# Accessibility bug reports — www.cdc.gov, week 2026-W37

74 issue type(s) from 3330 pages scanned. Generated 2026-09-11 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-94fb7c87`  
**Pattern ID:** `VS-179ad9b3`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.htm  
**XPath / selector:** `<a href="#content_area">`  
**WCAG SC:** 2.5.8 — Target Size (Minimum) (Level AA)  
**Rule:** Siteimprove Alfa — `sia-r113` ([reference](https://alfa.siteimprove.com/rules/sia-r113))  
**Severity:** Moderate  
**Frequency:** 2384 instances; 252 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Target size is at least 24×24 CSS pixels or has spacing (Minimum). Detected by Siteimprove Alfa rule sia-r113 on 252 of 3330 scanned pages (2384 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.htm.
2. Locate the element: <a href="#content_area">
3. Confirm the Siteimprove Alfa finding for rule sia-r113 against WCAG 2.5.8 Target Size (Minimum).

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

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5026md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001815.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00015081.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5846a5.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00021729.htm
- https://www.cdc.gov/hepatitis/statistics/2020surveillance/hepatitis-b/figure-2.3.htm
- http://www.cdc.gov/nchs/fastats/liver-disease.htm
- http://www.cdc.gov/pcd/issues/2010/may/09_0130_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/05_0009_fr.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5509a5.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038048.htm
- http://www.cdc.gov/pcd/issues/2009/jan/08_0006_es.htm
- https://www.cdc.gov/niosh/ocas/gjoo.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6023a5.htm?s_cid=mm6023a5_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038177.htm
- https://www.cdc.gov/mmwR/preview/mmwrhtml/rr5707a1.htm
- https://www.cdc.gov/pcd/issues/2006/jan/05_0129_es.htm
- https://www.cdc.gov/dpdx/monthlycasestudies/2018/case459.html
- https://www.cdc.gov/niosh/learning/publichealthburnoutprevention/module-4/outline.html
- https://www.cdc.gov/pcd/issues/2011/jul/10_0135.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000620.htm
- https://www.cdc.gov/niosh/ocas/ocasdose.html

…and more — 252 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/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5026md.htm

---

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

**Bug ID:** `VS-a5f105cc`  
**Pattern ID:** `VS-f7dba940`  
**URL:** http://www.cdc.gov/rdc  
**XPath / selector:** `<a href="/rdc/" class="cdc-footer__super-title" aria-label="Research Data Center">`  
**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:** 141 instances; 82 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Accessible name of link or button matches visible label. Detected by Siteimprove Alfa rule sia-r14 on 82 of 3330 scanned pages (141 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/rdc.
2. Locate the element: <a href="/rdc/" class="cdc-footer__super-title" aria-label="Research Data Center">
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/rdc
- https://www.cdc.gov/clinical-standardization-programs/php/cvd/index.html
- https://www.cdc.gov/hepatitis-surveillance-2023/appendix/table-5-4.html
- https://www.cdc.gov/right-to-know/es/php/campaign-home/index.html
- https://www.cdc.gov/tobacco/es/tobacco-features/spanish-world-no-tobacco-day.html
- http://www.cdc.gov/tb/es/risk-factors/factores-de-riesgo.html
- https://www.cdc.gov/niosh/publications/es/numbered/2010-138sp.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/measles/es/data-research/index.html
- https://www.cdc.gov/niosh/publications/es/numbered/2009-112sp.html
- https://www.cdc.gov/rdc/other-restricted-data/index.html
- https://www.cdc.gov/bird-flu/video-series/get-h5n1-bird-flu-spanish.html
- http://www.cdc.gov/skin-cancer/es/sun-safety/index.html
- http://www.cdc.gov/ncird/press-form/index.html
- http://www.cdc.gov/cholera/es/hcp/case-definition/index.html
- https://www.cdc.gov/pertussis/es/signs-symptoms/sintomas-de-la-tosferina.html
- http://www.cdc.gov/media/es/releases/2026/los-cdc-activan-su-centro-de-operaciones-de-emergencia-para-la-respuesta-al-brote-de-gusano.html
- https://www.cdc.gov/hepatitis-a/public-resources/outbreak-poster-peh.html
- http://www.cdc.gov/cholera/es/php/laboratories/cholera-clinical-detection.html
- https://www.cdc.gov/hepatitis-surveillance-2021/hepatitis-c/table-3-6.html
- https://www.cdc.gov/comprehensive-cancer-control/success-stories/tribal-member-colorectal-screening-covid19.html
- https://www.cdc.gov/spanish/niosh/hhe/leyes.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/ecoli/outbreaks/rawcheese-03-26/timeline.html
- http://www.cdc.gov/chickenpox/hcp/communication-resources/varicella-diagnosis-fact-sheet.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/foodnet/reports/cidt.html
- https://www.cdc.gov/nccdphp/dnpao/state-local-programs/crosscutting-resources.html

…and more — 82 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/rdc
- https://www.cdc.gov/clinical-standardization-programs/php/cvd/index.html
- https://www.cdc.gov/hepatitis-surveillance-2023/appendix/table-5-4.html

---

## Images must have alternative text (WCAG 1.1.1)

**Bug ID:** `VS-271c9983`  
**Pattern ID:** `VS-9074b4dd`  
**URL:** https://www.cdc.gov/pcd/issues/2010/jul/09_0246.htm  
**XPath / selector:** `img[height="8"][alt=" "][width="140"]`  
**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:** 6794 instances; 596 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

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

### Description
Images must have alternative text. Detected by axe-core rule image-alt on 596 of 3330 scanned pages (6794 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2010/jul/09_0246.htm.
2. Locate the element: img[height="8"][alt=" "][width="140"]
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/pcd/issues/2010/jul/09_0246.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026182.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015030.htm
- https://www.cdc.gov/pcd/issues/2005/jan/04_0105.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6607md.htm?s_cid=mm6607md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5044a8.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5605a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00017377.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5318a4.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00040052.htm
- http://www.cdc.gov/pcd/issues/2007/oct/06_0051.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0227_zhs.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5444a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015648.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5026md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001815.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00018185.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00015081.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5846a5.htm
- http://www.cdc.gov/pcd/issues/2009/apr/08_0067.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00021729.htm

…and more — 596 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/pcd/issues/2010/jul/09_0246.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026182.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015030.htm

---

## Image has accessible name (WCAG 1.1.1)

**Bug ID:** `VS-4e0e051a`  
**Pattern ID:** `VS-a24eaa8c`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.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:** 1532 instances; 135 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Image has accessible name. Detected by Siteimprove Alfa rule sia-r2 on 135 of 3330 scanned pages (1532 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.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/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5026md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001815.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00015081.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5846a5.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00021729.htm
- http://www.cdc.gov/pcd/issues/2010/may/09_0130_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/05_0009_fr.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5509a5.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038048.htm
- http://www.cdc.gov/pcd/issues/2009/jan/08_0006_es.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038177.htm
- https://www.cdc.gov/mmwR/preview/mmwrhtml/rr5707a1.htm
- https://www.cdc.gov/pcd/issues/2006/jan/05_0129_es.htm
- https://www.cdc.gov/pcd/issues/2011/jul/10_0135.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000620.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5006a3.htm
- http://www.cdc.gov/PCD/es/2009_jul_toc.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00018761.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000543.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5420a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00000450.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5311md.htm

…and more — 135 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/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5026md.htm

---

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

**Bug ID:** `VS-6a8190fe`  
**Pattern ID:** `VS-a0bdbdf6`  
**URL:** https://www.cdc.gov/pcd/issues/2010/jul/09_0246.htm  
**XPath / selector:** `ol:nth-child(56)`  
**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:** 73 instances; 38 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

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

### Description
<ul> and <ol> must only directly contain <li>, <script> or <template> elements. Detected by axe-core rule list on 38 of 3330 scanned pages (73 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2010/jul/09_0246.htm.
2. Locate the element: ol:nth-child(56)
3. Confirm the axe-core finding for rule list against WCAG 1.3.1 Info and Relationships.

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

### Affected pages
- https://www.cdc.gov/pcd/issues/2010/jul/09_0246.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00017377.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00016840.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00016901.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038177.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00033713.htm
- https://www.cdc.gov/infection-control/hcp/healthcare-personnel-infrastructure-routine-practices/guidance-description-file-name.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00018761.htm
- https://www.cdc.gov/fluview/surveillance/2026-week-05.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00018133.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00056176.htm
- http://www.cdc.gov/acip/grade/je-child.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00015916.htm
- https://www.cdc.gov/mmwR/preview/mmwrhtml/00035909.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00019881.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015916.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001965.htm
- https://www.cdc.gov/contraception/hcp/usmec/keeping-up-to-date.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00020645.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038010.htm
- http://www.cdc.gov/bird-flu/php/surveillance/h5n1-human-infections.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5432a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00014869.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00017187.htm

…and more — 38 pages total ([download CSV](csv/axe-core__list.csv)).

