# Accessibility bug reports — www.cdc.gov, week 2026-W35

69 issue type(s) from 1902 pages scanned. Generated 2026-08-30 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-428404ed`  
**Pattern ID:** `VS-179ad9b3`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w  
**XPath / selector:** `<a href="https://www.cdc.gov/Other/plugins/#pdf">`  
**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:** 1713 instances; 169 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Target size is at least 24×24 CSS pixels or has spacing (Minimum). Detected by Siteimprove Alfa rule sia-r113 on 169 of 1902 scanned pages (1713 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w.
2. Locate the element: <a href="https://www.cdc.gov/Other/plugins/#pdf">
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/mm6439a10.htm?s_cid=mm6439a10_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6341a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a1.htm
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- https://www.cdc.gov/niosh/ocas/supsteel.html
- http://www.cdc.gov/pcd/issues/2006/oct/06_0034_fr.htm
- http://www.cdc.gov/tobacco/campaign/tips/quit-smoking/quit-smoking-medications/medicine-tips.html
- https://www.cdc.gov/pcd/issues/2011/jan/09_0247a.htm
- https://www.cdc.gov/mmwR/preview/mmwrhtml/mm5931a4.htm
- https://www.cdc.gov/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10313
- http://www.cdc.gov/nchs/fastats/asthma.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000635.htm
- https://www.cdc.gov/mmwr/indss_2025.html
- http://www.cdc.gov/asthma/brfss/00/default.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6001a6.htm?s_cid=mm6001a6_w
- https://www.cdc.gov/niosh/npg/npgd0156.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6440a10.htm?s_cid=mm6440a10_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00017530.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5650a1.htm
- https://www.cdc.gov/pcd/issues/2011/may/10_0105_es.htm
- https://www.cdc.gov/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10149
- https://www.cdc.gov/nchs/products/databriefs/db461.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5424a3.htm

…and more — 169 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/mm6439a10.htm?s_cid=mm6439a10_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm

---

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

**Bug ID:** `VS-d539843e`  
**Pattern ID:** `VS-f7dba940`  
**URL:** http://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-118sp.html  
**XPath / selector:** `<a data-action="print" href="#print" class="d-none d-md-block" aria-label="print this page">`  
**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:** 93 instances; 56 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Accessible name of link or button matches visible label. Detected by Siteimprove Alfa rule sia-r14 on 56 of 1902 scanned pages (93 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-118sp.html.
2. Locate the element: <a data-action="print" href="#print" class="d-none d-md-block" aria-label="print this page">
3. Confirm the Siteimprove Alfa finding for rule sia-r14 against WCAG 2.5.3 Label in Name.

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

### Affected pages
- http://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-118sp.html
- http://www.cdc.gov/spanish/niosh/docs/2009-113_sp
- https://www.cdc.gov/balamuthia/es/about/index.html
- https://www.cdc.gov/vaccines/hcp/acip-recs/vacc-specific/covid-19.html
- https://www.cdc.gov/cannabis/es/about/las-leyes-estatales-sobre-el-cannabis-medicinal.html
- https://www.cdc.gov/niosh/publications/es/numbered/2008-112sp.html
- http://www.cdc.gov/salmonella/outbreaks/sproutedbeans-07-25/index.html
- http://www.cdc.gov/cancer/es/risk-factors/index.html
- https://www.cdc.gov/hepatitis/statistics/guidelinesandforms.htm
- https://www.cdc.gov/niosh/publications/es/numbered/2001-109sp.html
- https://www.cdc.gov/diabetes/es/articles/estigma-por-la-diabetes.html
- https://www.cdc.gov/hpv/es/vaccines/vacuna-contra-el-vph.html
- http://www.cdc.gov/cancer-survivors/es/patients/index.htm
- https://www.cdc.gov/healthy-swimming/es/response/what-to-do-when-there-is-poop-in-the-pool.html
- https://www.cdc.gov/spanish/niosh/hhe/actividad.html
- https://www.cdc.gov/hi-disease/es/la-enfermedad-por-haemophilus-influenzae.html
- https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/acip-recs/hcp/vaccine-specific/mmr.html
- https://www.cdc.gov/diabetes/es/diabetes-complications/la-diabetes-y-el-sistema-inmunitario.html
- http://www.cdc.gov/niosh/publications/numbered/2026-101.html
- https://www.cdc.gov/movernos
- http://www.cdc.gov/salmonella/outbreaks/saintpaul-04-26/investigation.html
- https://www.cdc.gov/hivnexus/hcp/prep/index.html
- http://www.cdc.gov/cancer-survivors/es/patients/complementary-alternative-medicine.html
- https://www.cdc.gov/rdc/b1datatype/mat-link.htm
- http://www.cdc.gov/spanish/niosh/docs/wp-solutions/2009-131_sp

…and more — 56 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
- http://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-118sp.html
- http://www.cdc.gov/spanish/niosh/docs/2009-113_sp
- https://www.cdc.gov/balamuthia/es/about/index.html

---

## Images must have alternative text (WCAG 1.1.1)

**Bug ID:** `VS-650e9314`  
**Pattern ID:** `VS-9074b4dd`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.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:** 4317 instances; 366 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 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 366 of 1902 scanned pages (4317 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.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/mm5711a7.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5034a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001774.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5814a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5528a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/pcd/issues/2011/jul/10_0193_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5825md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5416a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a1.htm
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5133a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00039482.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00038567.htm
- http://www.cdc.gov/pcd/issues/2006/jan/05_0099_zht.htm
- http://www.cdc.gov/pcd/issues/2008/apr/07_0039_fr.htm
- http://www.cdc.gov/pcd/issues/2006/oct/06_0034_fr.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5511a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00020270.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5834a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00054921.htm
- https://www.cdc.gov/pcd/issues/2011/jan/09_0247a.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00056515.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000635.htm

…and more — 366 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/mm5711a7.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5034a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001774.htm

---

## Image has accessible name (WCAG 1.1.1)

**Bug ID:** `VS-b837e69a`  
**Pattern ID:** `VS-a24eaa8c`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.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:** 1395 instances; 102 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Image has accessible name. Detected by Siteimprove Alfa rule sia-r2 on 102 of 1902 scanned pages (1395 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.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/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a1.htm
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/06_0034_fr.htm
- https://www.cdc.gov/pcd/issues/2011/jan/09_0247a.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000635.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00017530.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5650a1.htm
- https://www.cdc.gov/pcd/issues/2011/may/10_0105_es.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5424a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5603md.htm
- https://www.cdc.gov/pcd/issues/2011/may/10_0111.htm
- https://www.cdc.gov/pcd/issues/2008/oct/07_0184_zhs.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5729a2.htm
- https://www.cdc.gov/pcd/issues/2009/apr/08_0213_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050901.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5515a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5714a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4844md.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5646a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5520a3.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0217_es.htm
- http://www.cdc.gov/pcd/issues/2008/apr/07_0051_zht.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0226_zhs.htm

…and more — 102 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/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a1.htm

---

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

**Bug ID:** `VS-6acd1389`  
**Pattern ID:** `VS-9429bb8d`  
**URL:** https://www.cdc.gov/stophivtogether/hiv-testing/self-testing.html?s_cid=so_togetherconsumertk0186  
**XPath / selector:** `#accordion-7`  
**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 1902 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W35 (10 weeks)

### HTML snippet
```html
<div class="accordion indicator-plus accordion-white mb3" id="accordion-7" role="tablist">
```

### Description
Certain ARIA roles must contain particular children. Detected by axe-core rule aria-required-children on 1 of 1902 scanned pages (2 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/stophivtogether/hiv-testing/self-testing.html?s_cid=so_togetherconsumertk0186.
2. Locate the element: #accordion-7
3. Confirm the axe-core finding for rule aria-required-children against WCAG 1.3.1 Info and Relationships.

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

### Affected pages
- https://www.cdc.gov/stophivtogether/hiv-testing/self-testing.html?s_cid=so_togetherconsumertk0186

### 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-14e3b99e`  
**Pattern ID:** `VS-a0bdbdf6`  
**URL:** http://www.cdc.gov/mmwr/preview/mmwrhtml/00032890.htm  
**XPath / selector:** `ol`  
**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:** 37 instances; 21 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 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 21 of 1902 scanned pages (37 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/mmwr/preview/mmwrhtml/00032890.htm.
2. Locate the element: ol
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
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00032890.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00017761.htm
- https://www.cdc.gov/MMWR/preview/MMWRhtml/rr5210a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00021408.htm
- http://www.cdc.gov/act-early/families/milestones-matter.html
- http://www.cdc.gov/fluview/surveillance/2026-week-06.html
- http://www.cdc.gov/fluview/surveillance/2026-week-17.html
- https://www.cdc.gov/infectioncontrol/guidelines/healthcare-personnel/infrastructure.html
- https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/bird-flu/php/surveillance/h5n1-human-infections.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000542.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00000310.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00022714.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00018761.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5702a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001781.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00020519.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00056779.htm
- https://www.cdc.gov/fluview/surveillance/2026-week-03.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00021234.htm
- http://www.cdc.gov/fluview/surveillance/2026-week-15.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000602.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
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00032890.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00017761.htm
- https://www.cdc.gov/MMWR/preview/MMWRhtml/rr5210a1.htm

---

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

**Bug ID:** `VS-4a1bd0c7`  
**Pattern ID:** `VS-07ba3b17`  
**URL:** https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table4a_LLCP.html  
**XPath / selector:** `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:** 10 instances; 8 of 1902 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W35 (11 weeks)

### HTML snippet
```html
<table align="center" border="1" cellpadding="7" cellspacing="0" class="opt-in table table-bordered">
```

### Description
Table cell headers attributes must refer to other <th> elements in the same tabl. Detected by axe-core rule td-headers-attr on 8 of 1902 scanned pages (10 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table4a_LLCP.html.
2. Locate the element: table
3. Confirm the axe-core finding for rule td-headers-attr against WCAG 1.3.1 Info and Relationships.

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

### Affected pages
- https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table4a_LLCP.html
- http://www.cdc.gov/asthma/nhis/2021/table1-1.htm
- https://www.cdc.gov/brfss/acbs/2009/prevalence_tables/table14.html
- https://www.cdc.gov/acip/grade/mrna-rsv-vaccine-older-adults.html
- https://www.cdc.gov/nssp/php/onboarding-resources/companion-guide-ed-data-respiratory-illness.html
- https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table11b_LLCP.html
- https://www.cdc.gov/brfss/acbs/2009/prevalence_tables/table2.html
- https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table3b.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/brfss/acbs/2012/prevalence_tables/table4a_LLCP.html
- http://www.cdc.gov/asthma/nhis/2021/table1-1.htm
- https://www.cdc.gov/brfss/acbs/2009/prevalence_tables/table14.html

---

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

**Bug ID:** `VS-8742c7e7`  
**Pattern ID:** `VS-6175596b`  
**URL:** https://www.cdc.gov/liver-cancer/prevention/index.html  
**XPath / selector:** `.table-row.row[role="row"]:nth-child(3) > .table-col[data-col="2"][role="cell"] > li:nth-child(2)`  
**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:** 13 instances; 3 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### HTML snippet
```html
<li>Provider education</li>
```

### Description
<li> elements must be contained in a <ul> or <ol>. Detected by axe-core rule listitem on 3 of 1902 scanned pages (13 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/liver-cancer/prevention/index.html.
2. Locate the element: .table-row.row[role="row"]:nth-child(3) > .table-col[data-col="2"][role="cell"] > li:nth-child(2)
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/liver-cancer/prevention/index.html
- https://www.cdc.gov/maternal-infant-health/pregnancy-weight/index.html
- http://www.cdc.gov/lead-prevention/testing/index.html

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

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

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

### Example pages
- https://www.cdc.gov/liver-cancer/prevention/index.html
- https://www.cdc.gov/maternal-infant-health/pregnancy-weight/index.html
- http://www.cdc.gov/lead-prevention/testing/index.html

---

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

**Bug ID:** `VS-5c0ada8b`  
**Pattern ID:** `VS-d6097011`  
**URL:** https://www.cdc.gov/liver-cancer/prevention/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:** 627 instances; 59 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Presentational children of an element are not focusable. Detected by Siteimprove Alfa rule sia-r68 on 59 of 1902 scanned pages (627 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/liver-cancer/prevention/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/liver-cancer/prevention/index.html
- https://www.cdc.gov/tobacco/tobacco-features/military.html
- https://www.cdc.gov/phlp/php/about/competencies-for-legal-evaluation-studies.html
- https://www.cdc.gov/mosquitoes/mosquito-control/index.html
- http://www.cdc.gov/plague/healthcare/clinicians.html
- https://www.cdc.gov/niosh/aviation/prevention/aircrew-pesticides.html
- https://www.cdc.gov/healthy-aging/php/partner-resources/index.html
- http://www.cdc.gov/niosh/research-programs/portfolio/hwd.html
- http://www.cdc.gov/cancer/es/risk-factors/index.html
- https://www.cdc.gov/nchs/nhanes/about/index.html
- https://www.cdc.gov/niosh/extramural-programs/php/about/ercs.html
- https://www.cdc.gov/diabetes/es/articles/estigma-por-la-diabetes.html
- https://www.cdc.gov/healthy-swimming/es/response/what-to-do-when-there-is-poop-in-the-pool.html
- https://www.cdc.gov/about/divisions-offices/sbi.html
- http://www.cdc.gov/early-care-education/about/index.html
- http://www.cdc.gov/hearing-loss-children/communication-resources/referring-deaf-or-hard-of-hearing-children-to-early-intervention.html
- https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/acip-recs/hcp/vaccine-specific/mmr.html
- https://www.cdc.gov/diabetes/es/diabetes-complications/la-diabetes-y-el-sistema-inmunitario.html
- https://www.cdc.gov/infectioncontrol/guidelines/healthcare-personnel/infrastructure.html
- https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/bird-flu/php/surveillance/h5n1-human-infections.html
- https://www.cdc.gov/growth-chart-training/hcp/using-bmi/body-mass-index.html
- https://www.cdc.gov/movernos
- https://www.cdc.gov/infection-control/hcp/nicu-saureus/index.html
- http://www.cdc.gov/tobacco/php/foa/national-state-tobacco-control-program.html
- https://www.cdc.gov/parasites/travelers/index.html

