-1hasrslxsq">
3. Confirm the Siteimprove Alfa finding for rule sia-r78.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/west-nile-virus/signs-symptoms/index.html
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6603a7.htm
- https://www.cdc.gov/hepatitis-surveillance-2023/hepatitis-c/index.html
- https://www.cdc.gov/fluview/surveillance/2026-week-08.html
- https://www.cdc.gov/niosh/face/topics/index.html
- https://www.cdc.gov/pcd/issues/2023/23_0061.htm
- https://www.cdc.gov/yellow-book/hcp/africa-middle-east/egypt.html
- https://www.cdc.gov/healthy-pets/about/ferrets.html
- https://www.cdc.gov/niosh/docket/archive/docket257.html
- https://www.cdc.gov/niosh/docs/2022-138
- https://www.cdc.gov/nchs/npals/site.html
- https://www.cdc.gov/fungal/health-equity/index.html
- https://www.cdc.gov/mmwr/volumes/69/wr/mm6932e3.htm?s_cid=mm6932e3_w
- https://www.cdc.gov/niosh/docket/archive/docket248b.html
- https://www.cdc.gov/scientific-integrity/site.html
- https://www.cdc.gov/mmwr/volumes/72/wr/mm7203a3.htm?s_cid=mm7203a3_w
- https://www.cdc.gov/flu/whats-new/22-23-summary-technical-report.html
- https://www.cdc.gov/yellow-book/hcp/environmental-hazards-risks/mosquitoes-ticks-and-other-arthropods.html
- https://www.cdc.gov/aging-programs/php/training/adph-curriculum.html
- https://www.cdc.gov/diabetes/diabetes-complications/diabetes-and-nerve-damage.html
- https://www.cdc.gov/niosh/docket/archive/docket005.html
- https://www.cdc.gov/niosh/docket/archive/docket099B.html
- https://www.cdc.gov/niosh/docket/archive/docket233c.html
- https://www.cdc.gov/niosh/docket/archive/docket220.html
- https://www.cdc.gov/mmwr/volumes/71/wr/mm7144a3.htm?s_cid=mm7144a3_w

…and more — 29 pages total ([download CSV](csv/alfa__sia-r78.csv)).

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

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

### Example pages
- https://www.cdc.gov/west-nile-virus/signs-symptoms/index.html
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6603a7.htm
- https://www.cdc.gov/hepatitis-surveillance-2023/hepatitis-c/index.html

---

## Obsolete <center> element (use CSS) (WCAG criterion undetermined)

**Bug ID:** `VS-11430bcc`  
**Pattern ID:** `VS-20060f39`  
**URL:** https://www.cdc.gov/pcd/issues/2010/sep/cover.htm  
**XPath / selector:** `center`  
**WCAG SC:** _undetermined_  
**Rule:** deprecated-html — `center-element`  
**Severity:** Moderate  
**Frequency:** 51 instances; 25 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### HTML snippet
```html
<center>
  <table border="0" width="140" cellspacing="0" cellpadding="0">
    
    <tbody><tr>
      <td width="140" bgcolor="#8A9683"><img border="0" src="www.cdc.gov/navimages/spacer.gif" width="140
```