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

### Suggested fix
**How to fix:** Use <ul>/<ol> with only <li> children for lists; don't fake lists with <div>s.

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

### Example pages
- https://www.cdc.gov/pcd/issues/2010/jul/09_0246.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00017377.htm

---

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

**Bug ID:** `VS-c8637ed2`  
**Pattern ID:** `VS-07ba3b17`  
**URL:** https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table2.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:** 45 instances; 28 of 3330 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W37 (13 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 28 of 3330 scanned pages (45 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table2.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/table2.html
- http://www.cdc.gov/vaccines/schedules/hcp/imz/adult-conditions.html
- http://www.cdc.gov/brfss/acbs/2010/prevalence_tables/table5a.html
- http://www.cdc.gov/nssp/php/onboarding-resources/companion-guide-ed-data-respiratory-illness.html
- https://www.cdc.gov/acip/grade/yf-vac-boost.html
- https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table15.html
- https://www.cdc.gov/vaccines/acip/recs/GRADE/covid-19-pfizer-biontech-vaccine.html
- http://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table9_LLCP.html
- https://www.cdc.gov/brfss/acbs/2023/prevalence_tables/table3_LLCP.html
- https://www.cdc.gov/brfss/acbs/2010/prevalence_tables/table12.html
- http://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table14.html
- https://www.cdc.gov/united-states-cancer-statistics/publications/mesothelioma.html
- https://www.cdc.gov/immigrant-refugee-health/hcp/civil-surgeons/vaccination.html
- http://www.cdc.gov/brfss/acbs/2010/prevalence_tables/table15.html
- https://www.cdc.gov/legionella/php/surveillance/surveillance-report-2020-2021.html
- http://www.cdc.gov/acip/grade/PCV13.html
- https://www.cdc.gov/brfss/acbs/2009/prevalence_tables/table6.html
- https://www.cdc.gov/brfss/acbs/2018/prevalence_tables/table6_LLCP.html
- http://www.cdc.gov/asthma/healthcare-use/2018/table_b.html
- https://www.cdc.gov/flu-vaccines-work/php/effectiveness-studies/index.html
- http://www.cdc.gov/acip/grade/mening-MenACWY-TT-MenB-FHbp.html
- https://www.cdc.gov/brfss/acbs/2010/prevalence_tables/table14.html
- https://www.cdc.gov/brfss/acbs/2010/prevalence_tables/table8b.html
- https://www.cdc.gov/acip/grade/pneumo-PCV20-age-based.html
- https://www.cdc.gov/asthma/nhis/2021/table4-1.htm

…and more — 28 pages total ([download CSV](csv/axe-core__td-headers-attr.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 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/table2.html
- http://www.cdc.gov/vaccines/schedules/hcp/imz/adult-conditions.html
- http://www.cdc.gov/brfss/acbs/2010/prevalence_tables/table5a.html

---

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

**Bug ID:** `VS-3c785eb7`  
**Pattern ID:** `VS-6175596b`  
**URL:** http://www.cdc.gov/std-ips/php/about/tables.html  
**XPath / selector:** `.table-col[role="cell"][data-col="2"] > li`  
**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:** 12 instances; 5 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### HTML snippet
```html
<li><strong>Goals of Partner Services<br></strong>Principles of PS. “The following principles serve as the foundation for providing partner services to persons with HIV infection or other STDs and the
```

### Description
<li> elements must be contained in a <ul> or <ol>. Detected by axe-core rule listitem on 5 of 3330 scanned pages (12 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/std-ips/php/about/tables.html.
2. Locate the element: .table-col[role="cell"][data-col="2"] > li
3. Confirm the axe-core finding for rule listitem against WCAG 1.3.1 Info and Relationships.

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

### Affected pages
- http://www.cdc.gov/std-ips/php/about/tables.html
- https://www.cdc.gov/foodborne-outbreaks/php/data-research/summary-2017-2020.html
- http://www.cdc.gov/std-ips/php/glossary/appendix-i.html
- https://www.cdc.gov/diabetes-toolkit/php/marketing-resources/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5215a1.htm

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

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

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

### Example pages
- http://www.cdc.gov/std-ips/php/about/tables.html
- https://www.cdc.gov/foodborne-outbreaks/php/data-research/summary-2017-2020.html
- http://www.cdc.gov/std-ips/php/glossary/appendix-i.html

---

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

**Bug ID:** `VS-0117df1a`  
**Pattern ID:** `VS-d6097011`  
**URL:** http://www.cdc.gov/rdc  
**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:** 803 instances; 77 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Presentational children of an element are not focusable. Detected by Siteimprove Alfa rule sia-r68 on 77 of 3330 scanned pages (803 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/rdc.
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
- http://www.cdc.gov/rdc
- https://www.cdc.gov/hepatitis-surveillance-2023/appendix/table-5-4.html
- http://www.cdc.gov/cancer/health-equity/what-cdc-is-doing.html
- https://www.cdc.gov/right-to-know/es/php/campaign-home/index.html
- https://www.cdc.gov/tobacco/es/tobacco-features/spanish-world-no-tobacco-day.html
- http://www.cdc.gov/tb/es/risk-factors/factores-de-riesgo.html
- http://www.cdc.gov/diabetes/hcp/clinical-guidance/diabetes-podiatrist-health.html
- https://www.cdc.gov/schistosomiasis/about/index.html
- http://www.cdc.gov/healthy-aging-data/nhanes/index.html
- http://www.cdc.gov/cannabis/health-effects/index.html
- http://www.cdc.gov/narms/stories/index.html
- https://www.cdc.gov/vision-health-data/case-definitions/cataract.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/nchs/careers/index.html
- http://www.cdc.gov/about/divisions-offices/ocoo.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/foodnet/reports/cidt.html
- http://www.cdc.gov/diabetes/about/gestational-diabetes.html
- https://www.cdc.gov/infant-toddler-nutrition/vitamins-minerals
- https://www.cdc.gov/overdose-prevention/hcp/clinical-care/index.html
- https://www.cdc.gov/hepatitis/php/npr-2025/hep-c-reduce-infections.html
- http://www.cdc.gov/covid/php/interagency-group/index.html
- http://www.cdc.gov/bacterial-vaginosis/about/index.html
- https://www.cdc.gov/radiation-emergencies/hcp/isotopes/uranium-235-238.html
- http://www.cdc.gov/niosh/occupational-risk-assessment/about/index.html
- https://www.cdc.gov/vessel-sanitation/cruise-ship-outbreaks/queen-victoria-january-2024.html
- https://www.cdc.gov/contraception/about

…and more — 77 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
- http://www.cdc.gov/rdc
- https://www.cdc.gov/hepatitis-surveillance-2023/appendix/table-5-4.html
- http://www.cdc.gov/cancer/health-equity/what-cdc-is-doing.html

---

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

**Bug ID:** `VS-44c68502`  
**Pattern ID:** `VS-4408605e`  
**URL:** https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table2.html  
**XPath / selector:** `<th align="left" id="row1 " scope="row">`  
**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:** 299 instances; 16 of 3330 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W37 (13 weeks)

### Description
Element has required aria-owns. Detected by Siteimprove Alfa rule sia-r46 on 16 of 3330 scanned pages (299 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table2.html.
2. Locate the element: <th align="left" id="row1 " scope="row">
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/brfss/acbs/2012/prevalence_tables/table2.html
- https://www.cdc.gov/hepatitis-surveillance-2023/appendix/table-5-4.html
- http://www.cdc.gov/nssp/php/onboarding-resources/companion-guide-ed-data-respiratory-illness.html
- http://www.cdc.gov/hepatitis-surveillance-2021/hepatitis-b/table-2-5.html
- https://www.cdc.gov/brfss/acbs/2023/prevalence_tables/table3_LLCP.html
- https://www.cdc.gov/asthma/nhis/08/table1-2.htm
- https://www.cdc.gov/brfss/acbs/2010/prevalence_tables/table12.html
- https://www.cdc.gov/legionella/php/surveillance/surveillance-report-2020-2021.html
- http://www.cdc.gov/asthma/healthcare-use/2018/table_b.html
- https://www.cdc.gov/brfss/acbs/2010/prevalence_tables/table14.html
- https://www.cdc.gov/brfss/acbs/2010/prevalence_tables/table8b.html
- https://www.cdc.gov/brfss/acbs/2009/prevalence_tables/table7.html
- http://www.cdc.gov/vaccines/acip/recs/GRADE/pneumo-immuno-adults.html
- https://www.cdc.gov/nhsn/hai-report/narrative-commentary.html
- http://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table1.html
- http://www.cdc.gov/asthma/nhis/2012/table2-2.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/brfss/acbs/2012/prevalence_tables/table2.html
- https://www.cdc.gov/hepatitis-surveillance-2023/appendix/table-5-4.html
- http://www.cdc.gov/nssp/php/onboarding-resources/companion-guide-ed-data-respiratory-illness.html

---

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

**Bug ID:** `VS-4e39544f`  
**Pattern ID:** `VS-9207ed51`  
**URL:** https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table2.html  
**XPath / selector:** `@headers="FormerSampSize row26 "`  
**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:** 1989 instances; 10 of 3330 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W37 (12 weeks)

### Description
aria-hidden element is not exposed to assistive technology. Detected by Siteimprove Alfa rule sia-r45 on 10 of 3330 scanned pages (1989 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table2.html.
2. Locate the element: @headers="FormerSampSize row26 "
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/2012/prevalence_tables/table2.html
- http://www.cdc.gov/nssp/php/onboarding-resources/companion-guide-ed-data-respiratory-illness.html
- https://www.cdc.gov/brfss/acbs/2023/prevalence_tables/table3_LLCP.html
- https://www.cdc.gov/brfss/acbs/2010/prevalence_tables/table12.html
- https://www.cdc.gov/legionella/php/surveillance/surveillance-report-2020-2021.html
- http://www.cdc.gov/asthma/healthcare-use/2018/table_b.html
- https://www.cdc.gov/brfss/acbs/2010/prevalence_tables/table14.html
- https://www.cdc.gov/brfss/acbs/2010/prevalence_tables/table8b.html
- https://www.cdc.gov/brfss/acbs/2009/prevalence_tables/table7.html
- http://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table1.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/2012/prevalence_tables/table2.html
- http://www.cdc.gov/nssp/php/onboarding-resources/companion-guide-ed-data-respiratory-illness.html
- https://www.cdc.gov/brfss/acbs/2023/prevalence_tables/table3_LLCP.html

---

## Table cell has header (WCAG 1.3.1)

**Bug ID:** `VS-b827802d`  
**Pattern ID:** `VS-3f067795`  
**URL:** 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/measles/es/data-research/index.html  
**XPath / selector:** `<td class="us-cases left-border" width="50%">`  
**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:** 3131 instances; 5 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Table cell has header. Detected by Siteimprove Alfa rule sia-r77 on 5 of 3330 scanned pages (3131 instances).