…and more — 59 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/liver-cancer/prevention/index.html
- https://www.cdc.gov/tobacco/tobacco-features/military.html
- https://www.cdc.gov/phlp/php/about/competencies-for-legal-evaluation-studies.html

---

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

**Bug ID:** `VS-e4a9cfb4`  
**Pattern ID:** `VS-4408605e`  
**URL:** https://www.cdc.gov/phlp/php/about/competencies-for-legal-evaluation-studies.html  
**XPath / selector:** `<th style="background-color: #005eaa;" rowspan="3" scope="col" valign="top">`  
**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:** 101 instances; 7 of 1902 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W35 (11 weeks)

### Description
Element has required aria-owns. Detected by Siteimprove Alfa rule sia-r46 on 7 of 1902 scanned pages (101 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/phlp/php/about/competencies-for-legal-evaluation-studies.html.
2. Locate the element: <th style="background-color: #005eaa;" rowspan="3" scope="col" valign="top">
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/phlp/php/about/competencies-for-legal-evaluation-studies.html
- https://www.cdc.gov/brfss/acbs/2009/prevalence_tables/table14.html
- http://www.cdc.gov/brfss/acbs/2022/prevalence_tables/table10_LLCP.html
- https://www.cdc.gov/asthma/nhis/2017/table4-1.htm
- https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table11b_LLCP.html
- https://www.cdc.gov/asthma/nhis/2014/table2-1.htm
- http://www.cdc.gov/asthma/nhis/2011/table3-1.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-r46

### Example pages
- https://www.cdc.gov/phlp/php/about/competencies-for-legal-evaluation-studies.html
- https://www.cdc.gov/brfss/acbs/2009/prevalence_tables/table14.html
- http://www.cdc.gov/brfss/acbs/2022/prevalence_tables/table10_LLCP.html

---

## Element has required owned roles (WCAG 1.3.1)

**Bug ID:** `VS-bb92e7e3`  
**Pattern ID:** `VS-3c632d31`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5553a1.htm  
**XPath / selector:** `<h4>`  
**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:** 6 instances; 4 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Element has required owned roles. Detected by Siteimprove Alfa rule sia-r64 on 4 of 1902 scanned pages (6 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5553a1.htm.
2. Locate the element: <h4>
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/mmwr/preview/mmwrhtml/mm5553a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5240a4.htm
- https://www.cdc.gov/wtc/interest.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5247a2.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-r64

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5553a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5240a4.htm
- https://www.cdc.gov/wtc/interest.html

---

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

**Bug ID:** `VS-89d818e3`  
**Pattern ID:** `VS-9207ed51`  
**URL:** https://www.cdc.gov/brfss/acbs/2009/prevalence_tables/table14.html  
**XPath / selector:** `@headers="CurrentSE row32 "`  
**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:** 356 instances; 2 of 1902 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W35 (10 weeks)

### Description
aria-hidden element is not exposed to assistive technology. Detected by Siteimprove Alfa rule sia-r45 on 2 of 1902 scanned pages (356 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/brfss/acbs/2009/prevalence_tables/table14.html.
2. Locate the element: @headers="CurrentSE row32 "
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/brfss/acbs/2009/prevalence_tables/table14.html
- https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table11b_LLCP.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/brfss/acbs/2009/prevalence_tables/table14.html
- https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table11b_LLCP.html

---

## Table cell has header (WCAG 1.3.1)

**Bug ID:** `VS-0e7a4a4c`  
**Pattern ID:** `VS-3f067795`  
**URL:** https://www.cdc.gov/fluview/surveillance/2025-week-29.html  
**XPath / selector:** `<td style="width: 518px;" scope="row">`  
**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:** 20 instances; 1 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Table cell has header. Detected by Siteimprove Alfa rule sia-r77 on 1 of 1902 scanned pages (20 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/fluview/surveillance/2025-week-29.html.
2. Locate the element: <td style="width: 518px;" scope="row">
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/fluview/surveillance/2025-week-29.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-r77

---

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

**Bug ID:** `VS-2ed0abc6`  
**Pattern ID:** `VS-8ade3360`  
**URL:** https://www.cdc.gov/infection-control/hcp/healthcare-personnel-infrastructure-routine-practices/authors.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:** 24 instances; 24 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 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 1902 scanned pages (24 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/infection-control/hcp/healthcare-personnel-infrastructure-routine-practices/authors.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/infection-control/hcp/healthcare-personnel-infrastructure-routine-practices/authors.html
- https://www.cdc.gov/infection-control/hcp/isolation-precautions/appendix-a-table-5.html
- https://www.cdc.gov/disability-emergency-preparedness/people-with-disabilities/opportunities-to-get-involved.html
- http://www.cdc.gov/infection-control/hcp/environmental-control/environmental-sampling.html
- http://www.cdc.gov/infectioncontrol/guidelines/isolation/appendix/transmission-precautions.html
- https://www.cdc.gov/infectioncontrol/guidelines/healthcare-personnel/infrastructure.html
- http://www.cdc.gov/healthcare-associated-infections/hcp/patient-notification-toolkit/planning-strategies.html
- https://www.cdc.gov/hepatitis-surveillance-2022/appendix/table-5-1.html
- http://www.cdc.gov/infection-control/hcp/mdro-management/summary-recommendations.html
- https://www.cdc.gov/hepatitis-surveillance-2022/hepatitis-c/figure-3-1.html
- https://www.cdc.gov/hepatitis-surveillance-2022/hepatitis-a/table-1-1.html
- http://www.cdc.gov/infection-control/hcp/disinfection-sterilization/microbicidal-activity-low-temperature-sterilization.html
- http://www.cdc.gov/hepatitis/php/surveillance-guidance/references.html
- http://www.cdc.gov/covid/hcp/vaccine-considerations/contraindications-precautions.html
- https://www.cdc.gov/infectioncontrol/guidelines/isolation/appendix/environment.html
- https://www.cdc.gov/infectioncontrol/guidelines/isolation/appendix/ppe.html
- http://www.cdc.gov/vaccine-safety/vaccines/hepatitis-b.html
- https://www.cdc.gov/infection-control/hcp/disinfection-and-sterilization/steam-sterilization-cycle-times.html
- https://www.cdc.gov/uti/hcp/clinical-guidance/culture-stewardship-survey.html
- http://www.cdc.gov/vaccines/hcp/storage-handling/addendum.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/ss6207a1.htm?s_cid=ss6207a1_w
- https://www.cdc.gov/healthcare-associated-infections/php/research/hire-fellowship.html
- http://www.cdc.gov/hepatitis/php/health-care-outbreak-toolkit/hcv-molecular-epidemiology.html
- http://www.cdc.gov/malaria/php/surveillance/resources.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/infection-control/hcp/healthcare-personnel-infrastructure-routine-practices/authors.html
- https://www.cdc.gov/infection-control/hcp/isolation-precautions/appendix-a-table-5.html
- https://www.cdc.gov/disability-emergency-preparedness/people-with-disabilities/opportunities-to-get-involved.html

---

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

**Bug ID:** `VS-6f1518a5`  
**Pattern ID:** `VS-c613c153`  
**URL:** http://www.cdc.gov/infection-control/hcp/environmental-control/environmental-sampling.html  
**XPath / selector:** `.dfe-block.dfe-block--cdcmodule:nth-child(19) > .cdc-textblock > .table-responsive > 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:** 32 instances; 21 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 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 21 of 1902 scanned pages (32 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/infection-control/hcp/environmental-control/environmental-sampling.html.
2. Locate the element: .dfe-block.dfe-block--cdcmodule:nth-child(19) > .cdc-textblock > .table-responsive > div
3. Confirm the axe-core finding for rule scrollable-region-focusable against WCAG 2.1.1 Keyboard.

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

### Affected pages
- http://www.cdc.gov/infection-control/hcp/environmental-control/environmental-sampling.html
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6627a2.htm?s_cid=mm6627a2_w
- http://www.cdc.gov/fluview/surveillance/2026-week-06.html
- http://www.cdc.gov/fluview/surveillance/2026-week-17.html
- http://www.cdc.gov/nchs/data/hestat/hestat113.htm
- https://www.cdc.gov/hepatitis-surveillance-2022/appendix/table-5-1.html
- https://www.cdc.gov/fluview/surveillance/2025-week-18.html
- https://www.cdc.gov/vaccines/acip/recs/grade/PCV21-non-risk-based-adults-50-64.html
- https://www.cdc.gov/acip/grade/mrna-rsv-vaccine-older-adults.html
- https://www.cdc.gov/acip/grade/hpv-9v.html
- https://www.cdc.gov/tb/statistics/reports/2022/table32.htm
- https://www.cdc.gov/hepatitis-surveillance-2022/hepatitis-a/table-1-1.html
- https://www.cdc.gov/acip/grade/JYNNEOS-orthopoxvirus-heterologous.html
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6638a2.htm
- http://www.cdc.gov/acip/grade/mumps.html
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6643a6.htm?s_cid=mm6643a6_w
- http://www.cdc.gov/childvaxview/publications-resources/vaccine-coverage-among-children-usapi.html
- https://www.cdc.gov/nchs/data/hestat/maternal-mortality/2020/maternal-mortality-rates-2020.htm
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6645a1.htm?s_cid=mm6645a1_w
- https://www.cdc.gov/fluview/surveillance/2026-week-03.html
- http://www.cdc.gov/fluview/surveillance/2026-week-15.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
- http://www.cdc.gov/infection-control/hcp/environmental-control/environmental-sampling.html
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6627a2.htm?s_cid=mm6627a2_w
- http://www.cdc.gov/fluview/surveillance/2026-week-06.html

---

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

**Bug ID:** `VS-ca231c8c`  
**Pattern ID:** `VS-4b45acfe`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5415a3.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:** 4 instances; 4 of 1902 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W35 (11 weeks)

### 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 4 of 1902 scanned pages (4 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5415a3.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/rr5415a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5614a7.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5634a2.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

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5415a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5614a7.htm

---

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

**Bug ID:** `VS-a60287fb`  
**Pattern ID:** `VS-c80d5faa`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5906a3.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 1902 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W35 (7 weeks)

### 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 1902 scanned pages (1 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5906a3.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/mm5906a3.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

---

## Links must have discernible text (WCAG 2.4.4)

**Bug ID:** `VS-c4b3e603`  
**Pattern ID:** `VS-e9fe47ac`  
**URL:** https://www.cdc.gov/pcd/issues/2012/11_0249_es.htm  
**XPath / selector:** `a[href$="email.do"]`  
**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:** 469 instances; 161 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### HTML snippet
```html
<a href="http://www.cdc.gov/email.do" onclick="openRequestedPopup(); return false;" class="noLinking">&nbsp;</a>
```

### Description
Links must have discernible text. Detected by axe-core rule link-name on 161 of 1902 scanned pages (469 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2012/11_0249_es.htm.
2. Locate the element: a[href$="email.do"]
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/2012/11_0249_es.htm
- http://www.cdc.gov/mmwr/indss_2008.html
- https://www.cdc.gov/pcd/issues/2011/jul/10_0193_es.htm
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- http://www.cdc.gov/pcd/issues/2006/jan/05_0099_zht.htm
- http://www.cdc.gov/pcd/issues/2008/apr/07_0039_fr.htm
- http://www.cdc.gov/pcd/issues/2006/oct/06_0034_fr.htm
- https://www.cdc.gov/flu/vaccines/keyfacts.html
- https://www.cdc.gov/pcd/issues/2011/jan/09_0247a.htm
- https://www.cdc.gov/niosh-rtecs/YR3540D0.html
- https://www.cdc.gov/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10313
- https://www.cdc.gov/active-people-healthy-nation/php/tools/arts-and-culture.html
- http://www.cdc.gov/PCD/issues/2006/apr/05_0098_es.htm
- http://www.cdc.gov/pcd/issues/2008/jan/06_0158_zht.htm
- https://www.cdc.gov/pcd/issues/2008/oct/07_0163_zhs.htm
- http://www.cdc.gov/niosh/docs/2014-110
- https://www.cdc.gov/niosh-rtecs/YQ8ADAE0.html
- http://www.cdc.gov/pcd/issues/2009/apr/08_0101.htm
- https://www.cdc.gov/pcd/issues/2009/oct/08_0147_es.htm
- https://www.cdc.gov/pcd/issues/2008/apr/07_0200_fr.htm
- https://www.cdc.gov/pcd/issues/2008/apr/07_0209_zhs.htm
- https://www.cdc.gov/pcd/issues/2011/may/10_0105_es.htm
- https://www.cdc.gov/pcd/issues/2005/nov/05_0059_fr.htm
- https://www.cdc.gov/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10149
- http://www.cdc.gov/pcd/issues/2006/jan/05_0129_fr.htm