### Description
Obsolete <center> element (use CSS). Detected by deprecated-html rule center-element on 25 of 1667 scanned pages (51 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2010/sep/cover.htm.
2. Locate the element: center
3. Confirm the deprecated-html finding for rule center-element.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/pcd/issues/2010/sep/cover.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0276_zhs.htm
- http://www.cdc.gov/pcd/issues/2008/oct/08_0057_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/toc.htm
- https://www.cdc.gov/pcd/issues/2005/nov/05_0070.htm
- https://www.cdc.gov/pcd/issues/2008/oct/07_0164_fr.htm
- https://www.cdc.gov/pcd/issues/2008/oct/07_0169_zht.htm
- https://www.cdc.gov/pcd/issues/2005/nov/05_0075_es.htm
- https://www.cdc.gov/pcd/issues/2010/jul/toc.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0263_zht.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0022_zht.htm
- https://www.cdc.gov/pcd/issues/2006/oct/06_0034.htm
- https://www.cdc.gov/pcd/issues/2011/nov/10_0221_es.htm
- https://www.cdc.gov/pcd/issues/2006/oct/05_0236_zht.htm
- https://www.cdc.gov/pcd/issues/2008/oct/07_0173.htm
- https://www.cdc.gov/pcd/issues/2011/nov/11_0006_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0018_zht.htm
- https://www.cdc.gov/pcd/issues/2006/oct/06_0010.htm
- https://www.cdc.gov/pcd/issues/2008/oct/08_0055.htm
- https://www.cdc.gov/pcd/issues/2011/nov/11_0029_es.htm
- https://www.cdc.gov/pcd/issues/2005/nov/05_0072.htm
- https://www.cdc.gov/pcd/issues/2011/nov/10_0230.htm
- http://www.cdc.gov/pcd/issues/2008/oct/07_0169_zht.htm
- https://www.cdc.gov/pcd/issues/2008/oct/08_0057.htm
- https://www.cdc.gov/pcd/issues/2008/oct/07_0163_es.htm

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

### Suggested fix
Not captured by automated scan — requires manual testing.

### Example pages
- https://www.cdc.gov/pcd/issues/2010/sep/cover.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0276_zhs.htm
- http://www.cdc.gov/pcd/issues/2008/oct/08_0057_es.htm

---

## Duplicate role landmark is labeled (WCAG criterion undetermined)

**Bug ID:** `VS-0a66aa81`  
**Pattern ID:** `VS-f2542d87`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm  
**XPath / selector:** `<pre>`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r79` ([reference](https://alfa.siteimprove.com/rules/sia-r79))  
**Severity:** Moderate  
**Frequency:** 49 instances; 22 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Duplicate role landmark is labeled. Detected by Siteimprove Alfa rule sia-r79 on 22 of 1667 scanned pages (49 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm.
2. Locate the element: <pre>
3. Confirm the Siteimprove Alfa finding for rule sia-r79.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050819.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00031959.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026747.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00032058.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00024921.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047135.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00049347.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00048515.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00049839.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00049687.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00046203.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00032844.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00049762.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026290.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00032336.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050010.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023577.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050128.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00041753.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00048570.htm

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

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r79

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023705.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00047030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050819.htm

---

## Tables are used for tabular data, not layout (WCAG criterion undetermined)

**Bug ID:** `VS-a65350cd`  
**Pattern ID:** `VS-3d3b2245`  
**URL:** https://www.cdc.gov/monkeypox/signs-symptoms/index.html  
**XPath / selector:** `<div class="cdc-slider cdc-slider--layout-small" id="DFESliderNh6QiJEBCJ" data-loop="true" data-responsive="{"0":"1","991":"2.34"}">`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r40` ([reference](https://alfa.siteimprove.com/rules/sia-r40))  
**Severity:** Moderate  
**Frequency:** 6 instances; 6 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Tables are used for tabular data, not layout. Detected by Siteimprove Alfa rule sia-r40 on 6 of 1667 scanned pages (6 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/monkeypox/signs-symptoms/index.html.
2. Locate the element: <div class="cdc-slider cdc-slider--layout-small" id="DFESliderNh6QiJEBCJ" data-loop="true" data-responsive="{"0":"1","991":"2.34"}">
3. Confirm the Siteimprove Alfa finding for rule sia-r40.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/monkeypox/signs-symptoms/index.html
- https://www.cdc.gov/dhds/about/index.html
- https://www.cdc.gov/bird-flu/h5-monitoring/index.html?CDC_AA_refVal=https%3A%2F%2Fwww.cdc.gov%2Fflu%2Favianflu%2Fh5-monitoring.html
- https://www.cdc.gov/mumps/outbreaks/index.html
- https://www.cdc.gov/global-health/countries/drc.html
- https://www.cdc.gov/healthcare-associated-infections/programs