### Steps to reproduce
1. Open https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/measles/es/data-research/index.html.
2. Locate the element: <td class="us-cases left-border" width="50%">
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://%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/measles/es/data-research/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6012md.htm?s_cid=mm6012md_w
- http://www.cdc.gov/asthma/healthcare-use/2018/table_b.html
- https://www.cdc.gov/fluview/surveillance/2026-week-21.html
- https://www.cdc.gov/fluview/surveillance/2025-week-37.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

### Example pages
- 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/measles/es/data-research/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6012md.htm?s_cid=mm6012md_w
- http://www.cdc.gov/asthma/healthcare-use/2018/table_b.html

---

## Element has required owned roles (WCAG 1.3.1)

**Bug ID:** `VS-86b198ad`  
**Pattern ID:** `VS-3c632d31`  
**URL:** 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/measles/es/data-research/index.html  
**XPath / selector:** `<h5 id="2026_total_cases" style="font-weight: bold;">`  
**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:** 9 instances; 4 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Element has required owned roles. Detected by Siteimprove Alfa rule sia-r64 on 4 of 3330 scanned pages (9 instances).

### Steps to reproduce
1. Open https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/measles/es/data-research/index.html.
2. Locate the element: <h5 id="2026_total_cases" style="font-weight: bold;">
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://%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/measles/es/data-research/index.html
- https://www.cdc.gov/nchs/products/databriefs/db170.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5445a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5132a7.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://%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/measles/es/data-research/index.html
- https://www.cdc.gov/nchs/products/databriefs/db170.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5445a2.htm

---

## Info and Relationships (WCAG 1.3.1)

**Bug ID:** `VS-2a7f96b1`  
**Pattern ID:** `VS-33b49e3b`  
**URL:** http://www.cdc.gov/nssp/php/onboarding-resources/companion-guide-ed-data-respiratory-illness.html  
**XPath / selector:** `<th id="t1r3c1" rowspan="2" headers="t1r1c1">`  
**WCAG SC:** 1.3.1 — Info and Relationships (Level A)  
**Rule:** Siteimprove Alfa — `sia-r76` ([reference](https://alfa.siteimprove.com/rules/sia-r76))  
**Severity:** Moderate  
**Frequency:** 3 instances; 3 of 3330 pages affected
  
**History:** first seen 2026-W26, last seen 2026-W37 (8 weeks)

### Description
Info and Relationships. Detected by Siteimprove Alfa rule sia-r76 on 3 of 3330 scanned pages (3 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/nssp/php/onboarding-resources/companion-guide-ed-data-respiratory-illness.html.
2. Locate the element: <th id="t1r3c1" rowspan="2" headers="t1r1c1">
3. Confirm the Siteimprove Alfa finding for rule sia-r76 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/nssp/php/onboarding-resources/companion-guide-ed-data-respiratory-illness.html
- https://www.cdc.gov/legionella/php/surveillance/surveillance-report-2020-2021.html
- https://www.cdc.gov/vaccines/pubs/surv-manual/chpt08-mening.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-r76

### Example pages
- http://www.cdc.gov/nssp/php/onboarding-resources/companion-guide-ed-data-respiratory-illness.html
- https://www.cdc.gov/legionella/php/surveillance/surveillance-report-2020-2021.html
- https://www.cdc.gov/vaccines/pubs/surv-manual/chpt08-mening.html

---

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

**Bug ID:** `VS-ecb48d73`  
**Pattern ID:** `VS-8ade3360`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/ss6307a1.htm?s_cid=ss6307a1_w  
**XPath / selector:** `p:nth-child(32) > .noDecoration[href$="mm6053.pdf"]`  
**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:** 87 instances; 81 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### HTML snippet
```html
<a href="/mmwr/pdf/wk/mm6053.pdf" class="noDecoration"><span class="tp-label">18</span>&nbsp;<span class="plugIns"><img src="/TemplatePackage/images/icon_pdf.gif" alt="Adobe PDF file" title="Adobe PDF
```

### Description
Links must be distinguishable without relying on color. Detected by axe-core rule link-in-text-block on 81 of 3330 scanned pages (87 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/ss6307a1.htm?s_cid=ss6307a1_w.
2. Locate the element: p:nth-child(32) > .noDecoration[href$="mm6053.pdf"]
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/mmwr/preview/mmwrhtml/ss6307a1.htm?s_cid=ss6307a1_w
- https://www.cdc.gov/hepatitis-surveillance-2023/appendix/table-5-4.html
- https://www.cdc.gov/health-literacy/php/older-adults/simple-steps.html
- https://www.cdc.gov/infection-control/hcp/nicu-saureus/executive-summary.html
- http://www.cdc.gov/grants/applying/review-process.html
- https://www.cdc.gov/hepatitis/php/surveillance-guidance/acknowledgements.html
- https://www.cdc.gov/hepatitis/statistics/2021surveillance/hepatitis-c/table-3.1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr6403a1.htm?s_cid=rr6403a1_w
- http://www.cdc.gov/infection-control/hcp/isolation-precautions/appendix-a.html
- https://www.cdc.gov/infection-control/hcp/environmental-control/key-terms.html
- https://www.cdc.gov/infection-control/hcp/healthcare-personnel-infrastructure-routine-practices/guidance-description-file-name.html
- http://www.cdc.gov/hepatitis-surveillance-2022/appendix/table-5-2.html
- https://www.cdc.gov/hepatitis-surveillance-2021/hepatitis-c/table-3-6.html
- https://www.cdc.gov/hepatitis/php/surveillance-guidance/hepatitis-b.html
- https://www.cdc.gov/hepatitis-surveillance-2021/hepatitis-c/figure-3-7.html
- http://www.cdc.gov/hepatitis/php/npr-2025/overview.html
- http://www.cdc.gov/infection-control/hcp/disinfection-and-sterilization/advantages-disadvantages.html
- https://www.cdc.gov/museum/education/newsletter/2021/july
- https://www.cdc.gov/hepatitis-surveillance-2022/hepatitis-b/figure-2-7.html
- https://www.cdc.gov/hepatitis/php/npr-2025/hep-c-reduce-infections.html
- http://www.cdc.gov/bird-flu/avian-timeline/2000-2009.html
- http://www.cdc.gov/hepatitis/statistics/2021surveillance/hepatitis-b/table-2.3.htm
- http://www.cdc.gov/infection-control/hcp/healthcare-personnel-epidemiology-control/meningococcal-disease.html
- https://www.cdc.gov/hepatitis-surveillance-2023/hepatitis-c/figure-3-5.html
- http://www.cdc.gov/infection-control/hcp/environmental-control/water.html

…and more — 81 pages total ([download CSV](csv/axe-core__link-in-text-block.csv)).

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

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

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/ss6307a1.htm?s_cid=ss6307a1_w
- https://www.cdc.gov/hepatitis-surveillance-2023/appendix/table-5-4.html
- https://www.cdc.gov/health-literacy/php/older-adults/simple-steps.html

---

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

**Bug ID:** `VS-c022d10d`  
**Pattern ID:** `VS-efd91fdd`  
**URL:** https://www.cdc.gov/ccindex/everydaywords/index.html  
**XPath / selector:** `<a href="https://www.plainlanguage.gov/guidelines/" target="_blank" class="tp-link-policy" data-domain-ext="gov">`  
**WCAG SC:** 1.4.1 — Use of Color (Level A)  
**Rule:** Siteimprove Alfa — `sia-r62` ([reference](https://alfa.siteimprove.com/rules/sia-r62))  
**Severity:** Moderate  
**Frequency:** 2 instances; 1 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (13 weeks)

### Description
Link in text block is visually distinguishable without color. Detected by Siteimprove Alfa rule sia-r62 on 1 of 3330 scanned pages (2 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/ccindex/everydaywords/index.html.
2. Locate the element: <a href="https://www.plainlanguage.gov/guidelines/" target="_blank" class="tp-link-policy" data-domain-ext="gov">
3. Confirm the Siteimprove Alfa finding for rule sia-r62 against WCAG 1.4.1 Use of Color.