…and more — 161 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/2012/11_0249_es.htm
- http://www.cdc.gov/mmwr/indss_2008.html
- https://www.cdc.gov/pcd/issues/2011/jul/10_0193_es.htm

---

## Link has accessible name (WCAG 2.4.4)

**Bug ID:** `VS-18310a15`  
**Pattern ID:** `VS-28ebd979`  
**URL:** http://www.cdc.gov/PCD/issues/2006/apr/05_0126_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:** 159 instances; 53 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Link has accessible name. Detected by Siteimprove Alfa rule sia-r11 on 53 of 1902 scanned pages (159 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/PCD/issues/2006/apr/05_0126_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
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/06_0034_fr.htm
- https://www.cdc.gov/pcd/issues/2011/jan/09_0247a.htm
- https://www.cdc.gov/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10313
- https://www.cdc.gov/active-people-healthy-nation/php/tools/arts-and-culture.html
- https://www.cdc.gov/pcd/issues/2011/may/10_0105_es.htm
- https://www.cdc.gov/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10149
- https://www.cdc.gov/pcd/issues/2011/may/10_0111.htm
- https://www.cdc.gov/pcd/issues/2008/oct/07_0184_zhs.htm
- https://www.cdc.gov/pcd/issues/2009/apr/08_0213_es.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0217_es.htm
- http://www.cdc.gov/pcd/issues/2008/apr/07_0051_zht.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0226_zhs.htm
- https://www.cdc.gov/pcd/issues/2008/apr/07_0049_fr.htm
- https://www.cdc.gov/pcd/issues/2008/jul/07_0090_es.htm
- https://www.cdc.gov/niosh/publications/numbered/2023-133.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a1.htm
- http://www.cdc.gov/pcd/issues/2008/apr/07_0200_zhs.htm
- http://www.cdc.gov/pcd/issues/2009/jul/08_0150.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5614a7.htm
- http://www.cdc.gov/pcd/issues/2011/may/10_0064_es.htm
- https://www.cdc.gov/pcd/issues/2010/may/09_0170.htm
- http://www.cdc.gov/pcd/issues/2009/apr/08_0206.htm
- http://www.cdc.gov/pcd/issues/2008/oct/07_0180_zhs.htm
- https://www.cdc.gov/pcd/issues/2012/11_0086a.htm

…and more — 53 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
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/06_0034_fr.htm
- https://www.cdc.gov/pcd/issues/2011/jan/09_0247a.htm

---

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

**Bug ID:** `VS-1d6d8963`  
**Pattern ID:** `VS-c126b6a6`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.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:** 355 instances; 355 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

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

### Description
<html> element must have a lang attribute. Detected by axe-core rule html-has-lang on 355 of 1902 scanned pages (355 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.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/mm5711a7.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5034a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001774.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5528a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/pcd/issues/2011/jul/10_0193_es.htm
- https://www.cdc.gov/flu/weekly/WeeklyArchives2023-2024/WHONPHL02.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5416a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a1.htm
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5133a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00039482.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00038567.htm
- http://www.cdc.gov/pcd/issues/2006/jan/05_0099_zht.htm
- http://www.cdc.gov/pcd/issues/2008/apr/07_0039_fr.htm
- http://www.cdc.gov/pcd/issues/2006/oct/06_0034_fr.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5511a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00020270.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00054921.htm
- https://www.cdc.gov/pcd/issues/2011/jan/09_0247a.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00056515.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000635.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00036646.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00053062.htm

…and more — 355 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/mm5711a7.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5034a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001774.htm

---

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

**Bug ID:** `VS-1e13b0e3`  
**Pattern ID:** `VS-7a0e5645`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.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:** 98 instances; 98 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Document has a valid lang attribute. Detected by Siteimprove Alfa rule sia-r4 on 98 of 1902 scanned pages (98 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.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/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a1.htm
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/06_0034_fr.htm
- https://www.cdc.gov/pcd/issues/2011/jan/09_0247a.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000635.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00017530.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5650a1.htm
- https://www.cdc.gov/pcd/issues/2011/may/10_0105_es.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5424a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5603md.htm
- https://www.cdc.gov/pcd/issues/2011/may/10_0111.htm
- https://www.cdc.gov/pcd/issues/2008/oct/07_0184_zhs.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5729a2.htm
- https://www.cdc.gov/pcd/issues/2009/apr/08_0213_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050901.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5515a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5714a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4844md.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5646a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5520a3.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0217_es.htm
- http://www.cdc.gov/pcd/issues/2008/apr/07_0051_zht.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0226_zhs.htm

…and more — 98 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/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a1.htm

---

## Form elements must have labels (WCAG 4.1.2)

**Bug ID:** `VS-997575fe`  
**Pattern ID:** `VS-fafffee0`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_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:** 113 instances; 96 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 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 96 of 1902 scanned pages (113 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_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/mm6439a10.htm?s_cid=mm6439a10_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6129a4.htm?s_cid=mm6129a4_w
- http://www.cdc.gov/mmwr/indss_2008.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6341a3.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6307md.htm?s_cid=mm6307md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6236a1.htm
- https://www.cdc.gov/mmwR/preview/mmwrhtml/mm5931a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6008a2.htm?s_cid=mm6008a2_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6344a1.htm?s_cid=mm6344a1_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6001a6.htm?s_cid=mm6001a6_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6013a4.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6440a10.htm?s_cid=mm6440a10_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6020md.htm?s_cid=mm6020md_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6445md.htm?s_cid=mm6445md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6435a5.htm?s_cid=mm6435a5_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6017a1.htm?s_cid=mm6017a1_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6433a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6015a2.htm?s_cid=mm6015a2_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6153a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6021a4.htm?s_cid=mm6021a4_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6444a1.htm?s_cid=mm6444a1_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6451md.htm?s_cid=mm6451md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/su6001a17.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5917a9.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6434a4.htm

…and more — 96 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/mm6439a10.htm?s_cid=mm6439a10_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6129a4.htm?s_cid=mm6129a4_w
- http://www.cdc.gov/mmwr/indss_2008.html

---

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

**Bug ID:** `VS-c999cbff`  
**Pattern ID:** `VS-fab92378`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6341a3.htm  
**XPath / selector:** `select`  
**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:** 4 instances; 4 of 1902 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W35 (11 weeks)

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

</select>
```

### Description
Select element must have an accessible name. Detected by axe-core rule select-name on 4 of 1902 scanned pages (4 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6341a3.htm.
2. Locate the element: select
3. Confirm the axe-core finding for rule select-name against WCAG 4.1.2 Name, Role, Value.

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

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6341a3.htm
- https://www.cdc.gov/tobacco/campaign/tips/quit-smoking/quit-smoking-medications/which-quit-smoking-medicine-is-right-for-you/without-medicine.html
- http://www.cdc.gov/tobacco/campaign/tips/quit-smoking/quit-smoking-medications/which-quit-smoking-medicine-is-right-for-you/without-medicine.html
- http://www.cdc.gov/tobacco/campaign/tips/spanish/dejar-fumar/medicamentos/como-usar-medicamentos/chicle-de-nicotina.html

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

### Suggested fix
**How to fix:** Give the <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/mmwr/preview/mmwrhtml/mm6341a3.htm
- https://www.cdc.gov/tobacco/campaign/tips/quit-smoking/quit-smoking-medications/which-quit-smoking-medicine-is-right-for-you/without-medicine.html
- http://www.cdc.gov/tobacco/campaign/tips/quit-smoking/quit-smoking-medications/which-quit-smoking-medicine-is-right-for-you/without-medicine.html

---

## Buttons must have discernible text (WCAG 4.1.2)

**Bug ID:** `VS-cc9bc01c`  
**Pattern ID:** `VS-e7298c00`  
**URL:** https://www.cdc.gov/hiv/es/prevention/como-prevenir-el-vih-con-el-uso-de-pep.html  
**XPath / selector:** `#search__icon`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** axe-core — `button-name` ([reference](https://dequeuniversity.com/rules/axe/4.12/button-name?application=axeAPI))  
**Severity:** Critical  
**Frequency:** 1 instances; 1 of 1902 pages affected
  
**History:** first seen 2026-W26, last seen 2026-W35 (8 weeks)

### HTML snippet
```html
<button id="search__icon" class="c-search__icon"></button>
```

### Description
Buttons must have discernible text. Detected by axe-core rule button-name on 1 of 1902 scanned pages (1 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/hiv/es/prevention/como-prevenir-el-vih-con-el-uso-de-pep.html.
2. Locate the element: #search__icon
3. Confirm the axe-core finding for rule button-name against WCAG 4.1.2 Name, Role, Value.

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

### Affected pages
- https://www.cdc.gov/hiv/es/prevention/como-prevenir-el-vih-con-el-uso-de-pep.html

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

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

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

---

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

**Bug ID:** `VS-9ed8c31e`  
**Pattern ID:** `VS-3f76c7ea`  
**URL:** http://www.cdc.gov/cancer/es/prevention/healthy-choices.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:** 41 instances; 13 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### HTML snippet
```html
<iframe src="//www.youtube-nocookie.com/embed/0PwuL6k8byY?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 13 of 1902 scanned pages (41 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/cancer/es/prevention/healthy-choices.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
- http://www.cdc.gov/cancer/es/prevention/healthy-choices.html
- https://www.cdc.gov/cancer/features/prostate-cancer.html
- https://www.cdc.gov/measles/resources/videos.html
- https://www.cdc.gov/natural-disasters/psa-toolkit/boil-water-advisory.html
- https://www.cdc.gov/school-nutrition/water-access/microlearning.html
- https://www.cdc.gov/natural-disasters/psa-toolkit/stay-safe-during-a-flood.html
- https://www.cdc.gov/one-health/about/index.html
- https://www.cdc.gov/hearher/hcp/videos/index.html
- https://www.cdc.gov/stop-overdose/es/caring/la-naloxona-y-su-poder-de-salvar-vidas.html
- https://www.cdc.gov/hpv/hcp/educational-resources/videos-answering-parents-questions.html
- https://www.cdc.gov/stophivtogether/hiv-testing/self-testing.html?s_cid=so_togetherconsumertk0186
- https://www.cdc.gov/stophivtogether/prepared/index.html?s_cid=so_togetherconsumertk0347
- http://www.cdc.gov/hearher/caring/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
- http://www.cdc.gov/cancer/es/prevention/healthy-choices.html
- https://www.cdc.gov/cancer/features/prostate-cancer.html
- https://www.cdc.gov/measles/resources/videos.html

---

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

**Bug ID:** `VS-28efe6cd`  
**Pattern ID:** `VS-58301a87`  
**URL:** http://www.cdc.gov/hivpartners/php/riskandprevention/index.html  
**XPath / selector:** `button[aria-controls="accordion-panel-6xwykPNSWZ"]`  
**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:** 13 instances; 6 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### HTML snippet
```html
<button aria-controls="accordion-panel-6xwykPNSWZ" aria-expanded="false" class="accordion-button collapsed" data-bs-target="#accordion-panel-6xwykPNSWZ" data-bs-toggle="collapse" type="button">
```

### Description
Interactive controls must not be nested. Detected by axe-core rule nested-interactive on 6 of 1902 scanned pages (13 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/hivpartners/php/riskandprevention/index.html.
2. Locate the element: button[aria-controls="accordion-panel-6xwykPNSWZ"]
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
- http://www.cdc.gov/hivpartners/php/riskandprevention/index.html
- http://www.cdc.gov/tobacco/campaign/tips/diseases/heart-disease-stroke.html
- http://www.cdc.gov/tobacco/campaign/tips/resources/data/cigarette-smoking-in-united-states.html
- https://www.cdc.gov/tobacco/campaign/tips/groups/military.html?s_cid=OSH_misc_M436
- http://www.cdc.gov/violenceprevention/aces/ace-brfss.html
- https://www.cdc.gov/stophivtogether/hiv-testing/self-testing.html?s_cid=so_togetherconsumertk0186

### 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
- http://www.cdc.gov/hivpartners/php/riskandprevention/index.html
- http://www.cdc.gov/tobacco/campaign/tips/diseases/heart-disease-stroke.html
- http://www.cdc.gov/tobacco/campaign/tips/resources/data/cigarette-smoking-in-united-states.html

---

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

**Bug ID:** `VS-f9fea00c`  
**Pattern ID:** `VS-5c82bd60`  
**URL:** http://www.cdc.gov/united-states-cancer-statistics/publications/prostate-cancer-stat-bite.html  
**XPath / selector:** `th[aria-labelledby=":rb:-heading-0"] > .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:** 16 instances; 2 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 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 2 of 1902 scanned pages (16 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/united-states-cancer-statistics/publications/prostate-cancer-stat-bite.html.
2. Locate the element: th[aria-labelledby=":rb:-heading-0"] > .sort-icon[role="button"]
3. Confirm the axe-core finding for rule aria-command-name against WCAG 4.1.2 Name, Role, Value.