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

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r40

### Example pages
- https://www.cdc.gov/monkeypox/signs-symptoms/index.html
- https://www.cdc.gov/dhds/about/index.html
- https://www.cdc.gov/bird-flu/h5-monitoring/index.html?CDC_AA_refVal=https%3A%2F%2Fwww.cdc.gov%2Fflu%2Favianflu%2Fh5-monitoring.html

---

## Input purpose can be determined (WCAG criterion undetermined)

**Bug ID:** `VS-e0cb63bb`  
**Pattern ID:** `VS-3fb891c5`  
**URL:** https://www.cdc.gov/about/speakers/request-director.html  
**XPath / selector:** `<fieldset class="fieldset--checkbox-group">`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r60` ([reference](https://alfa.siteimprove.com/rules/sia-r60))  
**Severity:** Moderate  
**Frequency:** 11 instances; 5 of 1667 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W25 (2 weeks)

### Description
Input purpose can be determined. Detected by Siteimprove Alfa rule sia-r60 on 5 of 1667 scanned pages (11 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/about/speakers/request-director.html.
2. Locate the element: <fieldset class="fieldset--checkbox-group">
3. Confirm the Siteimprove Alfa finding for rule sia-r60.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/about/speakers/request-director.html
- https://www.cdc.gov/mmwr/index2008.html
- https://www.cdc.gov/tribal-health/data-research/datarequest.html
- https://www.cdc.gov/spanish/cdc/acceso.html
- https://www.cdc.gov/mmwr/index2011.html

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

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r60

### Example pages
- https://www.cdc.gov/about/speakers/request-director.html
- https://www.cdc.gov/mmwr/index2008.html
- https://www.cdc.gov/tribal-health/data-research/datarequest.html

---

## Keyboard trap does not exist (WCAG criterion undetermined)

**Bug ID:** `VS-c01931e6`  
**Pattern ID:** `VS-4c341c77`  
**URL:** https://www.cdc.gov/han/2023/han00485.html  
**XPath / selector:** `<p class="disclaimer">`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r85` ([reference](https://alfa.siteimprove.com/rules/sia-r85))  
**Severity:** Moderate  
**Frequency:** 3 instances; 3 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### Description
Keyboard trap does not exist. Detected by Siteimprove Alfa rule sia-r85 on 3 of 1667 scanned pages (3 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/han/2023/han00485.html.
2. Locate the element: <p class="disclaimer">
3. Confirm the Siteimprove Alfa finding for rule sia-r85.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/han/2023/han00485.html
- https://www.cdc.gov/han/2024/han00510.html
- https://www.cdc.gov/overdose-prevention/data-research/facts-stats/clinical-drug-test-dashboard.html

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

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r85

### Example pages
- https://www.cdc.gov/han/2023/han00485.html
- https://www.cdc.gov/han/2024/han00510.html
- https://www.cdc.gov/overdose-prevention/data-research/facts-stats/clinical-drug-test-dashboard.html

---

## Element with orientation is not locked (WCAG criterion undetermined)

**Bug ID:** `VS-eee3bae6`  
**Pattern ID:** `VS-7fbb8b20`  
**URL:** https://www.cdc.gov/flu/weekly/weeklyarchives2025-2026/data/whoAllregt_phl08.html  
**XPath / selector:** `{"type":"document","children":[{"type":"element","children":[{"type":"element","`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r59` ([reference](https://alfa.siteimprove.com/rules/sia-r59))  
**Severity:** Moderate  
**Frequency:** 1 instances; 1 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### Description
Element with orientation is not locked. Detected by Siteimprove Alfa rule sia-r59 on 1 of 1667 scanned pages (1 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/flu/weekly/weeklyarchives2025-2026/data/whoAllregt_phl08.html.
2. Locate the element: {"type":"document","children":[{"type":"element","children":[{"type":"element","
3. Confirm the Siteimprove Alfa finding for rule sia-r59.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/flu/weekly/weeklyarchives2025-2026/data/whoAllregt_phl08.html