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

### Affected pages
- https://www.cdc.gov/ccindex/everydaywords/index.html

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

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

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

---

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

**Bug ID:** `VS-9f6a9ea6`  
**Pattern ID:** `VS-c613c153`  
**URL:** https://www.cdc.gov/surv-manual/php/table-of-contents/chapter-20-analysis-of-surveillance-data.html  
**XPath / selector:** `.dfe-block.dfe-block--cdcmodule.cdc_page_element:nth-child(43) > .dfe-block__inner > .cdc-textblock > div`  
**WCAG SC:** 2.1.1 — Keyboard (Level A)  
**Rule:** axe-core — `scrollable-region-focusable` ([reference](https://dequeuniversity.com/rules/axe/4.12/scrollable-region-focusable?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 62 instances; 34 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 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 34 of 3330 scanned pages (62 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/surv-manual/php/table-of-contents/chapter-20-analysis-of-surveillance-data.html.
2. Locate the element: .dfe-block.dfe-block--cdcmodule.cdc_page_element:nth-child(43) > .dfe-block__inner > .cdc-textblock > div
3. Confirm the axe-core finding for rule scrollable-region-focusable against WCAG 2.1.1 Keyboard.

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

### Affected pages
- https://www.cdc.gov/surv-manual/php/table-of-contents/chapter-20-analysis-of-surveillance-data.html
- https://www.cdc.gov/hepatitis/statistics/2021surveillance/hepatitis-c/table-3.1.htm
- http://www.cdc.gov/iis/code-sets/fall-season-respiratory-codes.html
- https://www.cdc.gov/fluview/surveillance/2026-week-05.html
- https://www.cdc.gov/acip/grade/rabies-booster-dose.html
- https://www.cdc.gov/foodborne-outbreaks/php/data-research/summary-2017-2020.html
- https://www.cdc.gov/heat-health/es/hcp/clinical-guidance/el-calor-y-los-medicamentos-directrices-para-medicos.html
- https://www.cdc.gov/flu/professionals/antivirals/summary-clinicians.htm
- http://www.cdc.gov/hepatitis/statistics/2021surveillance/hepatitis-b/table-2.3.htm
- http://www.cdc.gov/acip/grade/rabies-2-dose.html
- http://www.cdc.gov/infection-control/hcp/environmental-control/water.html
- https://www.cdc.gov/mmwr/volumes/65/ss/ss6501a1.htm
- https://www.cdc.gov/mmwr/volumes/65/wr/mm6526a1.htm?s_cid=mm6526a1_w
- https://www.cdc.gov/vaccines/acip/recs/GRADE/covid-19-pfizer-biontech-vaccine.html
- http://www.cdc.gov/adultvaxview/publications-resources/sociodemographic-factors-covid19-vaccination.html
- http://www.cdc.gov/hepatitis-surveillance-2021/hepatitis-b/table-2-5.html
- http://www.cdc.gov/acip/grade/JYNNEOS-orthopoxvirus-heterologous.html
- https://www.cdc.gov/fluview/surveillance/2025-week-09.html
- https://www.cdc.gov/mmwr/volumes/65/wr/mm6546a9.htm?s_cid=mm6546a9_w
- http://www.cdc.gov/fluview/surveillance/2026-week-04.html
- http://www.cdc.gov/asthma-data/nhis/2022-standard-errors-lifetime-population-estimates-age.html
- https://www.cdc.gov/legionella/php/surveillance/surveillance-report-2020-2021.html
- http://www.cdc.gov/acip/grade/PCV13.html
- http://www.cdc.gov/clinical-standardization-programs/about/why-participate.html
- https://www.cdc.gov/hemophilia-community-counts/php/data-research/2024-march-other-disorders.html

…and more — 34 pages total ([download CSV](csv/axe-core__scrollable-region-focusable.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:** Make scrollable regions keyboard-focusable (tabindex="0") so keyboard users can scroll them.

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

### Example pages
- https://www.cdc.gov/surv-manual/php/table-of-contents/chapter-20-analysis-of-surveillance-data.html
- https://www.cdc.gov/hepatitis/statistics/2021surveillance/hepatitis-c/table-3.1.htm
- http://www.cdc.gov/iis/code-sets/fall-season-respiratory-codes.html

---

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

**Bug ID:** `VS-950d20de`  
**Pattern ID:** `VS-4b45acfe`  
**URL:** http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5605a5.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:** 18 instances; 14 of 3330 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W37 (13 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 14 of 3330 scanned pages (18 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5605a5.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
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5605a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4843a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5645a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5307a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5004a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5214a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/rr5501a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5508a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5604a5.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/rr5205a1.htm
- https://www.cdc.gov/mmwR/preview/mmwrhtml/rr5208a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5512a3.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/ss5210a1.htm
- https://www.cdc.gov/mmwR/preview/mmwrhtml/mm5701a8.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
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5605a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm4843a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5645a6.htm

---

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

**Bug ID:** `VS-95634ceb`  
**Pattern ID:** `VS-c80d5faa`  
**URL:** http://www.cdc.gov/nchs/updates/feature-1.html  
**XPath / selector:** `html`  
**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 3330 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W37 (9 weeks)

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

### Description
Documents must have <title> element to aid in navigation. Detected by axe-core rule document-title on 1 of 3330 scanned pages (1 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/nchs/updates/feature-1.html.
2. Locate the element: html
3. Confirm the axe-core finding for rule document-title against WCAG 2.4.2 Page Titled.

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

### Affected pages
- http://www.cdc.gov/nchs/updates/feature-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 page a unique, descriptive <title>.

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

---

## Document has a title element (WCAG 2.4.2)

**Bug ID:** `VS-08a1aeb0`  
**Pattern ID:** `VS-0728f339`  
**URL:** http://www.cdc.gov/nchs/updates/feature-1.html  
**XPath / selector:** `{"type":"document","children":[{"type":"element","children":[{"type":"element","`  
**WCAG SC:** 2.4.2 — Page Titled (Level A)  
**Rule:** Siteimprove Alfa — `sia-r1` ([reference](https://alfa.siteimprove.com/rules/sia-r1))  
**Severity:** Moderate  
**Frequency:** 1 instances; 1 of 3330 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W37 (6 weeks)

### Description
Document has a title element. Detected by Siteimprove Alfa rule sia-r1 on 1 of 3330 scanned pages (1 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/nchs/updates/feature-1.html.
2. Locate the element: {"type":"document","children":[{"type":"element","children":[{"type":"element","
3. Confirm the Siteimprove Alfa finding for rule sia-r1 against WCAG 2.4.2 Page Titled.

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

### Affected pages
- http://www.cdc.gov/nchs/updates/feature-1.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-r1

---

## Links must have discernible text (WCAG 2.4.4)

**Bug ID:** `VS-83f5c05b`  
**Pattern ID:** `VS-e9fe47ac`  
**URL:** https://www.cdc.gov/pcd/issues/2010/jul/09_0246.htm  
**XPath / selector:** `table[cellpadding="0"]:nth-child(2) > tbody > tr > td[width="140"] > a[href$="cdc.gov/"]`  
**WCAG SC:** 2.4.4 — Link Purpose (In Context) (Level A)  
**Rule:** axe-core — `link-name` ([reference](https://dequeuniversity.com/rules/axe/4.12/link-name?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 969 instances; 250 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

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

### Description
Links must have discernible text. Detected by axe-core rule link-name on 250 of 3330 scanned pages (969 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2010/jul/09_0246.htm.
2. Locate the element: table[cellpadding="0"]:nth-child(2) > tbody > tr > td[width="140"] > a[href$="cdc.gov/"]
3. Confirm the axe-core finding for rule link-name against WCAG 2.4.4 Link Purpose (In Context).

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

### Affected pages
- https://www.cdc.gov/pcd/issues/2010/jul/09_0246.htm
- https://www.cdc.gov/pcd/issues/2005/jan/04_0105.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5605a5.htm
- http://www.cdc.gov/niosh-rtecs/WY280DE8.html
- http://www.cdc.gov/pcd/issues/2007/oct/06_0051.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0227_zhs.htm
- https://www.cdc.gov/laboratory/specimen-submission/detail.html?CDCTestCode=CDC-10391
- http://www.cdc.gov/heart-disease/php/data-research/ems/index.html
- http://www.cdc.gov/pcd/issues/2009/apr/08_0067.htm
- http://www.cdc.gov/pcd/issues/2006/jul/05_0154.htm
- https://www.cdc.gov/pcd/issues/2009/apr/08_0141_es.htm
- https://www.cdc.gov/niosh-rtecs/MJ7026F0.html
- https://www.cdc.gov/pcd/issues/2012/10_0254_es.htm
- http://www.cdc.gov/pcd/issues/2010/may/09_0130_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/05_0009_fr.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5645a6.htm
- https://www.cdc.gov/hiv/guidelines/persons.html
- https://www.cdc.gov/pcd/issues/2008/jan/07_0179.htm
- http://www.cdc.gov/pcd/issues/2009/jan/08_0006_es.htm
- https://www.cdc.gov/pcd/issues/2006/jan/05_0129_es.htm
- http://www.cdc.gov/pcd/issues/2008/jan/06_0153.htm
- http://www.cdc.gov/pcd/issues/2008/jan/07_0150_zhs.htm
- https://www.cdc.gov/pcd/issues/2004/apr/03_0017.htm
- http://www.cdc.gov/pcd/issues/2014/12_0265e.htm
- https://www.cdc.gov/pcd/issues/2006/jan/05_0109.htm

…and more — 250 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/2010/jul/09_0246.htm
- https://www.cdc.gov/pcd/issues/2005/jan/04_0105.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5605a5.htm