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

### Affected pages
- http://www.cdc.gov/united-states-cancer-statistics/publications/prostate-cancer-stat-bite.html
- https://www.cdc.gov/hepatitis-surveillance-2022/hepatitis-c/figure-3-1.html

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

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

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

### Example pages
- http://www.cdc.gov/united-states-cancer-statistics/publications/prostate-cancer-stat-bite.html
- https://www.cdc.gov/hepatitis-surveillance-2022/hepatitis-c/figure-3-1.html

---

## ARIA tab nodes must have an accessible name (WCAG 4.1.2)

**Bug ID:** `VS-56d99436`  
**Pattern ID:** `VS-e1c6d4a1`  
**URL:** http://www.cdc.gov/nccdphp/dnpao/data-trends-maps/index.html  
**XPath / selector:** `.dropdown`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** axe-core — `aria-tab-name` ([reference](https://dequeuniversity.com/rules/axe/4.12/aria-tab-name?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 1 instances; 1 of 1902 pages affected
  
**History:** first seen 2026-W35, last seen 2026-W35 (1 week)

### HTML snippet
```html
<div role="tab" class="dropdown">
```

### Description
ARIA tab nodes must have an accessible name. Detected by axe-core rule aria-tab-name on 1 of 1902 scanned pages (1 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/nccdphp/dnpao/data-trends-maps/index.html.
2. Locate the element: .dropdown
3. Confirm the axe-core finding for rule aria-tab-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
- http://www.cdc.gov/nccdphp/dnpao/data-trends-maps/index.html

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

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

---

## ARIA hidden element must not be focusable or contain focusable elements (WCAG 4.1.2)

**Bug ID:** `VS-bd6c8b5d`  
**Pattern ID:** `VS-45146742`  
**URL:** http://www.cdc.gov/ardi  
**XPath / selector:** `#divIdleTimeout`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** axe-core — `aria-hidden-focus` ([reference](https://dequeuniversity.com/rules/axe/4.12/aria-hidden-focus?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 1 instances; 1 of 1902 pages affected
  
**History:** first seen 2026-W29, last seen 2026-W35 (4 weeks)

### HTML snippet
```html
<div id="divIdleTimeout" class="modal fade background-and-border-none" style="display: block;background: none;width: 100%;box-shadow: none;border: none;" tabindex="-1" role="dialog" aria-hidden="true"
```

### Description
ARIA hidden element must not be focusable or contain focusable elements. Detected by axe-core rule aria-hidden-focus on 1 of 1902 scanned pages (1 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/ardi.
2. Locate the element: #divIdleTimeout
3. Confirm the axe-core finding for rule aria-hidden-focus 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/ardi

### 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 put focusable elements inside aria-hidden="true"; they become a keyboard trap for screen-reader users.

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

---

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

**Bug ID:** `VS-59468567`  
**Pattern ID:** `VS-ebb1c464`  
**URL:** https://www.cdc.gov/stophivtogether/hiv-testing/self-testing.html?s_cid=so_togetherconsumertk0186  
**XPath / selector:** `#UNIQUE36545683a172a882dd`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** axe-core — `aria-prohibited-attr` ([reference](https://dequeuniversity.com/rules/axe/4.12/aria-prohibited-attr?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 1 instances; 1 of 1902 pages affected
  
**History:** first seen 2026-W28, last seen 2026-W35 (8 weeks)

### HTML snippet
```html
<div class="cdc-card-slider cdc-video-slider slick-initialized slick-slider cdc-carousel-slider" id="UNIQUE36545683a172a882dd" aria-label="Carousel">
```

### Description
Elements must only use permitted ARIA attributes. Detected by axe-core rule aria-prohibited-attr on 1 of 1902 scanned pages (1 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/stophivtogether/hiv-testing/self-testing.html?s_cid=so_togetherconsumertk0186.
2. Locate the element: #UNIQUE36545683a172a882dd
3. Confirm the axe-core finding for rule aria-prohibited-attr against WCAG 4.1.2 Name, Role, Value.

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

### Affected pages
- https://www.cdc.gov/stophivtogether/hiv-testing/self-testing.html?s_cid=so_togetherconsumertk0186

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

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

---

## Form field has accessible name (WCAG 4.1.2)

**Bug ID:** `VS-dbd3b157`  
**Pattern ID:** `VS-a48e6078`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_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:** 45 instances; 27 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Form field has accessible name. Detected by Siteimprove Alfa rule sia-r8 on 27 of 1902 scanned pages (45 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_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/mm6439a10.htm?s_cid=mm6439a10_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6341a3.htm
- https://www.cdc.gov/mmwR/preview/mmwrhtml/mm5931a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6001a6.htm?s_cid=mm6001a6_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6440a10.htm?s_cid=mm6440a10_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6433a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6015a2.htm?s_cid=mm6015a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6039a5.htm?s_cid=mm6039a5_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5920a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6018a1.htm?s_cid=mm6018a1_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6238a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6108a3.htm?s_cid=mm6108a3_w
- https://www.cdc.gov/sickle-cell/toolkit/lung-health.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6011a2.htm?s_cid=mm6011a2_w
- https://www.cdc.gov/tobacco/campaign/tips/quit-smoking/quit-smoking-medications/which-quit-smoking-medicine-is-right-for-you/without-medicine.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a1.htm?s_cid=mm6439a1_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6324a5.htm?s_cid=mm6324a5_w
- http://www.cdc.gov/tobacco/campaign/tips/quit-smoking/quit-smoking-medications/which-quit-smoking-medicine-is-right-for-you/without-medicine.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6138a6.htm?s_cid=mm6138a6_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6146a7.htm?s_cid=mm6146a7_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/su6401a2.htm?s_cid=su6401a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6414a8.htm?s_cid=mm6414a8_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6349a8.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6450a2.htm?s_cid=mm6450a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/su6401a3.htm?s_cid=su6401a3_w

…and more — 27 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/mm6439a10.htm?s_cid=mm6439a10_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6341a3.htm
- https://www.cdc.gov/mmwR/preview/mmwrhtml/mm5931a4.htm

---

## Button has accessible name (WCAG 4.1.2)

**Bug ID:** `VS-08f23fa1`  
**Pattern ID:** `VS-29f9f921`  
**URL:** https://www.cdc.gov/stophivtogether/hiv-treatment/talk-treatment.html  
**XPath / selector:** `<button class="lsht-validation__button">`  
**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:** 2 instances; 2 of 1902 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W35 (11 weeks)

### Description
Button has accessible name. Detected by Siteimprove Alfa rule sia-r12 on 2 of 1902 scanned pages (2 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/stophivtogether/hiv-treatment/talk-treatment.html.
2. Locate the element: <button class="lsht-validation__button">
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/stophivtogether/hiv-treatment/talk-treatment.html
- https://www.cdc.gov/stophivtogether/prepared/index.html?s_cid=so_togetherconsumertk0347

### 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

### Example pages
- https://www.cdc.gov/stophivtogether/hiv-treatment/talk-treatment.html
- https://www.cdc.gov/stophivtogether/prepared/index.html?s_cid=so_togetherconsumertk0347

---

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

**Bug ID:** `VS-9fa75bb2`  
**Pattern ID:** `VS-a2a3dffb`  
**URL:** https://www.cdc.gov/tobacco/campaign/tips/groups/military.html?s_cid=OSH_misc_M436  
**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:** 1 instances; 1 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Component with same name serves same purpose. Detected by Siteimprove Alfa rule sia-r90 on 1 of 1902 scanned pages (1 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/tobacco/campaign/tips/groups/military.html?s_cid=OSH_misc_M436.
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/groups/military.html?s_cid=OSH_misc_M436