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

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r59

---

## First focusable element is link to main content (WCAG criterion undetermined)

**Bug ID:** `VS-e6861388`  
**Pattern ID:** `VS-aa242c2d`  
**URL:** https://www.cdc.gov/flu/weekly/weeklyarchives2025-2026/data/whoAllregt_phl08.html  
**XPath / selector:** `{"type":"document","children":[{"type":"element","children":[{"type":"element","`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r87` ([reference](https://alfa.siteimprove.com/rules/sia-r87))  
**Severity:** Moderate  
**Frequency:** 1 instances; 1 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### Description
First focusable element is link to main content. Detected by Siteimprove Alfa rule sia-r87 on 1 of 1667 scanned pages (1 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/flu/weekly/weeklyarchives2025-2026/data/whoAllregt_phl08.html.
2. Locate the element: {"type":"document","children":[{"type":"element","children":[{"type":"element","
3. Confirm the Siteimprove Alfa finding for rule sia-r87.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/flu/weekly/weeklyarchives2025-2026/data/whoAllregt_phl08.html

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

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r87

---

## Form field error is identified and described (WCAG criterion undetermined)

**Bug ID:** `VS-a3f7063a`  
**Pattern ID:** `VS-e43903a1`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5916a2_ensp.htm  
**XPath / selector:** `<a href="/mmwr/">`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r75` ([reference](https://alfa.siteimprove.com/rules/sia-r75))  
**Severity:** Moderate  
**Frequency:** 10 instances; 1 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### Description
Form field error is identified and described. Detected by Siteimprove Alfa rule sia-r75 on 1 of 1667 scanned pages (10 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5916a2_ensp.htm.
2. Locate the element: <a href="/mmwr/">
3. Confirm the Siteimprove Alfa finding for rule sia-r75.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5916a2_ensp.htm

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

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r75

---

## Assertive live region is marked as atomic (WCAG criterion undetermined)

**Bug ID:** `VS-e2c30956`  
**Pattern ID:** `VS-c461a167`  
**URL:** https://www.cdc.gov/mumps/outbreaks/index.html  
**XPath / selector:** `<table class="table table-striped table-width-unset data-table horizontal" aria-live="assertive" aria-rowcount="1">`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r54` ([reference](https://alfa.siteimprove.com/rules/sia-r54))  
**Severity:** Moderate  
**Frequency:** 1 instances; 1 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### Description
Assertive live region is marked as atomic. Detected by Siteimprove Alfa rule sia-r54 on 1 of 1667 scanned pages (1 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mumps/outbreaks/index.html.
2. Locate the element: <table class="table table-striped table-width-unset data-table horizontal" aria-live="assertive" aria-rowcount="1">
3. Confirm the Siteimprove Alfa finding for rule sia-r54.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/mumps/outbreaks/index.html

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

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r54

---

## Obsolete <blink> element (WCAG criterion undetermined)

**Bug ID:** `VS-7d12d80b`  
**Pattern ID:** `VS-a84da368`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5604a1.htm  
**XPath / selector:** `blink`  
**WCAG SC:** _undetermined_  
**Rule:** deprecated-html — `blink-element`  
**Severity:** Moderate  
**Frequency:** 1 instances; 1 of 1667 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W25 (1 week)

### HTML snippet
```html
<blink><big><strong>Disclaimer</strong></big>
</blink>
```

### Description
Obsolete <blink> element. Detected by deprecated-html rule blink-element on 1 of 1667 scanned pages (1 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5604a1.htm.
2. Locate the element: blink
3. Confirm the deprecated-html finding for rule blink-element.

### Impact
Not captured by automated scan — requires manual testing.

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5604a1.htm

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

### Suggested fix
Not captured by automated scan — requires manual testing.