---

## Link has accessible name (WCAG 2.4.4)

**Bug ID:** `VS-76da46c2`  
**Pattern ID:** `VS-28ebd979`  
**URL:** http://www.cdc.gov/niosh-rtecs/WY280DE8.html  
**XPath / selector:** `<a href="reference.html#" target="_blank">`  
**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:** 316 instances; 58 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Link has accessible name. Detected by Siteimprove Alfa rule sia-r11 on 58 of 3330 scanned pages (316 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/niosh-rtecs/WY280DE8.html.
2. Locate the element: <a href="reference.html#" target="_blank">
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/niosh-rtecs/WY280DE8.html
- http://www.cdc.gov/pcd/issues/2010/may/09_0130_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/05_0009_fr.htm
- http://www.cdc.gov/pcd/issues/2009/jan/08_0006_es.htm
- https://www.cdc.gov/pcd/issues/2006/jan/05_0129_es.htm
- https://www.cdc.gov/pcd/issues/2011/jul/10_0135.htm
- http://www.cdc.gov/PCD/es/2009_jul_toc.htm
- https://www.cdc.gov/pcd/issues/2019/18_0336.htm
- http://www.cdc.gov/pcd/issues/2007/jan/06_0025_es.htm
- http://www.cdc.gov/pcd/issues/2009/apr/08_0039_es.htm
- 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/tb/prevention/index.html
- https://www.cdc.gov/pcd/issues/2009/jul/08_0129_es.htm
- https://www.cdc.gov/prams/php/participating-states/index.html
- http://www.cdc.gov/PCD/issues/2009/jul/08_0130_es.htm
- https://www.cdc.gov/niosh-rtecs/TZ4D7038.html
- https://www.cdc.gov/pcd/issues/2008/apr/07_0201.htm
- https://www.cdc.gov/pcd/issues/2009/jan/08_0029_zht.htm
- http://www.cdc.gov/pcd/issues/2006/apr/05_0097.htm
- http://www.cdc.gov/pcd/issues/2006/oct/06_0034_es.htm
- https://www.cdc.gov/mmwr/volumes/65/ss/ss6501a1.htm
- https://www.cdc.gov/niosh-rtecs/XS401640.html
- https://www.cdc.gov/pcd/issues/2017/16_0567.htm
- https://www.cdc.gov/niosh-rtecs/NK602160.html
- https://www.cdc.gov/niosh-rtecs/DC802C8.html
- http://www.cdc.gov/niosh-rtecs/VV6FD8D0.html

…and more — 58 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/niosh-rtecs/WY280DE8.html
- http://www.cdc.gov/pcd/issues/2010/may/09_0130_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/05_0009_fr.htm

---

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

**Bug ID:** `VS-437dcbca`  
**Pattern ID:** `VS-c126b6a6`  
**URL:** https://www.cdc.gov/pcd/issues/2010/jul/09_0246.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:** 589 instances; 589 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

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

### Description
<html> element must have a lang attribute. Detected by axe-core rule html-has-lang on 589 of 3330 scanned pages (589 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2010/jul/09_0246.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/pcd/issues/2010/jul/09_0246.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026182.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015030.htm
- https://www.cdc.gov/pcd/issues/2005/jan/04_0105.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- https://www.cdc.gov/flu/weekly/weeklyarchives2024-2025/data/iliage18.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5044a8.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5605a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00017377.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5318a4.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00040052.htm
- http://www.cdc.gov/pcd/issues/2007/oct/06_0051.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0227_zhs.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5444a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015648.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5026md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001815.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00018185.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00015081.htm
- http://www.cdc.gov/pcd/issues/2009/apr/08_0067.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00021729.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4912a7.htm

…and more — 589 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/pcd/issues/2010/jul/09_0246.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026182.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015030.htm

---

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

**Bug ID:** `VS-60de3974`  
**Pattern ID:** `VS-7a0e5645`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.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:** 131 instances; 131 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Document has a valid lang attribute. Detected by Siteimprove Alfa rule sia-r4 on 131 of 3330 scanned pages (131 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.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/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5026md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001815.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00015081.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00021729.htm
- http://www.cdc.gov/pcd/issues/2010/may/09_0130_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/05_0009_fr.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5509a5.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038048.htm
- http://www.cdc.gov/pcd/issues/2009/jan/08_0006_es.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038177.htm
- https://www.cdc.gov/mmwR/preview/mmwrhtml/rr5707a1.htm
- https://www.cdc.gov/pcd/issues/2006/jan/05_0129_es.htm
- https://www.cdc.gov/pcd/issues/2011/jul/10_0135.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000620.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5006a3.htm
- http://www.cdc.gov/PCD/es/2009_jul_toc.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00018761.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000543.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5420a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00000450.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5311md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000803.htm

…and more — 131 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/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5026md.htm

---

## Form elements must have labels (WCAG 4.1.2)

**Bug ID:** `VS-d311d5c7`  
**Pattern ID:** `VS-fafffee0`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/ss6307a1.htm?s_cid=ss6307a1_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:** 121 instances; 119 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 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 119 of 3330 scanned pages (121 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/ss6307a1.htm?s_cid=ss6307a1_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/ss6307a1.htm?s_cid=ss6307a1_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6340a12.htm?s_cid=mm6340a12_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr6105a1.htm
- https://www.cdc.gov/clean-hands/hcp/clean-hands-count/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6440a4.htm?s_cid=mm6440a4_e
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6242a3.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6302a7.htm?s_cid=mm6302a7_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6047a3.htm?s_cid=mm6047a3_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6039a9.htm?s_cid=mm6039a9_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5909a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6403a8.htm?s_cid=mm6403a8_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6023a5.htm?s_cid=mm6023a5_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6445a1.htm?s_cid=mm6445a1_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6423a5.htm?s_cid=mm6423a5_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6040a2.htm?s_cid=mm6040a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr6403a1.htm?s_cid=rr6403a1_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr6005a2.htm?s_cid=rr6005a2_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6020a7.htm?s_cid=mm6020a7_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6104a5.htm?s_cid=mm6104a5_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6329a8.htm?s_cid=mm6329a8_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6335a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6043a1.htm?s_cid=mm6043a1_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6147a7.htm?s_cid=mm6147a7_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6309a5.htm?s_cid=mm6309a5_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6038a2.htm

…and more — 119 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/ss6307a1.htm?s_cid=ss6307a1_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6340a12.htm?s_cid=mm6340a12_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr6105a1.htm

---

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

**Bug ID:** `VS-e02807b9`  
**Pattern ID:** `VS-fab92378`  
**URL:** https://www.cdc.gov/drugoverdose/fatal/dashboard  
**XPath / selector:** `select[data-tip=""]`  
**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:** 2 instances; 2 of 3330 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W37 (13 weeks)

### HTML snippet
```html
<select data-tip="" currentitem="false" style="max-width: 100%;">
```

### Description
Select element must have an accessible name. Detected by axe-core rule select-name on 2 of 3330 scanned pages (2 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/drugoverdose/fatal/dashboard.
2. Locate the element: select[data-tip=""]
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/drugoverdose/fatal/dashboard
- http://www.cdc.gov/tobacco/campaign/tips/spanish/dejar-fumar/medicamentos/como-usar-medicamentos/tabletas-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/drugoverdose/fatal/dashboard
- http://www.cdc.gov/tobacco/campaign/tips/spanish/dejar-fumar/medicamentos/como-usar-medicamentos/tabletas-de-nicotina.html

---

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

**Bug ID:** `VS-ccdd8c24`  
**Pattern ID:** `VS-1467ea8a`  
**URL:** http://www.cdc.gov/nhsn/facadmin  
**XPath / selector:** `.fieldset--checkbox-group`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** axe-core — `aria-allowed-attr` ([reference](https://dequeuniversity.com/rules/axe/4.12/aria-allowed-attr?application=axeAPI))  
**Severity:** Critical  
**Frequency:** 1 instances; 1 of 3330 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W37 (8 weeks)

### HTML snippet
```html
<fieldset class="fieldset--checkbox-group" aria-required="true">
```

### Description
Elements must only use supported ARIA attributes. Detected by axe-core rule aria-allowed-attr on 1 of 3330 scanned pages (1 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/nhsn/facadmin.
2. Locate the element: .fieldset--checkbox-group
3. Confirm the axe-core finding for rule aria-allowed-attr against WCAG 4.1.2 Name, Role, Value.