### 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

---

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

**Bug ID:** `VS-28fd25c1`  
**Pattern ID:** `VS-be8d563e`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.htm  
**XPath / selector:** `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:** 504 instances; 341 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 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: <a href="mailto:mmwrq@cdc.gov">mmwrq@cdc.gov</a>
```

### Description
Elements must meet minimum color contrast ratio thresholds. Detected by axe-core rule color-contrast on 341 of 1902 scanned pages (504 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.htm.
2. Locate the element: 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/mm5711a7.htm
- https://www.cdc.gov/pcd/issues/2012/11_0249_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6129a4.htm?s_cid=mm6129a4_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5034a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001774.htm
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6637a6.htm?s_cid=mm6637a6_w
- http://www.cdc.gov/mmwr/indss_2008.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5814a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5528a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5825md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5416a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5133a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00039482.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00038567.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6236a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5511a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00020270.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5834a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00054921.htm
- https://www.cdc.gov/mmwR/preview/mmwrhtml/mm5931a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00056515.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000635.htm

…and more — 341 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/mm5711a7.htm
- https://www.cdc.gov/pcd/issues/2012/11_0249_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6129a4.htm?s_cid=mm6129a4_w

---

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

**Bug ID:** `VS-6f6ab3b4`  
**Pattern ID:** `VS-f7e99f4b`  
**URL:** https://www.cdc.gov/niosh/erhms/about  
**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:** 772 instances; 141 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Text has sufficient color contrast (Enhanced). Detected by Siteimprove Alfa rule sia-r69 on 141 of 1902 scanned pages (772 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/niosh/erhms/about.
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/niosh/erhms/about
- http://www.cdc.gov/niosh/heat-stress/about/illnesses.html
- https://www.cdc.gov/infrastructure/resources-public-health-professionals/direct-assistance.html
- https://www.cdc.gov/disability-and-health-partners/php/funding/index.html
- https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/safe-labs/php/about
- https://www.cdc.gov/liver-cancer/prevention/index.html
- https://www.cdc.gov/tobacco/tobacco-features/military.html
- https://www.cdc.gov/phlp/php/about/competencies-for-legal-evaluation-studies.html
- https://www.cdc.gov/active-people-healthy-nation/php/tools/arts-and-culture.html
- https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/meningococcal/vaccines/index.html
- http://www.cdc.gov/plague/healthcare/clinicians.html
- http://www.cdc.gov/restaurant-food-safety/communication-resources/tips-for-dining-out.html
- https://www.cdc.gov/balamuthia/es/about/index.html
- https://www.cdc.gov/science-ambassador/applicants/application.html
- https://www.cdc.gov/vaccines/hcp/acip-recs/vacc-specific/covid-19.html
- https://www.cdc.gov/niosh/aviation/prevention/aircrew-pesticides.html
- http://www.cdc.gov/sti-funding/php/about/index.html
- https://www.cdc.gov/cannabis/es/about/las-leyes-estatales-sobre-el-cannabis-medicinal.html
- https://www.cdc.gov/media/contact-us/index.html
- http://www.cdc.gov/autism/about/information-for-families.html
- http://www.cdc.gov/niosh/research-programs/portfolio/hwd.html
- https://www.cdc.gov/cholera/illness.html
- http://www.cdc.gov/cancer/es/risk-factors/index.html
- https://www.cdc.gov/nchs/nhanes/about/index.html
- http://www.cdc.gov/hearing-loss/about/index.html

…and more — 141 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/niosh/erhms/about
- http://www.cdc.gov/niosh/heat-stress/about/illnesses.html
- https://www.cdc.gov/infrastructure/resources-public-health-professionals/direct-assistance.html

---

## Text has enhanced contrast (WCAG 1.4.6)

**Bug ID:** `VS-ae2e4d5f`  
**Pattern ID:** `VS-646b1e0b`  
**URL:** https://www.cdc.gov/niosh/erhms/about  
**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:** 11316 instances; 381 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Text has enhanced contrast. Detected by Siteimprove Alfa rule sia-r66 on 381 of 1902 scanned pages (11316 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/niosh/erhms/about.
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/niosh/erhms/about
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w
- http://www.cdc.gov/sickle-cell/sickle-cell-trait/sickle-cell-trait-toolkit.html
- http://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-118sp.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6341a3.htm
- http://www.cdc.gov/niosh/heat-stress/about/illnesses.html
- https://www.cdc.gov/infrastructure/resources-public-health-professionals/direct-assistance.html
- https://www.cdc.gov/disability-and-health-partners/php/funding/index.html
- http://www.cdc.gov/anthrax/site.html
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- http://www.cdc.gov/mmwr/volumes/72/wr/mm7224a2.htm?s_cid=mm7224a2_w
- https://www.cdc.gov/niosh/ocas/supsteel.html
- https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/safe-labs/php/about
- https://www.cdc.gov/liver-cancer/prevention/index.html
- http://www.cdc.gov/pcd/issues/2006/oct/06_0034_fr.htm
- http://www.cdc.gov/spanish/niosh/docs/2009-113_sp
- https://www.cdc.gov/wtc/ohi.html
- https://www.cdc.gov/mmwr/volumes/73/wr/mm7345a2.htm?s_cid=mm7345a2_w
- http://www.cdc.gov/mmwr/volumes/72/wr/mm7241a3.htm?s_cid=mm7241a3_w
- http://www.cdc.gov/tobacco/campaign/tips/quit-smoking/quit-smoking-medications/medicine-tips.html
- https://www.cdc.gov/pcd/issues/2011/jan/09_0247a.htm
- https://www.cdc.gov/tobacco/tobacco-features/military.html
- http://www.cdc.gov/niosh/docs/2016-151/default.html
- https://www.cdc.gov/mmwR/preview/mmwrhtml/mm5931a4.htm
- https://www.cdc.gov/phlp/php/about/competencies-for-legal-evaluation-studies.html

…and more — 381 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/niosh/erhms/about
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w
- http://www.cdc.gov/sickle-cell/sickle-cell-trait/sickle-cell-trait-toolkit.html

---

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

**Bug ID:** `VS-4011e0af`  
**Pattern ID:** `VS-fbf54eba`  
**URL:** https://www.cdc.gov/niosh/erhms/about  
**XPath / selector:** `<p class="cdc-footer__super-desc">`  
**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:** 1714 instances; 152 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Link is distinguishable without relying on color. Detected by Siteimprove Alfa rule sia-r74 on 152 of 1902 scanned pages (1714 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/niosh/erhms/about.
2. Locate the element: <p class="cdc-footer__super-desc">
3. Confirm the Siteimprove Alfa finding for rule sia-r74 against WCAG 1.4.8 Visual Presentation.

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

### Affected pages
- https://www.cdc.gov/niosh/erhms/about
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm
- http://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-118sp.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6341a3.htm
- http://www.cdc.gov/niosh/heat-stress/about/illnesses.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a1.htm
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/06_0034_fr.htm
- http://www.cdc.gov/spanish/niosh/docs/2009-113_sp
- https://www.cdc.gov/wtc/ohi.html
- https://www.cdc.gov/pcd/issues/2011/jan/09_0247a.htm
- http://www.cdc.gov/niosh/docs/2016-151/default.html
- https://www.cdc.gov/mmwR/preview/mmwrhtml/mm5931a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000635.htm
- http://www.cdc.gov/niosh/docs/video/2024-120
- https://www.cdc.gov/niosh/aviation/prevention/aircrew-pesticides.html
- https://www.cdc.gov/pcd/issues/2015/14_0439.htm
- http://www.cdc.gov/prams/index.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00017530.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5650a1.htm
- https://www.cdc.gov/pcd/issues/2011/may/10_0105_es.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5424a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5603md.htm
- https://www.cdc.gov/pcd/issues/2011/may/10_0111.htm

…and more — 152 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/niosh/erhms/about
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm
- http://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-118sp.html

---

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

**Bug ID:** `VS-78e49c0b`  
**Pattern ID:** `VS-2208081b`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w  
**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:** 9522 instances; 149 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Text has minimum contrast ratio of 4.5:1. Detected by Siteimprove Alfa rule sia-r73 on 149 of 1902 scanned pages (9522 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w.
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/mm6439a10.htm?s_cid=mm6439a10_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6341a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a1.htm
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/06_0034_fr.htm
- https://www.cdc.gov/wtc/ohi.html
- https://www.cdc.gov/pcd/issues/2011/jan/09_0247a.htm
- https://www.cdc.gov/mmwR/preview/mmwrhtml/mm5931a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000635.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6001a6.htm?s_cid=mm6001a6_w
- https://www.cdc.gov/pcd/issues/2015/14_0439.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6440a10.htm?s_cid=mm6440a10_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00017530.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5650a1.htm
- https://www.cdc.gov/pcd/issues/2011/may/10_0105_es.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5424a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5603md.htm
- https://www.cdc.gov/pcd/issues/2011/may/10_0111.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6433a1.htm
- https://www.cdc.gov/pcd/issues/2008/oct/07_0184_zhs.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5729a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6015a2.htm?s_cid=mm6015a2_w
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6605a1.htm?s_cid=mm6605a1_w

…and more — 149 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/mm6439a10.htm?s_cid=mm6439a10_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm

---

## Scrollable element is keyboard accessible (WCAG 1.4.8)

**Bug ID:** `VS-ae4151d3`  
**Pattern ID:** `VS-388b5438`  
**URL:** https://www.cdc.gov/pcd/collections/Implementation_Evaluation.htm  
**XPath / selector:** `<p class="toc">`  
**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:** 241 instances; 2 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (11 weeks)

### Description
Scrollable element is keyboard accessible. Detected by Siteimprove Alfa rule sia-r80 on 2 of 1902 scanned pages (241 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/collections/Implementation_Evaluation.htm.
2. Locate the element: <p class="toc">
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/collections/Implementation_Evaluation.htm
- https://www.cdc.gov/pcd/issues/2015/2015_TOC.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/collections/Implementation_Evaluation.htm
- https://www.cdc.gov/pcd/issues/2015/2015_TOC.htm

---

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

**Bug ID:** `VS-e61bfb4c`  
**Pattern ID:** `VS-cb53cc4d`  
**URL:** https://www.cdc.gov/niosh/erhms/about  
**XPath / selector:** `<a class="cdc-header__title-super" href="/niosh/index.html">`  
**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:** 13141 instances; 442 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Target size is at least 44×44 CSS pixels (Enhanced). Detected by Siteimprove Alfa rule sia-r111 on 442 of 1902 scanned pages (13141 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/niosh/erhms/about.
2. Locate the element: <a class="cdc-header__title-super" href="/niosh/index.html">
3. Confirm the Siteimprove Alfa finding for rule sia-r111 against WCAG 2.5.5 Target Size (Enhanced).

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

### Affected pages
- https://www.cdc.gov/niosh/erhms/about
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm
- http://www.cdc.gov/sickle-cell/sickle-cell-trait/sickle-cell-trait-toolkit.html
- http://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-118sp.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6341a3.htm
- http://www.cdc.gov/niosh/heat-stress/about/illnesses.html
- https://www.cdc.gov/infrastructure/resources-public-health-professionals/direct-assistance.html
- https://www.cdc.gov/disability-and-health-partners/php/funding/index.html
- http://www.cdc.gov/anthrax/site.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a1.htm
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- http://www.cdc.gov/mmwr/volumes/72/wr/mm7224a2.htm?s_cid=mm7224a2_w
- https://www.cdc.gov/niosh/ocas/supsteel.html
- https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/safe-labs/php/about
- https://www.cdc.gov/liver-cancer/prevention/index.html
- http://www.cdc.gov/pcd/issues/2006/oct/06_0034_fr.htm
- http://www.cdc.gov/spanish/niosh/docs/2009-113_sp
- https://www.cdc.gov/wtc/ohi.html
- https://www.cdc.gov/mmwr/volumes/73/wr/mm7345a2.htm?s_cid=mm7345a2_w
- http://www.cdc.gov/mmwr/volumes/72/wr/mm7241a3.htm?s_cid=mm7241a3_w
- http://www.cdc.gov/tobacco/campaign/tips/quit-smoking/quit-smoking-medications/medicine-tips.html
- https://www.cdc.gov/pcd/issues/2011/jan/09_0247a.htm
- https://www.cdc.gov/tobacco/tobacco-features/military.html

…and more — 442 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/niosh/erhms/about
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm

---

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

**Bug ID:** `VS-0e1c28a6`  
**Pattern ID:** `VS-f18df681`  
**URL:** https://www.cdc.gov/niosh/docs/2020-124  
**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:** 12867 instances; 1686 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 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 1686 of 1902 scanned pages (12867 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/niosh/docs/2020-124.
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/niosh/docs/2020-124
- https://www.cdc.gov/niosh/erhms/about
- https://www.cdc.gov/cdiff
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w
- https://www.cdc.gov/pcd/issues/2012/11_0249_es.htm
- https://www.cdc.gov/nchs/products/databriefs/db363.htm
- https://www.cdc.gov/niosh/ocas/secstatus.html
- http://www.cdc.gov/advanced-molecular-detection/php/data-research/baa/2022-university-of-new-mexico.html
- http://www.cdc.gov/niosh/npg/npgd0380.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6129a4.htm?s_cid=mm6129a4_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5034a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001774.htm
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6637a6.htm?s_cid=mm6637a6_w
- https://www.cdc.gov/niosh/idlh/7723140.html
- https://www.cdc.gov/botulism/risk-factors/wound-botulism.html
- http://www.cdc.gov/mmwr/indss_2008.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5814a6.htm
- http://www.cdc.gov/sickle-cell/sickle-cell-trait/sickle-cell-trait-toolkit.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5528a6.htm
- http://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-118sp.html
- https://www.cdc.gov/niosh/research-programs/portfolio/ptd.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6341a3.htm

…and more — 1686 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/niosh/docs/2020-124
- https://www.cdc.gov/niosh/erhms/about
- https://www.cdc.gov/cdiff

---

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

**Bug ID:** `VS-22ae767f`  
**Pattern ID:** `VS-33841929`  
**URL:** https://www.cdc.gov/pcd/issues/2011/jul/10_0193_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:** 109 instances; 109 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 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 109 of 1902 scanned pages (109 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2011/jul/10_0193_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/2011/jul/10_0193_es.htm
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- http://www.cdc.gov/pcd/issues/2006/jan/05_0099_zht.htm
- http://www.cdc.gov/pcd/issues/2008/apr/07_0039_fr.htm
- http://www.cdc.gov/pcd/issues/2006/oct/06_0034_fr.htm
- http://www.cdc.gov/PCD/issues/2006/apr/05_0098_es.htm
- http://www.cdc.gov/pcd/issues/2008/jan/06_0158_zht.htm
- https://www.cdc.gov/pcd/issues/2008/oct/07_0163_zhs.htm
- http://www.cdc.gov/pcd/issues/2009/apr/08_0101.htm
- https://www.cdc.gov/pcd/issues/2009/oct/08_0147_es.htm
- https://www.cdc.gov/pcd/issues/2008/apr/07_0200_fr.htm
- https://www.cdc.gov/pcd/issues/2008/apr/07_0209_zhs.htm
- https://www.cdc.gov/pcd/issues/2011/may/10_0105_es.htm
- https://www.cdc.gov/pcd/issues/2005/nov/05_0059_fr.htm
- http://www.cdc.gov/pcd/issues/2006/jan/05_0129_fr.htm
- https://www.cdc.gov/pcd/issues/2011/may/10_0111.htm
- http://www.cdc.gov/pcd/issues/2008/apr/06_0147_fr.htm
- https://www.cdc.gov/pcd/issues/2008/oct/07_0184_zhs.htm
- https://www.cdc.gov/pcd/issues/2009/apr/08_0213_es.htm
- https://www.cdc.gov/pcd/issues/2009/apr/08_0101.htm
- https://www.cdc.gov/pcd/issues/2006/oct/06_0045_zht.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0007_fr.htm
- http://www.cdc.gov/pcd/issues/2009/apr/08_0214.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0217_es.htm
- http://www.cdc.gov/pcd/issues/2005/apr/04_0112_zhs.htm

…and more — 109 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/2011/jul/10_0193_es.htm
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- http://www.cdc.gov/pcd/issues/2006/jan/05_0099_zht.htm

---

## ARIA dialog and alertdialog nodes should have an accessible name (WCAG criterion undetermined)

**Bug ID:** `VS-bf02ad62`  
**Pattern ID:** `VS-fa724f90`  
**URL:** https://www.cdc.gov/wtc/youthcohort.html  
**XPath / selector:** `.sr-modal-dialog`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `aria-dialog-name` ([reference](https://dequeuniversity.com/rules/axe/4.12/aria-dialog-name?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 1 instances; 1 of 1902 pages affected
  
**History:** first seen 2026-W29, last seen 2026-W35 (6 weeks)

### HTML snippet
```html
<div class="sr-modal-dialog" role="dialog" tabindex="-1" style="max-width: 500px;">
```

### Description
ARIA dialog and alertdialog nodes should have an accessible name. Detected by axe-core rule aria-dialog-name on 1 of 1902 scanned pages (1 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/wtc/youthcohort.html.
2. Locate the element: .sr-modal-dialog
3. Confirm the axe-core finding for rule aria-dialog-name.

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

### Affected pages
- https://www.cdc.gov/wtc/youthcohort.html

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

### Suggested fix
**How to fix:** Give the dialog an accessible name (aria-label or aria-labelledby).

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

---

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

**Bug ID:** `VS-d57dab14`  
**Pattern ID:** `VS-d25f622d`  
**URL:** https://www.cdc.gov/pcd/issues/2012/11_0249_es.htm  
**XPath / selector:** `h4`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `heading-order` ([reference](https://dequeuniversity.com/rules/axe/4.12/heading-order?application=axeAPI))  
**Severity:** Moderate  
**Frequency:** 791 instances; 562 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### HTML snippet
```html
<h4>Shin Y. Kim, MPH; Lucinda England, MD, MSPH; William Sappenfield, MD, MPH; Hoyt G. Wilson, PhD; Connie L. Bish, PhD, MPH; Hamisu M. Salihu, MD, PhD; Andrea J. Sharma, PhD, MPH</h4>
```

### Description
Heading levels should only increase by one. Detected by axe-core rule heading-order on 562 of 1902 scanned pages (791 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2012/11_0249_es.htm.
2. Locate the element: h4
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/pcd/issues/2012/11_0249_es.htm
- https://www.cdc.gov/nchs/products/databriefs/db363.htm
- https://www.cdc.gov/niosh/ocas/secstatus.html
- http://www.cdc.gov/niosh/npg/npgd0380.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5034a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001774.htm
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6637a6.htm?s_cid=mm6637a6_w
- https://www.cdc.gov/niosh/idlh/7723140.html
- http://www.cdc.gov/mmwr/indss_2008.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5528a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/pcd/issues/2011/jul/10_0193_es.htm
- https://www.cdc.gov/mmwr/volumes/69/wr/mm6948a6.htm?s_cid=mm6948a6_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5416a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a1.htm
- https://www.cdc.gov/niosh/centers/firefighter-safety-and-health.html
- https://www.cdc.gov/mmwr/volumes/69/wr/mm6923e4.htm?s_cid=mm6923e4_w
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5133a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00039482.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00038567.htm
- http://www.cdc.gov/mmwr/volumes/72/wr/mm7224a2.htm?s_cid=mm7224a2_w
- https://www.cdc.gov/niosh/ocas/supsteel.html
- http://www.cdc.gov/niosh/npg/npgd0469.html

…and more — 562 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/pcd/issues/2012/11_0249_es.htm
- https://www.cdc.gov/nchs/products/databriefs/db363.htm
- https://www.cdc.gov/niosh/ocas/secstatus.html

---

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

**Bug ID:** `VS-ab59c819`  
**Pattern ID:** `VS-d5d82446`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.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:** 482 instances; 482 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

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

### Description
Document should have one main landmark. Detected by axe-core rule landmark-one-main on 482 of 1902 scanned pages (482 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.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/mm5711a7.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w
- https://www.cdc.gov/pcd/issues/2012/11_0249_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6129a4.htm?s_cid=mm6129a4_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5034a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001774.htm
- http://www.cdc.gov/mmwr/indss_2008.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5814a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5528a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6341a3.htm
- https://www.cdc.gov/pcd/issues/2011/jul/10_0193_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5825md.htm
- https://www.cdc.gov/flu/weekly/WeeklyArchives2023-2024/WHONPHL02.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5416a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a1.htm
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6307md.htm?s_cid=mm6307md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5133a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00039482.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00038567.htm
- http://www.cdc.gov/pcd/issues/2006/jan/05_0099_zht.htm
- http://www.cdc.gov/pcd/issues/2008/apr/07_0039_fr.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6236a1.htm

…and more — 482 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/mm5711a7.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w
- https://www.cdc.gov/pcd/issues/2012/11_0249_es.htm

---

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

**Bug ID:** `VS-26070a90`  
**Pattern ID:** `VS-8806389c`  
**URL:** https://www.cdc.gov/niosh/erhms/about  
**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:** 474 instances; 461 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

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

### Description
Landmarks should have a unique role or role/label/title (i.e. accessible name) c. Detected by axe-core rule landmark-unique on 461 of 1902 scanned pages (474 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/niosh/erhms/about.
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/niosh/erhms/about
- https://www.cdc.gov/botulism/risk-factors/wound-botulism.html
- https://www.cdc.gov/niosh/research-programs/portfolio/ptd.html
- https://www.cdc.gov/infection-control/hcp/healthcare-personnel-infrastructure-routine-practices/authors.html
- http://www.cdc.gov/niosh/heat-stress/about/illnesses.html
- https://www.cdc.gov/infrastructure/resources-public-health-professionals/direct-assistance.html
- https://www.cdc.gov/stophivtogether/library?Campaign+Resources+Name=Prescribe+HIV+Prevention&Language=English+%28US%29&Sort=Last+Updated%3A%3Adesc
- http://www.cdc.gov/std-ips/php/glossary/appendix-l.html
- https://www.cdc.gov/antibiotic-use/hcp/core-elements/outpatient-antibiotic-stewardship.html
- https://www.cdc.gov/infection-control/hcp/isolation-precautions/appendix-a-table-5.html
- https://www.cdc.gov/niosh/centers/firefighter-safety-and-health.html
- http://www.cdc.gov/parenting-toddlers/understanding-the-early-years/index.html
- https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/cholera/about/index.html
- https://www.cdc.gov/vaccines/hcp/by-disease/rotavirus.html
- https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/safe-labs/php/about
- https://www.cdc.gov/liver-cancer/prevention/index.html
- http://www.cdc.gov/cancer/es/prevention/healthy-choices.html
- http://www.cdc.gov/hygiene/about/healthy-habits-diaper-hygiene.html
- https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/hpv/vaccination-impact/index.html
- https://www.cdc.gov/cancer/features/prostate-cancer.html
- https://www.cdc.gov/united-states-cancer-statistics/technical-notes/guidance.html
- http://www.cdc.gov/family-health-history/family-health-history-and-you/family-health-history-and-pregnancy.html
- https://www.cdc.gov/disability-and-health-partners/php/partners/index.html
- https://www.cdc.gov/contraception/hcp/provider-tools/index.html
- https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/about/advisory-committee-director/reports.html

…and more — 461 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/niosh/erhms/about
- https://www.cdc.gov/botulism/risk-factors/wound-botulism.html
- https://www.cdc.gov/niosh/research-programs/portfolio/ptd.html

---

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

**Bug ID:** `VS-1c60cd4b`  
**Pattern ID:** `VS-fa44f293`  
**URL:** https://www.cdc.gov/cdiff  
**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:** 52 instances; 52 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 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 52 of 1902 scanned pages (52 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/cdiff.
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/cdiff
- https://www.cdc.gov/flu/weekly/WeeklyArchives2023-2024/WHONPHL02.html
- http://www.cdc.gov/anthrax/site.html
- https://www.cdc.gov/niosh/contact/%20
- http://www.cdc.gov/rubella/es/index.html
- https://www.cdc.gov/flu/weekly/WeeklyArchives2023-2024/WHONPHL09.html
- http://www.cdc.gov/prams/index.html
- https://www.cdc.gov/vaccines/hcp/acip-recs
- http://www.cdc.gov/fluvaxview/site.html
- https://www.cdc.gov/fluview/index.html
- http://www.cdc.gov/fluview/site.html
- https://www.cdc.gov/vitalsigns/health-worker-mental-health/index.html
- http://www.cdc.gov/nssp/index.html
- https://www.cdc.gov/hi-disease/es/la-enfermedad-por-haemophilus-influenzae.html
- https://www.cdc.gov/rubella
- https://www.cdc.gov/cancer/es/index.html
- https://www.cdc.gov/vaccine-safety?CDC_AAref_Val=https%3A%2F%2Fwww.cdc.gov%2Fvaccinesafety%2F
- http://www.cdc.gov/globalhealth
- https://www.cdc.gov/long-covid/index.html
- https://www.cdc.gov/publichealth101
- https://www.cdc.gov/flu-resources/index.html
- https://www.cdc.gov/phifp/site.html
- http://www.cdc.gov/ebola/index.html
- http://www.cdc.gov/high-blood-pressure/site.html
- http://www.cdc.gov/healthy-youth/index.html

…and more — 52 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/cdiff
- https://www.cdc.gov/flu/weekly/WeeklyArchives2023-2024/WHONPHL02.html
- http://www.cdc.gov/anthrax/site.html

---

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

**Bug ID:** `VS-fc77eefb`  
**Pattern ID:** `VS-4edfe386`  
**URL:** https://www.cdc.gov/pcd/issues/2012/11_0249_es.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:** 8 instances; 8 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 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 8 of 1902 scanned pages (8 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2012/11_0249_es.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/issues/2012/11_0249_es.htm
- https://www.cdc.gov/niosh/contact/%20
- https://www.cdc.gov/pcd/issues/2013/12_0073_es.htm
- https://www.cdc.gov/pcd/issues/2012/12_0143_es.htm
- https://www.cdc.gov/pcd/issues/2013/12_0282_es.htm
- https://www.cdc.gov/pcd/issues/2013/12_0271_es.htm
- https://www.cdc.gov/pcd/issues/2013/12_0321_es.htm
- https://www.cdc.gov/pcd/issues/2012/12_0105_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/issues/2012/11_0249_es.htm
- https://www.cdc.gov/niosh/contact/%20
- https://www.cdc.gov/pcd/issues/2013/12_0073_es.htm

---

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

**Bug ID:** `VS-363489c2`  
**Pattern ID:** `VS-0ba8ce9d`  
**URL:** http://www.cdc.gov/fluview/surveillance/2026-week-06.html  
**XPath / selector:** `tr:nth-child(1) > td[scope="row"]`  
**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:** 49 instances; 8 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### HTML snippet
```html
<td style="width: 518px;" scope="row"><strong>No. of specimens tested</strong></td>
```

### Description
scope attribute should be used correctly. Detected by axe-core rule scope-attr-valid on 8 of 1902 scanned pages (49 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/fluview/surveillance/2026-week-06.html.
2. Locate the element: tr:nth-child(1) > td[scope="row"]
3. Confirm the axe-core finding for rule scope-attr-valid.

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

### Affected pages
- http://www.cdc.gov/fluview/surveillance/2026-week-06.html
- http://www.cdc.gov/fluview/surveillance/2026-week-17.html
- https://www.cdc.gov/fluview/surveillance/2025-week-18.html
- https://www.cdc.gov/pcd/issues/2017/16_0540.htm
- https://www.cdc.gov/pcd/issues/2015/14_0479.htm
- https://www.cdc.gov/fluview/surveillance/2025-week-29.html
- https://www.cdc.gov/fluview/surveillance/2026-week-03.html
- http://www.cdc.gov/fluview/surveillance/2025-week-30.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/scope-attr-valid?application=axeAPI

### Example pages
- http://www.cdc.gov/fluview/surveillance/2026-week-06.html
- http://www.cdc.gov/fluview/surveillance/2026-week-17.html
- https://www.cdc.gov/fluview/surveillance/2025-week-18.html

---

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

**Bug ID:** `VS-b10aed7f`  
**Pattern ID:** `VS-4fac2f41`  
**URL:** https://www.cdc.gov/niosh/docs/2020-124  
**XPath / selector:** `img[role="presentation"]`  
**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:** 97 instances; 88 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### HTML snippet
```html
<img src="/niosh/docs/2020-124/images/2020-124.jpg" alt="Immediately Dangerous to Life or Health (IDLH) Value Profile: Chlorine Trifluoride (CAS® No. 7790-91-2)" role="presentation">
```

### Description
ARIA role should be appropriate for the element. Detected by axe-core rule aria-allowed-role on 88 of 1902 scanned pages (97 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/niosh/docs/2020-124.
2. Locate the element: img[role="presentation"]
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/niosh/docs/2020-124
- http://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-118sp.html
- http://www.cdc.gov/niosh/publications/numbered/2019-128.html
- https://www.cdc.gov/niosh/docs/2007-107
- http://www.cdc.gov/niosh/publications/numbered/2007-131.html
- http://www.cdc.gov/niosh/docs/2022-104
- http://www.cdc.gov/spanish/niosh/docs/2009-113_sp
- https://www.cdc.gov/wtc/ohi.html
- http://www.cdc.gov/niosh/publications/hcp/numbered/2024-109.html
- http://www.cdc.gov/niosh/docs/2016-151/default.html
- https://www.cdc.gov/niosh/docs/2022-125
- http://www.cdc.gov/niosh/docs/wp-solutions/2013-143
- http://www.cdc.gov/niosh/docs/2014-110
- https://www.cdc.gov/niosh/docs/2013-119
- http://www.cdc.gov/niosh/publications/numbered/2013-130.html
- https://www.cdc.gov/niosh/publications/es/numbered/2008-112sp.html
- http://www.cdc.gov/niosh/publications/numbered/2022-123.html
- http://www.cdc.gov/niosh/docs/2021-100
- http://www.cdc.gov/niosh/publications/numbered/2022-124.html
- https://www.cdc.gov/niosh/docs/2017-137
- https://www.cdc.gov/niosh/docs/2005-142
- https://www.cdc.gov/niosh/docs/2020-106/default.html
- https://www.cdc.gov/vitalsigns/health-worker-mental-health/index.html
- http://www.cdc.gov/spanish/niosh/docs/2002-101_sp
- https://www.cdc.gov/niosh/publications/es/numbered/2001-109sp.html

…and more — 88 pages total ([download CSV](csv/axe-core__aria-allowed-role.csv)).

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

### Suggested fix
**How to fix:** Remove or change the ARIA role — it isn't allowed on this element type.

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

### Example pages
- https://www.cdc.gov/niosh/docs/2020-124
- http://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-118sp.html
- http://www.cdc.gov/niosh/publications/numbered/2019-128.html

---

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

**Bug ID:** `VS-d1862667`  
**Pattern ID:** `VS-d69fc059`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5825md.htm  
**XPath / selector:** `.story:nth-child(31) > .data-table > tbody > tr:nth-child(2) > .end-table-column-head[colspan="5"]`  
**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:** 133 instances; 30 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### HTML snippet
```html