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

### Affected pages
- http://www.cdc.gov/nhsn/facadmin

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

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

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

---

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

**Bug ID:** `VS-b4820298`  
**Pattern ID:** `VS-3f76c7ea`  
**URL:** http://www.cdc.gov/long-term-care-facilities/hcp/prevent-mdro/PPE.html  
**XPath / selector:** `div[data-yt-id="WuX1Jn7SoHw"] > iframe[allowfullscreen="allowfullscreen"][title=""]`  
**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:** 68 instances; 27 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### HTML snippet
```html
<iframe src="//www.youtube-nocookie.com/embed/WuX1Jn7SoHw?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 27 of 3330 scanned pages (68 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/long-term-care-facilities/hcp/prevent-mdro/PPE.html.
2. Locate the element: div[data-yt-id="WuX1Jn7SoHw"] > iframe[allowfullscreen="allowfullscreen"][title=""]
3. Confirm the axe-core finding for rule frame-title against WCAG 4.1.2 Name, Role, Value.

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

### Affected pages
- http://www.cdc.gov/long-term-care-facilities/hcp/prevent-mdro/PPE.html
- https://www.cdc.gov/lab-training/php/virtual-reality/index.html
- https://www.cdc.gov/diabetes-prevention/employers-insurers/impact-toolkit-help.html
- https://www.cdc.gov/cancer-survivors/es/patients/be-prepared-for-an-emergency.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/nchs/careers/index.html
- https://www.cdc.gov/overdose-resources/files/which-is-counterfeit.html
- https://www.cdc.gov/amd/training/covid-toolkit/module3-2.html
- https://www.cdc.gov/diabetes/diabetes-tv/imagine-you-preventing-type-2.html
- http://www.cdc.gov/diabetes-ndwp/start-the-journey-to-health/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/bird-flu/video-series/raw-milk.html
- http://www.cdc.gov/diabetes-prevention/employers-insurers/impact-toolkit-help.html
- http://www.cdc.gov/tb/php/genotyping/whole-genome-sequencing.html
- https://www.cdc.gov/stop-overdose/es/response/que-hacer-si-cree-que-alguien-tiene-una-sobredosis.html
- https://www.cdc.gov/radiation-emergencies/features/fukushima.html
- http://www.cdc.gov/rx-awareness/about/index.html
- https://www.cdc.gov/polaris/php/about/index.html
- https://www.cdc.gov/advanced-molecular-detection/php/training/index.html
- http://www.cdc.gov/heads-up/about/index.html
- https://www.cdc.gov/hearher/personal-stories/index.html
- http://www.cdc.gov/advanced-molecular-detection/php/training/module-2-1.html
- http://www.cdc.gov/blood-clots/risk-factors/cancer.html
- http://www.cdc.gov/cancer/prevention/screening.html
- https://www.cdc.gov/tb/php/genotyping/analytic-tools.html
- https://www.cdc.gov/advanced-molecular-detection/php/training/module-3-4.html
- https://www.cdc.gov/cancer/es/features/cancer-and-men.html

…and more — 27 pages total ([download CSV](csv/axe-core__frame-title.csv)).

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

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

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

### Example pages
- http://www.cdc.gov/long-term-care-facilities/hcp/prevent-mdro/PPE.html
- https://www.cdc.gov/lab-training/php/virtual-reality/index.html
- https://www.cdc.gov/diabetes-prevention/employers-insurers/impact-toolkit-help.html

---

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

**Bug ID:** `VS-f9ee407c`  
**Pattern ID:** `VS-5c82bd60`  
**URL:** https://www.cdc.gov/hepatitis-surveillance-2021/hepatitis-c/figure-3-7.html  
**XPath / selector:** `th[aria-labelledby=":r3:-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:** 225 instances; 16 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 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 16 of 3330 scanned pages (225 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/hepatitis-surveillance-2021/hepatitis-c/figure-3-7.html.
2. Locate the element: th[aria-labelledby=":r3:-heading-0"] > .sort-icon[role="button"]
3. Confirm the axe-core finding for rule aria-command-name against WCAG 4.1.2 Name, Role, Value.

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

### Affected pages
- https://www.cdc.gov/hepatitis-surveillance-2021/hepatitis-c/figure-3-7.html
- https://www.cdc.gov/hepatitis-surveillance-2022/hepatitis-b/figure-2-7.html
- https://www.cdc.gov/hepatitis/php/npr-2025/hep-c-reduce-infections.html
- https://www.cdc.gov/vision-health-data/prevalence-estimates/amd-prevalence.html
- https://www.cdc.gov/hepatitis-surveillance-2023/hepatitis-c/figure-3-5.html
- https://www.cdc.gov/international-infection-control/php/stories/ukraine-ar-detection.html
- https://www.cdc.gov/hepatitis/php/npr-2025/hep-c-reduce-deaths.html
- http://www.cdc.gov/hepatitis-surveillance-2021/hepatitis-b/figure-2-6.html
- http://www.cdc.gov/united-states-cancer-statistics/publications/lung-cancer-types.html
- https://www.cdc.gov/united-states-cancer-statistics/publications/mesothelioma.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/vaccine-safety-systems/hcp/cisa/index.html
- https://www.cdc.gov/hepatitis/statistics/2021surveillance/hepatitis-b/figure-2.5.htm
- https://cdc.gov/hepatitis/php/npr-2024/hep-c-reduce-infections-pwid.html
- https://www.cdc.gov/hepatitis-surveillance-2021/hepatitis-c/figure-3-5.html
- https://www.cdc.gov/hepatitis/statistics/2021surveillance/hepatitis-c/figure-3.4.htm
- http://www.cdc.gov/hepatitis-surveillance-2022/hepatitis-b/figure-2-5.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
- https://www.cdc.gov/hepatitis-surveillance-2021/hepatitis-c/figure-3-7.html
- https://www.cdc.gov/hepatitis-surveillance-2022/hepatitis-b/figure-2-7.html
- https://www.cdc.gov/hepatitis/php/npr-2025/hep-c-reduce-infections.html

---

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

**Bug ID:** `VS-3991421a`  
**Pattern ID:** `VS-58301a87`  
**URL:** https://www.cdc.gov/tobacco/campaign/tips/spanish/poblaciones/audiencia-general.html  
**XPath / selector:** `#acc-header-2`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** axe-core — `nested-interactive` ([reference](https://dequeuniversity.com/rules/axe/4.12/nested-interactive?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 3 instances; 3 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

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

### Description
Interactive controls must not be nested. Detected by axe-core rule nested-interactive on 3 of 3330 scanned pages (3 instances).

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

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

### Affected pages
- https://www.cdc.gov/tobacco/campaign/tips/spanish/poblaciones/audiencia-general.html
- https://www.cdc.gov/tobacco/campaign/tips/diseases/copd.html
- https://www.cdc.gov/tobacco/campaign/tips/groups/military.html

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

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

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

### Example pages
- https://www.cdc.gov/tobacco/campaign/tips/spanish/poblaciones/audiencia-general.html
- https://www.cdc.gov/tobacco/campaign/tips/diseases/copd.html
- https://www.cdc.gov/tobacco/campaign/tips/groups/military.html

---

## Form field has accessible name (WCAG 4.1.2)

**Bug ID:** `VS-97bc05f3`  
**Pattern ID:** `VS-a48e6078`  
**URL:** http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6023a5.htm?s_cid=mm6023a5_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:** 85 instances; 33 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Form field has accessible name. Detected by Siteimprove Alfa rule sia-r8 on 33 of 3330 scanned pages (85 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6023a5.htm?s_cid=mm6023a5_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
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6023a5.htm?s_cid=mm6023a5_w
- https://www.cdc.gov/act-early/digital-online-checklist/6-months.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6203a3.htm
- http://www.cdc.gov/mental-health/about-data/community-connection.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6104a6.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6042a3.htm?s_cid=mm6042a3_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6118a5.htm?s_cid=mm6118a5_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6249a7.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6447md.htm?s_cid=mm6447md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/su6102a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5920a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6043a9.htm?s_cid=mm6043a9_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6349a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6012md.htm?s_cid=mm6012md_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6301a8.htm?s_cid=mm6301a8_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5942a5.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6447a6.htm?s_cid=mm6447a6_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6432a5.htm?s_cid=mm6432a5_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6004a3.htm?s_cid=mm6004a3_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6433a4.htm?s_cid=mm6433a4_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6426md.htm?s_cid=mm6426md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6445a5.htm?s_cid=mm6445a5_w
- https://www.cdc.gov/mmwr/indrr_2001.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6301a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6416a9.htm?s_cid=mm6416a9_w

…and more — 33 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
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6023a5.htm?s_cid=mm6023a5_w
- https://www.cdc.gov/act-early/digital-online-checklist/6-months.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6203a3.htm

---

## Button has accessible name (WCAG 4.1.2)

**Bug ID:** `VS-d2429e77`  
**Pattern ID:** `VS-29f9f921`  
**URL:** https://www.cdc.gov/hepatitis/php/npr-2025/hep-c-reduce-infections.html  
**XPath / selector:** `<span role="button" class="sort-icon">`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** Siteimprove Alfa — `sia-r12` ([reference](https://alfa.siteimprove.com/rules/sia-r12))  
**Severity:** Moderate  
**Frequency:** 42 instances; 4 of 3330 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W37 (13 weeks)

### Description
Button has accessible name. Detected by Siteimprove Alfa rule sia-r12 on 4 of 3330 scanned pages (42 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/hepatitis/php/npr-2025/hep-c-reduce-infections.html.