<th class="end-table-column-head" scope="col" colspan="5">
							</th>
```

### Description
Table header text should not be empty. Detected by axe-core rule empty-table-header on 30 of 1902 scanned pages (133 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5825md.htm.
2. Locate the element: .story:nth-child(31) > .data-table > tbody > tr:nth-child(2) > .end-table-column-head[colspan="5"]
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/mm5825md.htm
- http://www.cdc.gov/nwss/rv/COVID19-national-data.html
- https://www.cdc.gov/nchs/data/hestat/life-expectancy/life-expectancy-2018.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6020md.htm?s_cid=mm6020md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5846a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6021a4.htm?s_cid=mm6021a4_w
- http://www.cdc.gov/fluview/surveillance/2026-week-06.html
- http://www.cdc.gov/fluview/surveillance/2026-week-17.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5901md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6122md.htm?s_cid=mm6122md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6006md.htm?s_cid=mm6006md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5925md.htm?s_cid=mm5925md_w
- https://www.cdc.gov/fluview/surveillance/2025-week-18.html
- https://www.cdc.gov/tb/statistics/reports/2022/table32.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6151md.htm?s_cid=mm6151md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6121md.htm?s_cid=mm6121md_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6011a2.htm?s_cid=mm6011a2_w
- https://www.cdc.gov/pcd/issues/2014/14_0329.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5848a1_ensp.htm
- https://www.cdc.gov/asthma/nhis/2015/table5-1.htm
- https://www.cdc.gov/fluview/surveillance/2025-week-29.html
- https://www.cdc.gov/asthma/nhis/07/table1-1.htm
- https://www.cdc.gov/mmwr/volumes/65/wr/mm6512a4.htm?s_cid=mm6512a4_w
- http://www.cdc.gov/childvaxview/publications-resources/vaccine-coverage-among-children-usapi.html
- https://www.cdc.gov/asthma/nhis/2014/table2-1.htm

…and more — 30 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/mm5825md.htm
- http://www.cdc.gov/nwss/rv/COVID19-national-data.html
- https://www.cdc.gov/nchs/data/hestat/life-expectancy/life-expectancy-2018.htm

---

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

**Bug ID:** `VS-a795926c`  
**Pattern ID:** `VS-0066c67d`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5416a4.htm  
**XPath / selector:** `h3:nth-child(45)`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `empty-heading` ([reference](https://dequeuniversity.com/rules/axe/4.12/empty-heading?application=axeAPI))  
**Severity:** Minor  
**Frequency:** 27 instances; 15 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### HTML snippet
```html
<h3>
        </h3>
```

### Description
Headings should not be empty. Detected by axe-core rule empty-heading on 15 of 1902 scanned pages (27 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5416a4.htm.
2. Locate the element: h3:nth-child(45)
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/preview/mmwrhtml/mm5416a4.htm
- http://www.cdc.gov/dpdx/monthlyCaseStudies/2020/index.html
- https://www.cdc.gov/dpdx/monthlyCaseStudies/2018/index.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5410a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5129a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5553a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5543a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5240a4.htm
- https://www.cdc.gov/mmwR/preview/mmwrhtml/mm5325a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5423a1.htm
- https://www.cdc.gov/wtc/interest.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5247a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5248a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5643a1.htm
- https://www.cdc.gov/mmwR/preview/mmwrhtml/mm5646a4.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 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/preview/mmwrhtml/mm5416a4.htm
- http://www.cdc.gov/dpdx/monthlyCaseStudies/2020/index.html
- https://www.cdc.gov/dpdx/monthlyCaseStudies/2018/index.html

---

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

**Bug ID:** `VS-7a43f67f`  
**Pattern ID:** `VS-f528778d`  
**URL:** http://www.cdc.gov/ardi  
**XPath / selector:** `img[alt="Help"]`  
**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:** 3 instances; 2 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (11 weeks)

### HTML snippet
```html
<img alt="Help" src="../images/help.png" style="padding-right:4px;">
```

### Description
Alternative text of images should not be repeated as text. Detected by axe-core rule image-redundant-alt on 2 of 1902 scanned pages (3 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/ardi.
2. Locate the element: img[alt="Help"]
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/ardi
- http://www.cdc.gov/tobacco/campaign/tips/diseases/index.html

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

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

### Example pages
- http://www.cdc.gov/ardi
- http://www.cdc.gov/tobacco/campaign/tips/diseases/index.html

---

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

**Bug ID:** `VS-acb4ff77`  
**Pattern ID:** `VS-c18be945`  
**URL:** https://www.cdc.gov/niosh/erhms/about  
**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:** 4672 instances; 314 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Scrolling content can be accessed by keyboard. Detected by Siteimprove Alfa rule sia-r57 on 314 of 1902 scanned pages (4672 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/niosh/erhms/about.
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/niosh/erhms/about
- http://www.cdc.gov/sickle-cell/sickle-cell-trait/sickle-cell-trait-toolkit.html
- http://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-118sp.html
- http://www.cdc.gov/niosh/heat-stress/about/illnesses.html
- https://www.cdc.gov/infrastructure/resources-public-health-professionals/direct-assistance.html
- https://www.cdc.gov/disability-and-health-partners/php/funding/index.html
- http://www.cdc.gov/anthrax/site.html
- http://www.cdc.gov/mmwr/volumes/72/wr/mm7224a2.htm?s_cid=mm7224a2_w
- https://www.cdc.gov/niosh/ocas/supsteel.html
- https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/safe-labs/php/about
- https://www.cdc.gov/liver-cancer/prevention/index.html
- http://www.cdc.gov/spanish/niosh/docs/2009-113_sp
- https://www.cdc.gov/wtc/ohi.html
- https://www.cdc.gov/mmwr/volumes/73/wr/mm7345a2.htm?s_cid=mm7345a2_w
- http://www.cdc.gov/mmwr/volumes/72/wr/mm7241a3.htm?s_cid=mm7241a3_w
- http://www.cdc.gov/tobacco/campaign/tips/quit-smoking/quit-smoking-medications/medicine-tips.html
- https://www.cdc.gov/tobacco/tobacco-features/military.html
- http://www.cdc.gov/niosh/docs/2016-151/default.html
- https://www.cdc.gov/phlp/php/about/competencies-for-legal-evaluation-studies.html
- https://www.cdc.gov/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10313
- https://www.cdc.gov/active-people-healthy-nation/php/tools/arts-and-culture.html
- http://www.cdc.gov/nchs/fastats/asthma.htm
- https://www.cdc.gov/mosquitoes/mosquito-control/index.html
- https://www.cdc.gov/mmwr/volumes/67/wr/mm6736a7.htm?s_cid=mm6736a7_w
- https://www.cdc.gov/mmwr/indss_2025.html

…and more — 314 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/niosh/erhms/about
- http://www.cdc.gov/sickle-cell/sickle-cell-trait/sickle-cell-trait-toolkit.html
- http://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-118sp.html

---

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

**Bug ID:** `VS-7459ba27`  
**Pattern ID:** `VS-e05344b9`  
**URL:** https://www.cdc.gov/niosh/erhms/about  
**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:** 222 instances; 217 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
aria attribute is permitted for element role. Detected by Siteimprove Alfa rule sia-r18 on 217 of 1902 scanned pages (222 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/niosh/erhms/about.
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/niosh/erhms/about
- http://www.cdc.gov/sickle-cell/sickle-cell-trait/sickle-cell-trait-toolkit.html
- http://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-118sp.html
- http://www.cdc.gov/niosh/heat-stress/about/illnesses.html
- https://www.cdc.gov/infrastructure/resources-public-health-professionals/direct-assistance.html
- https://www.cdc.gov/disability-and-health-partners/php/funding/index.html
- http://www.cdc.gov/anthrax/site.html
- https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/safe-labs/php/about
- https://www.cdc.gov/liver-cancer/prevention/index.html
- http://www.cdc.gov/spanish/niosh/docs/2009-113_sp
- https://www.cdc.gov/tobacco/tobacco-features/military.html
- http://www.cdc.gov/niosh/docs/2016-151/default.html
- https://www.cdc.gov/phlp/php/about/competencies-for-legal-evaluation-studies.html
- https://www.cdc.gov/active-people-healthy-nation/php/tools/arts-and-culture.html
- https://www.cdc.gov/mosquitoes/mosquito-control/index.html
- https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/meningococcal/vaccines/index.html
- http://www.cdc.gov/plague/healthcare/clinicians.html
- http://www.cdc.gov/niosh/docs/video/2024-120
- http://www.cdc.gov/restaurant-food-safety/communication-resources/tips-for-dining-out.html
- https://www.cdc.gov/balamuthia/es/about/index.html
- https://www.cdc.gov/science-ambassador/applicants/application.html
- https://www.cdc.gov/vaccines/hcp/acip-recs/vacc-specific/covid-19.html
- https://www.cdc.gov/niosh/aviation/prevention/aircrew-pesticides.html
- http://www.cdc.gov/sti-funding/php/about/index.html
- http://www.cdc.gov/prams/index.html

…and more — 217 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/niosh/erhms/about
- http://www.cdc.gov/sickle-cell/sickle-cell-trait/sickle-cell-trait-toolkit.html
- http://www.cdc.gov/niosh/publications/es/hcp/numbered/2012-118sp.html

---

## Headings are structured hierarchically (WCAG criterion undetermined)

**Bug ID:** `VS-889a8d83`  
**Pattern ID:** `VS-f054f4a4`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm  
**XPath / selector:** `<h3>`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r53` ([reference](https://alfa.siteimprove.com/rules/sia-r53))  
**Severity:** Moderate  
**Frequency:** 203 instances; 148 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Headings are structured hierarchically. Detected by Siteimprove Alfa rule sia-r53 on 148 of 1902 scanned pages (203 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm.
2. Locate the element: <h3>
3. Confirm the Siteimprove Alfa finding for rule sia-r53.

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

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a1.htm
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- http://www.cdc.gov/mmwr/volumes/72/wr/mm7224a2.htm?s_cid=mm7224a2_w
- https://www.cdc.gov/niosh/ocas/supsteel.html
- http://www.cdc.gov/pcd/issues/2006/oct/06_0034_fr.htm
- https://www.cdc.gov/mmwr/volumes/73/wr/mm7345a2.htm?s_cid=mm7345a2_w
- http://www.cdc.gov/mmwr/volumes/72/wr/mm7241a3.htm?s_cid=mm7241a3_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000635.htm
- https://www.cdc.gov/niosh/npg/npgd0156.html
- https://www.cdc.gov/pcd/issues/2015/14_0439.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5650a1.htm
- https://www.cdc.gov/pcd/issues/2011/may/10_0105_es.htm
- https://www.cdc.gov/nchs/products/databriefs/db461.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5424a3.htm
- https://www.cdc.gov/pcd/issues/2011/may/10_0111.htm
- https://www.cdc.gov/niosh/npg/npgd0235.html
- https://www.cdc.gov/pcd/issues/2008/oct/07_0184_zhs.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5729a2.htm
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6605a1.htm?s_cid=mm6605a1_w
- https://www.cdc.gov/pcd/issues/2009/apr/08_0213_es.htm
- https://www.cdc.gov/niosh/ocas/drmethods.html
- https://www.cdc.gov/niosh/npg/npgd0124.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5515a5.htm

…and more — 148 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/mmwr/preview/mmwrhtml/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a1.htm

---

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

**Bug ID:** `VS-5c67d19d`  
**Pattern ID:** `VS-3d033717`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.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:** 112 instances; 112 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
No obsolete or deprecated elements are used. Detected by Siteimprove Alfa rule sia-r70 on 112 of 1902 scanned pages (112 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00053300.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/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a1.htm
- http://www.cdc.gov/PCD/issues/2006/apr/05_0126_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/06_0034_fr.htm
- https://www.cdc.gov/pcd/issues/2011/jan/09_0247a.htm
- https://www.cdc.gov/mmwR/preview/mmwrhtml/mm5931a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000635.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6001a6.htm?s_cid=mm6001a6_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00017530.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5650a1.htm
- https://www.cdc.gov/pcd/issues/2011/may/10_0105_es.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5424a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5603md.htm
- https://www.cdc.gov/pcd/issues/2011/may/10_0111.htm
- https://www.cdc.gov/pcd/issues/2008/oct/07_0184_zhs.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5729a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6015a2.htm?s_cid=mm6015a2_w
- https://www.cdc.gov/pcd/issues/2009/apr/08_0213_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050901.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5515a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5714a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4844md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6039a5.htm?s_cid=mm6039a5_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5646a2.htm

…and more — 112 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/00053300.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a1.htm

---

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

**Bug ID:** `VS-55ffdfc1`  
**Pattern ID:** `VS-04a9d28c`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.htm  
**XPath / selector:** `body`  
**WCAG SC:** _undetermined_  
**Rule:** deprecated-html — `presentational-attr`  
**Severity:** Moderate  
**Frequency:** 9004 instances; 56 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### HTML snippet
```html
<body bgcolor="#ffffff" leftmargin="0" topmargin="0" marginheight="0" marginwidth="0" class=" dmat-load-complete">
<!-- report header -->
<!--webbot bot="Include" U-Include="../../headers_footers/repo
```

### Description
Presentational attribute (use CSS). Detected by deprecated-html rule presentational-attr on 56 of 1902 scanned pages (9004 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.htm.
2. Locate the element: body
3. Confirm the deprecated-html finding for rule presentational-attr.

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

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5814a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5528a6.htm
- https://www.cdc.gov/mmwr/volumes/69/wr/mm6923e4.htm?s_cid=mm6923e4_w
- https://www.cdc.gov/breastfeeding-data/mpinc/state-reports.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00020270.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00054921.htm
- https://www.cdc.gov/mmwr/volumes/65/wr/mm655051a1.htm?s_cid=mm655051a1_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4842a3.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4907a2.htm
- https://www.cdc.gov/mmwr/volumes/75/wr/mm7524a1.htm
- https://www.cdc.gov/pcd/issues/2009/apr/08_0213_es.htm
- https://www.cdc.gov/pcd/issues/2009/apr/08_0101.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00015601.htm
- https://www.cdc.gov/pcd/issues/2012/12_0074.htm
- http://www.cdc.gov/pcd/issues/2009/apr/08_0214.htm
- http://www.cdc.gov/pcd/issues/2005/apr/04_0112_zhs.htm
- https://www.cdc.gov/mmwr/volumes/71/rr/rr7104a1.htm
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6604a4.htm?s_cid=mm6604a4_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00056024.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001086.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5017a3.htm
- https://www.cdc.gov/pcd/issues/2009/apr/08_0068_es.htm
- https://www.cdc.gov/pcd/issues/2006/oct/06_0030_fr.htm
- https://www.cdc.gov/pcd/issues/2018/17_0368.htm

…and more — 56 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/preview/mmwrhtml/mm5711a7.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5814a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5528a6.htm

---

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

**Bug ID:** `VS-5b0b44af`  
**Pattern ID:** `VS-7118fead`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w  
**XPath / selector:** `{"type":"document","children":[{"type":"type","name":"html","publicId":"-//W3C//`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r61` ([reference](https://alfa.siteimprove.com/rules/sia-r61))  
**Severity:** Moderate  
**Frequency:** 43 instances; 43 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Form field label is visible. Detected by Siteimprove Alfa rule sia-r61 on 43 of 1902 scanned pages (43 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w.
2. Locate the element: {"type":"document","children":[{"type":"type","name":"html","publicId":"-//W3C//