2. Locate the element: <span role="button" class="sort-icon">
3. Confirm the Siteimprove Alfa finding for rule sia-r12 against WCAG 4.1.2 Name, Role, Value.

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

### Affected pages
- https://www.cdc.gov/hepatitis/php/npr-2025/hep-c-reduce-infections.html
- https://www.cdc.gov/hepatitis/php/npr-2025/hep-c-reduce-deaths.html
- http://www.cdc.gov/nchs/nvss/facility-worksheets-guide/15.htm
- https://www.cdc.gov/hepatitis/statistics/2021surveillance/hepatitis-c/figure-3.4.htm

### 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/hepatitis/php/npr-2025/hep-c-reduce-infections.html
- https://www.cdc.gov/hepatitis/php/npr-2025/hep-c-reduce-deaths.html
- http://www.cdc.gov/nchs/nvss/facility-worksheets-guide/15.htm

---

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

**Bug ID:** `VS-069d232d`  
**Pattern ID:** `VS-a2a3dffb`  
**URL:** 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/measles/es/data-research/index.html  
**XPath / selector:** `<svg width="657.515625" height="279.86000061035156" class="linear   false false" role="img">`  
**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 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (13 weeks)

### Description
Component with same name serves same purpose. Detected by Siteimprove Alfa rule sia-r90 on 1 of 3330 scanned pages (1 instances).

### Steps to reproduce
1. Open https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/measles/es/data-research/index.html.
2. Locate the element: <svg width="657.515625" height="279.86000061035156" class="linear   false false" role="img">
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://%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/measles/es/data-research/index.html

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

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

---

## aria-hidden element does not contain focusable elements (WCAG 4.1.2)

**Bug ID:** `VS-895d17ad`  
**Pattern ID:** `VS-f6cf30ff`  
**URL:** https://www.cdc.gov/howrightnow/espanol/emocion/soledad/index.html  
**XPath / selector:** `<div class="modal fade" id="c2pamodal" tabindex="-1" role="dialog">`  
**WCAG SC:** 4.1.2 — Name, Role, Value (Level A)  
**Rule:** Siteimprove Alfa — `sia-r17` ([reference](https://alfa.siteimprove.com/rules/sia-r17))  
**Severity:** Moderate  
**Frequency:** 1 instances; 1 of 3330 pages affected
  
**History:** first seen 2026-W28, last seen 2026-W37 (5 weeks)

### Description
aria-hidden element does not contain focusable elements. Detected by Siteimprove Alfa rule sia-r17 on 1 of 3330 scanned pages (1 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/howrightnow/espanol/emocion/soledad/index.html.
2. Locate the element: <div class="modal fade" id="c2pamodal" tabindex="-1" role="dialog">
3. Confirm the Siteimprove Alfa finding for rule sia-r17 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/howrightnow/espanol/emocion/soledad/index.html

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

### Suggested fix
See remediation guidance: https://alfa.siteimprove.com/rules/sia-r17

---

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

**Bug ID:** `VS-d3ae4cb9`  
**Pattern ID:** `VS-be8d563e`  
**URL:** https://www.cdc.gov/pcd/issues/2013/13_0015.htm  
**XPath / selector:** `.wm-label`  
**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:** 879 instances; 544 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### HTML snippet
```html
<span class="wm-label" style="position: absolute; left: 3px; display: inline; cursor: text; color: rgb(204, 204, 204);">Choose a topic above</span>
```

### Description
Elements must meet minimum color contrast ratio thresholds. Detected by axe-core rule color-contrast on 544 of 3330 scanned pages (879 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2013/13_0015.htm.
2. Locate the element: .wm-label
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/pcd/issues/2013/13_0015.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026182.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5044a8.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5605a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00017377.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5318a4.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00040052.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr6105a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5444a4.htm
- http://www.cdc.gov/about/leadership/ncipc.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015648.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5026md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001815.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00018185.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00015081.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5846a5.htm
- https://www.cdc.gov/pcd/issues/2013/12_0084_es.htm
- https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00021729.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6242a3.htm

…and more — 544 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/pcd/issues/2013/13_0015.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026182.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015030.htm

---

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

**Bug ID:** `VS-25f1167e`  
**Pattern ID:** `VS-f7e99f4b`  
**URL:** http://www.cdc.gov/rdc  
**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:** 1401 instances; 243 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Text has sufficient color contrast (Enhanced). Detected by Siteimprove Alfa rule sia-r69 on 243 of 3330 scanned pages (1401 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/rdc.
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
- http://www.cdc.gov/rdc
- https://www.cdc.gov/nchs/nhis/2019_quest_redesign.htm
- https://www.cdc.gov/diabetes/healthy-eating/spotting-hidden-sugars-in-everyday-foods.html
- http://www.cdc.gov/von-willebrand/about/index.html
- https://www.cdc.gov/clinical-standardization-programs/php/cvd/index.html
- http://www.cdc.gov/cancer/health-equity/what-cdc-is-doing.html
- http://www.cdc.gov/about/leadership/ncipc.html
- https://www.cdc.gov/niosh/veterinary/about
- https://www.cdc.gov/right-to-know/es/php/campaign-home/index.html
- http://www.cdc.gov/vessel-sanitation/cruise-ship-outbreaks/index.html
- http://www.cdc.gov/niosh/bulletin/2025/products_2024.html
- http://www.cdc.gov/niosh/bulletin/2017/national-police-week.html
- https://www.cdc.gov/niosh/stress/about
- https://www.cdc.gov/tobacco/es/tobacco-features/spanish-world-no-tobacco-day.html
- https://www.cdc.gov/vhf/ebola/healthcare-us/ppe/guidance.html
- http://www.cdc.gov/niosh/bulletin/2015/nail-guns.html
- http://www.cdc.gov/tb/es/risk-factors/factores-de-riesgo.html
- http://www.cdc.gov/diabetes/hcp/clinical-guidance/diabetes-podiatrist-health.html
- https://www.cdc.gov/surv-manual/php/table-of-contents/chapter-20-analysis-of-surveillance-data.html
- https://www.cdc.gov/jamestown-canyon/data-maps/index.html
- https://www.cdc.gov/niosh/extramural-programs/php/about_oep/study-section.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/media/releases/2025/cdc-expands-listeria-outbreak-alert-to-include-additional-prepared-foods.html
- https://www.cdc.gov/rsv/hcp/vaccine-clinical-guidance/index.html
- http://www.cdc.gov/skin-cancer/es/sun-safety/index.html
- http://www.cdc.gov/nchs/hus/sources-definitions/nndss.htm

…and more — 243 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
- http://www.cdc.gov/rdc
- https://www.cdc.gov/nchs/nhis/2019_quest_redesign.htm
- https://www.cdc.gov/diabetes/healthy-eating/spotting-hidden-sugars-in-everyday-foods.html

---

## lang attribute must have a valid value (WCAG 3.1.2)

**Bug ID:** `VS-0eb181df`  
**Pattern ID:** `VS-dd1c019f`  
**URL:** 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/ncezid/resources/kap-guide.html  
**XPath / selector:** `div[data-post="814_67980"] > .list.dfe-curated-link__content > .dfe-curated-link__title > .cdc-block-link[lang="__"][target="_blank"]`  
**WCAG SC:** 3.1.2 — Language of Parts (Level AA)  
**Rule:** axe-core — `valid-lang` ([reference](https://dequeuniversity.com/rules/axe/4.12/valid-lang?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 8 instances; 1 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (8 weeks)

### HTML snippet
```html
<a lang="__" class="cdc-block-link" href="/ncezid/media/files/KINANDE-QUESTIONNAIRE-1-05_13_2022.docx" target="_blank">
```

### Description
lang attribute must have a valid value. Detected by axe-core rule valid-lang on 1 of 3330 scanned pages (8 instances).

### Steps to reproduce
1. Open https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/ncezid/resources/kap-guide.html.
2. Locate the element: div[data-post="814_67980"] > .list.dfe-curated-link__content > .dfe-curated-link__title > .cdc-block-link[lang="__"][target="_blank"]
3. Confirm the axe-core finding for rule valid-lang against WCAG 3.1.2 Language of Parts.

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

### Affected pages
- 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/ncezid/resources/kap-guide.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/valid-lang?application=axeAPI

---

## Element with lang attribute has correct language (WCAG 3.1.2)

**Bug ID:** `VS-5aa8aec6`  
**Pattern ID:** `VS-400f3a18`  
**URL:** 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/ncezid/resources/kap-guide.html  
**XPath / selector:** `@lang="__"`  
**WCAG SC:** 3.1.2 — Language of Parts (Level AA)  
**Rule:** Siteimprove Alfa — `sia-r7` ([reference](https://alfa.siteimprove.com/rules/sia-r7))  
**Severity:** Moderate  
**Frequency:** 8 instances; 1 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (2 weeks)

### Description
Element with lang attribute has correct language. Detected by Siteimprove Alfa rule sia-r7 on 1 of 3330 scanned pages (8 instances).

### Steps to reproduce
1. Open https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/ncezid/resources/kap-guide.html.
2. Locate the element: @lang="__"
3. Confirm the Siteimprove Alfa finding for rule sia-r7 against WCAG 3.1.2 Language of Parts.

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

### Affected pages
- 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/ncezid/resources/kap-guide.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-r7

---

## Text has enhanced contrast (WCAG 1.4.6)

**Bug ID:** `VS-f8aaaff0`  
**Pattern ID:** `VS-646b1e0b`  
**URL:** http://www.cdc.gov/rdc  
**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:** 20869 instances; 624 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Text has enhanced contrast. Detected by Siteimprove Alfa rule sia-r66 on 624 of 3330 scanned pages (20869 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/rdc.
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