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/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6341a3.htm
- http://www.cdc.gov/anthrax/site.html
- https://www.cdc.gov/mmwR/preview/mmwrhtml/mm5931a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6001a6.htm?s_cid=mm6001a6_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6440a10.htm?s_cid=mm6440a10_w
- http://www.cdc.gov/prams/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6433a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6015a2.htm?s_cid=mm6015a2_w
- http://www.cdc.gov/fluvaxview/site.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6039a5.htm?s_cid=mm6039a5_w
- https://www.cdc.gov/hi-disease/es/la-enfermedad-por-haemophilus-influenzae.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5920a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6018a1.htm?s_cid=mm6018a1_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6238a2.htm
- https://www.cdc.gov/vaccine-safety?CDC_AAref_Val=https%3A%2F%2Fwww.cdc.gov%2Fvaccinesafety%2F
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6108a3.htm?s_cid=mm6108a3_w
- https://www.cdc.gov/pcd/issues/2012/11_0086a.htm
- https://www.cdc.gov/flu-resources/index.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6011a2.htm?s_cid=mm6011a2_w
- https://www.cdc.gov/pcd/issues/2012/12_0143_es.htm
- http://www.cdc.gov/salmonella/site.html
- http://www.cdc.gov/nis/es/site.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6439a1.htm?s_cid=mm6439a1_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6324a5.htm?s_cid=mm6324a5_w

…and more — 43 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/mmwr/preview/mmwrhtml/mm6439a10.htm?s_cid=mm6439a10_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6341a3.htm
- http://www.cdc.gov/anthrax/site.html

---

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

**Bug ID:** `VS-1ece730c`  
**Pattern ID:** `VS-91d2294a`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.htm  
**XPath / selector:** `font`  
**WCAG SC:** _undetermined_  
**Rule:** deprecated-html — `font-element`  
**Severity:** Moderate  
**Frequency:** 246 instances; 32 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 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 32 of 1902 scanned pages (246 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.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/mm5711a7.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6129a4.htm?s_cid=mm6129a4_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5814a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5528a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00020270.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00054921.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4842a3.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4907a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00015601.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00056024.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001086.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5017a3.htm
- https://www.cdc.gov/pcd/issues/2006/oct/06_0030_fr.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6108a3.htm?s_cid=mm6108a3_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5543a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4947a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5240a4.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038243.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5145a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5423a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5738a8.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00056796.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5037a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/ss6207a1.htm?s_cid=ss6207a1_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023040.htm

…and more — 32 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/mm5711a7.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6129a4.htm?s_cid=mm6129a4_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5814a6.htm

---

## Table header has scope (WCAG criterion undetermined)

**Bug ID:** `VS-26dbd781`  
**Pattern ID:** `VS-2cd767ca`  
**URL:** https://www.cdc.gov/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10313  
**XPath / selector:** `<h2>`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r78` ([reference](https://alfa.siteimprove.com/rules/sia-r78))  
**Severity:** Moderate  
**Frequency:** 28 instances; 26 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Table header has scope. Detected by Siteimprove Alfa rule sia-r78 on 26 of 1902 scanned pages (28 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10313.
2. Locate the element: <h2>
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/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10313
- https://www.cdc.gov/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10149
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6605a1.htm?s_cid=mm6605a1_w
- http://www.cdc.gov/fluvaxview/site.html
- https://www.cdc.gov/niosh/docket/archive/docket072.html
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6604a4.htm?s_cid=mm6604a4_w
- http://www.cdc.gov/mmwr/volumes/71/wr/mm7145a4.htm?s_cid=mm7145a4_w
- https://www.cdc.gov/pcd/issues/2012/11_0086a.htm
- https://cdc.gov/surv-manual/site.html
- https://www.cdc.gov/pcd/issues/2012/12_0143_es.htm
- https://www.cdc.gov/mmwr/volumes/65/wr/mm6531a4.htm?s_cid=mm6531a4_w
- http://www.cdc.gov/heads-up/hcp/clinical-guidance/index.html
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6605a4.htm?s_cid=mm6605a4_w
- https://www.cdc.gov/mmwr/volumes/70/wr/mm7037a4.htm?s_cid=mm7037a4_w
- http://www.cdc.gov/nis/es/site.html
- https://www.cdc.gov/pcd/issues/2013/12_0282_es.htm
- https://www.cdc.gov/mmwr/volumes/65/wr/mm6512a4.htm?s_cid=mm6512a4_w
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6643a2.htm?s_cid=mm6643a2_w
- https://www.cdc.gov/pcd/issues/2013/12_0271_es.htm
- https://www.cdc.gov/pcd/issues/2013/12_0266a.htm
- http://www.cdc.gov/acip/site.html
- http://www.cdc.gov/surv-manual/site.html
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6645a1.htm?s_cid=mm6645a1_w
- http://www.cdc.gov/mmwr/volumes/66/ss/ss6602a1.htm?s_cid=ss6602a1_w
- https://www.cdc.gov/natural-disasters/es/site.html

…and more — 26 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/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10313
- https://www.cdc.gov/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10149
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6605a1.htm?s_cid=mm6605a1_w

---

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

**Bug ID:** `VS-18df7b79`  
**Pattern ID:** `VS-7845739d`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.htm  
**XPath / selector:** `big`  
**WCAG SC:** _undetermined_  
**Rule:** deprecated-html — `big-element`  
**Severity:** Moderate  
**Frequency:** 33 instances; 24 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

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

### Description
Obsolete <big> element (use CSS). Detected by deprecated-html rule big-element on 24 of 1902 scanned pages (33 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5711a7.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/mm5711a7.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5528a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00020270.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00054921.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4842a3.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4907a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00015601.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00056024.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001086.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5017a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5543a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4947a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5240a4.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038243.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5145a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5423a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00056796.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5037a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00023040.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000228.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00056779.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5042a6.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00047208.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5440a4.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/mmwr/preview/mmwrhtml/mm5711a7.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5528a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00020270.htm

---

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

**Bug ID:** `VS-f9a1f285`  
**Pattern ID:** `VS-20060f39`  
**URL:** https://www.cdc.gov/pcd/issues/2009/apr/08_0213_es.htm  
**XPath / selector:** `center`  
**WCAG SC:** _undetermined_  
**Rule:** deprecated-html — `center-element`  
**Severity:** Moderate  
**Frequency:** 24 instances; 12 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 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 12 of 1902 scanned pages (24 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2009/apr/08_0213_es.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/2009/apr/08_0213_es.htm
- https://www.cdc.gov/pcd/issues/2009/apr/08_0101.htm
- http://www.cdc.gov/pcd/issues/2009/apr/08_0214.htm
- http://www.cdc.gov/pcd/issues/2005/apr/04_0112_zhs.htm
- https://www.cdc.gov/pcd/issues/2009/apr/08_0068_es.htm
- https://www.cdc.gov/pcd/issues/2006/oct/06_0030_fr.htm
- https://www.cdc.gov/pcd/issues/2011/jan/09_0212.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0263_es.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0237_zhs.htm
- http://www.cdc.gov/pcd/issues/2008/apr/06_0122_zht.htm
- https://www.cdc.gov/pcd/issues/2009/apr/08_0070.htm
- https://www.cdc.gov/pcd/issues/2011/nov/11_0032_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/2009/apr/08_0213_es.htm
- https://www.cdc.gov/pcd/issues/2009/apr/08_0101.htm
- http://www.cdc.gov/pcd/issues/2009/apr/08_0214.htm

---

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

**Bug ID:** `VS-c67f13fd`  
**Pattern ID:** `VS-f2542d87`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.htm  
**XPath / selector:** `<pre>`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r79` ([reference](https://alfa.siteimprove.com/rules/sia-r79))  
**Severity:** Moderate  
**Frequency:** 27 instances; 5 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Duplicate role landmark is labeled. Detected by Siteimprove Alfa rule sia-r79 on 5 of 1902 scanned pages (27 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4830a2.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/mm4830a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4844md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00054265.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00050145.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00025228.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/mm4830a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4844md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00054265.htm

---

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

**Bug ID:** `VS-a7543a0c`  
**Pattern ID:** `VS-3fb891c5`  
**URL:** https://www.cdc.gov/pcd/issues/2012/11_0086a.htm  
**XPath / selector:** `<fieldset>`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r60` ([reference](https://alfa.siteimprove.com/rules/sia-r60))  
**Severity:** Moderate  
**Frequency:** 5 instances; 5 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Input purpose can be determined. Detected by Siteimprove Alfa rule sia-r60 on 5 of 1902 scanned pages (5 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2012/11_0086a.htm.
2. Locate the element: <fieldset>
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/pcd/issues/2012/11_0086a.htm
- https://www.cdc.gov/pcd/issues/2012/12_0143_es.htm
- https://www.cdc.gov/pcd/issues/2013/12_0282_es.htm
- https://www.cdc.gov/pcd/issues/2013/12_0271_es.htm
- https://www.cdc.gov/pcd/issues/2013/12_0266a.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-r60

### Example pages
- https://www.cdc.gov/pcd/issues/2012/11_0086a.htm
- https://www.cdc.gov/pcd/issues/2012/12_0143_es.htm
- https://www.cdc.gov/pcd/issues/2013/12_0282_es.htm

---

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

**Bug ID:** `VS-0501499e`  
**Pattern ID:** `VS-aa242c2d`  
**URL:** https://www.cdc.gov/wtc/ohi.html  
**XPath / selector:** `{"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r87` ([reference](https://alfa.siteimprove.com/rules/sia-r87))  
**Severity:** Moderate  
**Frequency:** 3 instances; 3 of 1902 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W35 (10 weeks)

### Description
First focusable element is link to main content. Detected by Siteimprove Alfa rule sia-r87 on 3 of 1902 scanned pages (3 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/wtc/ohi.html.
2. Locate the element: {"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys
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/wtc/ohi.html
- https://www.cdc.gov/wtc/interest.html
- https://www.cdc.gov/wtc/youthcohort.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

### Example pages
- https://www.cdc.gov/wtc/ohi.html
- https://www.cdc.gov/wtc/interest.html
- https://www.cdc.gov/wtc/youthcohort.html

---

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

**Bug ID:** `VS-f5454555`  
**Pattern ID:** `VS-3d3b2245`  
**URL:** https://www.cdc.gov/cannabis/es/about/las-leyes-estatales-sobre-el-cannabis-medicinal.html  
**XPath / selector:** `<div role="region" tabindex="0" class="map-container visualization-container bottom map us outline-none position-relative">`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r40` ([reference](https://alfa.siteimprove.com/rules/sia-r40))  
**Severity:** Moderate  
**Frequency:** 3 instances; 3 of 1902 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W35 (12 weeks)

### Description
Tables are used for tabular data, not layout. Detected by Siteimprove Alfa rule sia-r40 on 3 of 1902 scanned pages (3 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/cannabis/es/about/las-leyes-estatales-sobre-el-cannabis-medicinal.html.
2. Locate the element: <div role="region" tabindex="0" class="map-container visualization-container bottom map us outline-none position-relative">
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/cannabis/es/about/las-leyes-estatales-sobre-el-cannabis-medicinal.html
- https://www.cdc.gov/molluscum-contagiosum/es/about/index.html
- https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/listeria/outbreaks/delimeats-7-24/locations.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-r40

### Example pages
- https://www.cdc.gov/cannabis/es/about/las-leyes-estatales-sobre-el-cannabis-medicinal.html
- https://www.cdc.gov/molluscum-contagiosum/es/about/index.html
- https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/listeria/outbreaks/delimeats-7-24/locations.html

---

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

**Bug ID:** `VS-4bee4a46`  
**Pattern ID:** `VS-7fbb8b20`  
**URL:** https://www.cdc.gov/mmwr/volumes/66/wr/mm6620md.htm?s_cid=mm6620md_w  
**XPath / selector:** `{"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r59` ([reference](https://alfa.siteimprove.com/rules/sia-r59))  
**Severity:** Moderate  
**Frequency:** 1 instances; 1 of 1902 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W35 (10 weeks)

### Description
Element with orientation is not locked. Detected by Siteimprove Alfa rule sia-r59 on 1 of 1902 scanned pages (1 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/volumes/66/wr/mm6620md.htm?s_cid=mm6620md_w.
2. Locate the element: {"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys
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/mmwr/volumes/66/wr/mm6620md.htm?s_cid=mm6620md_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-r59

---

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

**Bug ID:** `VS-f542e22b`  
**Pattern ID:** `VS-e43903a1`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6349a8.htm  
**XPath / selector:** `<span class="Annotation-reference" style="font-size:0.73em;">`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r75` ([reference](https://alfa.siteimprove.com/rules/sia-r75))  
**Severity:** Moderate  
**Frequency:** 1 instances; 1 of 1902 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W35 (10 weeks)

### Description
Form field error is identified and described. Detected by Siteimprove Alfa rule sia-r75 on 1 of 1902 scanned pages (1 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6349a8.htm.
2. Locate the element: <span class="Annotation-reference" style="font-size:0.73em;">
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/mm6349a8.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