- http://www.cdc.gov/rdc
- https://www.cdc.gov/nchs/nhis/2019_quest_redesign.htm
- https://www.cdc.gov/diabetes/healthy-eating/spotting-hidden-sugars-in-everyday-foods.html
- http://www.cdc.gov/niosh/bulletin/site.html
- https://www.cdc.gov/mmwr/volumes/70/ss/ss7008a1_appendix.htm
- https://www.cdc.gov/c-diff/resources/antibiotic-risk-factor.html
- http://www.cdc.gov/von-willebrand/about/index.html
- https://www.cdc.gov/clinical-standardization-programs/php/cvd/index.html
- https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table2.html
- http://www.cdc.gov/niosh-rtecs/WY280DE8.html
- https://www.cdc.gov/hepatitis-surveillance-2023/appendix/table-5-4.html
- http://www.cdc.gov/cancer/health-equity/what-cdc-is-doing.html
- https://www.cdc.gov/niosh/publications/numbered/2017-126.html
- http://www.cdc.gov/about/leadership/ncipc.html
- https://www.cdc.gov/niosh/veterinary/about
- http://www.cdc.gov/lyme/communication-resources/social-media-graphics.html
- https://www.cdc.gov/brfss/questionnaires/modules/category1999.htm
- https://www.cdc.gov/right-to-know/es/php/campaign-home/index.html
- http://www.cdc.gov/vessel-sanitation/cruise-ship-outbreaks/index.html
- http://www.cdc.gov/niosh/bulletin/2025/products_2024.html
- http://www.cdc.gov/niosh/bulletin/2017/national-police-week.html
- https://www.cdc.gov/hepatitis/statistics/2020surveillance/hepatitis-b/figure-2.3.htm
- https://www.cdc.gov/niosh/stress/about
- https://www.cdc.gov/tobacco/es/tobacco-features/spanish-world-no-tobacco-day.html
- https://www.cdc.gov/vhf/ebola/healthcare-us/ppe/guidance.html

…and more — 624 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
- http://www.cdc.gov/rdc
- https://www.cdc.gov/nchs/nhis/2019_quest_redesign.htm
- https://www.cdc.gov/diabetes/healthy-eating/spotting-hidden-sugars-in-everyday-foods.html

---

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

**Bug ID:** `VS-e4f2c427`  
**Pattern ID:** `VS-fbf54eba`  
**URL:** https://www.cdc.gov/nchs/nhis/2019_quest_redesign.htm  
**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:** 1785 instances; 252 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Link is distinguishable without relying on color. Detected by Siteimprove Alfa rule sia-r74 on 252 of 3330 scanned pages (1785 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/nchs/nhis/2019_quest_redesign.htm.
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/nchs/nhis/2019_quest_redesign.htm
- http://www.cdc.gov/niosh/bulletin/site.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- https://www.cdc.gov/niosh/publications/numbered/2017-126.html
- https://www.cdc.gov/niosh/veterinary/about
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5026md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001815.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00015081.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5846a5.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00021729.htm
- http://www.cdc.gov/niosh/bulletin/2025/products_2024.html
- http://www.cdc.gov/niosh/bulletin/2017/national-police-week.html
- https://www.cdc.gov/niosh/stress/about
- http://www.cdc.gov/niosh/bulletin/2015/nail-guns.html
- https://www.cdc.gov/niosh/publications/es/numbered/2010-138sp.html
- https://www.cdc.gov/niosh/extramural-programs/php/about_oep/study-section.html
- http://www.cdc.gov/pcd/issues/2010/may/09_0130_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/05_0009_fr.htm
- https://www.cdc.gov/niosh/publications/es/numbered/2009-112sp.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5509a5.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038048.htm
- http://www.cdc.gov/niosh/publications/numbered/2020-115.html
- http://www.cdc.gov/pcd/issues/2009/jan/08_0006_es.htm

…and more — 252 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/nchs/nhis/2019_quest_redesign.htm
- http://www.cdc.gov/niosh/bulletin/site.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.htm

---

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

**Bug ID:** `VS-2a1fd731`  
**Pattern ID:** `VS-2208081b`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.htm  
**XPath / selector:** `<p>`  
**WCAG SC:** 1.4.8 — Visual Presentation (Level AAA)  
**Rule:** Siteimprove Alfa — `sia-r73` ([reference](https://alfa.siteimprove.com/rules/sia-r73))  
**Severity:** Moderate  
**Frequency:** 54061 instances; 210 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Text has minimum contrast ratio of 4.5:1. Detected by Siteimprove Alfa rule sia-r73 on 210 of 3330 scanned pages (54061 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.htm.
2. Locate the element: <p>
3. Confirm the Siteimprove Alfa finding for rule sia-r73 against WCAG 1.4.8 Visual Presentation.

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

### Affected pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5026md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001815.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00015081.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5846a5.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00021729.htm
- http://www.cdc.gov/pcd/issues/2010/may/09_0130_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/05_0009_fr.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5509a5.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038048.htm
- http://www.cdc.gov/pcd/issues/2009/jan/08_0006_es.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6023a5.htm?s_cid=mm6023a5_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038177.htm
- https://www.cdc.gov/mmwR/preview/mmwrhtml/rr5707a1.htm
- https://www.cdc.gov/pcd/issues/2006/jan/05_0129_es.htm
- https://www.cdc.gov/pcd/issues/2015/14_0482.htm
- https://www.cdc.gov/pcd/issues/2011/jul/10_0135.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000620.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5006a3.htm
- http://www.cdc.gov/PCD/es/2009_jul_toc.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00018761.htm
- https://www.cdc.gov/pcd/for_reviewers/checklists/letter.htm
- https://www.cdc.gov/mmwr/volumes/65/wr/mm6541a3.htm?s_cid=mm6541a3_w

…and more — 210 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/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5026md.htm

---

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

**Bug ID:** `VS-757008d3`  
**Pattern ID:** `VS-cb53cc4d`  
**URL:** http://www.cdc.gov/rdc  
**XPath / selector:** `<button class="btn btn-outline-white btn-arrow-down btn-fancy" id="megaButton">`  
**WCAG SC:** 2.5.5 — Target Size (Enhanced) (Level AAA)  
**Rule:** Siteimprove Alfa — `sia-r111` ([reference](https://alfa.siteimprove.com/rules/sia-r111))  
**Severity:** Moderate  
**Frequency:** 22614 instances; 720 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Target size is at least 44×44 CSS pixels (Enhanced). Detected by Siteimprove Alfa rule sia-r111 on 720 of 3330 scanned pages (22614 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/rdc.
2. Locate the element: <button class="btn btn-outline-white btn-arrow-down btn-fancy" id="megaButton">
3. Confirm the Siteimprove Alfa finding for rule sia-r111 against WCAG 2.5.5 Target Size (Enhanced).

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

### Affected pages
- http://www.cdc.gov/rdc
- https://www.cdc.gov/nchs/nhis/2019_quest_redesign.htm
- https://www.cdc.gov/diabetes/healthy-eating/spotting-hidden-sugars-in-everyday-foods.html
- http://www.cdc.gov/niosh/bulletin/site.html
- https://www.cdc.gov/mmwr/volumes/70/ss/ss7008a1_appendix.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- https://www.cdc.gov/c-diff/resources/antibiotic-risk-factor.html
- http://www.cdc.gov/von-willebrand/about/index.html
- https://www.cdc.gov/clinical-standardization-programs/php/cvd/index.html
- https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table2.html
- http://www.cdc.gov/niosh-rtecs/WY280DE8.html
- https://www.cdc.gov/hepatitis-surveillance-2023/appendix/table-5-4.html
- http://www.cdc.gov/cancer/health-equity/what-cdc-is-doing.html
- https://www.cdc.gov/niosh/publications/numbered/2017-126.html
- http://www.cdc.gov/about/leadership/ncipc.html
- https://www.cdc.gov/niosh/veterinary/about
- http://www.cdc.gov/lyme/communication-resources/social-media-graphics.html
- https://www.cdc.gov/brfss/questionnaires/modules/category1999.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5026md.htm
- https://www.cdc.gov/right-to-know/es/php/campaign-home/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001815.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00015081.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5846a5.htm

…and more — 720 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
- http://www.cdc.gov/rdc
- https://www.cdc.gov/nchs/nhis/2019_quest_redesign.htm
- https://www.cdc.gov/diabetes/healthy-eating/spotting-hidden-sugars-in-everyday-foods.html

---

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

**Bug ID:** `VS-65aa612b`  
**Pattern ID:** `VS-f18df681`  
**URL:** https://www.cdc.gov/pcd/issues/2010/jul/09_0246.htm  
**XPath / selector:** `table[cellpadding="0"][width="100%"]:nth-child(5) > tbody > tr:nth-child(2)`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `region` ([reference](https://dequeuniversity.com/rules/axe/4.12/region?application=axeAPI))  
**Severity:** Serious  
**Frequency:** 23738 instances; 2924 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

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

### Description
All page content should be contained by landmarks. Detected by axe-core rule region on 2924 of 3330 scanned pages (23738 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2010/jul/09_0246.htm.
2. Locate the element: table[cellpadding="0"][width="100%"]:nth-child(5) > tbody > tr:nth-child(2)
3. Confirm the axe-core finding for rule region.

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

### Affected pages
- https://www.cdc.gov/pcd/issues/2010/jul/09_0246.htm
- http://www.cdc.gov/rdc
- 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/parasites/hcp/clinical-overview/index.html
- https://www.cdc.gov/pcd/issues/2013/13_0015.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026182.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015030.htm
- https://www.cdc.gov/nchs/nhis/2019_quest_redesign.htm
- https://www.cdc.gov/nchs/blog/posts/2026/07/quickstats-health-center-visit-rates-by-age-and-sex-united-states-2024.html
- http://www.cdc.gov/niosh/docs/mining/works/coversheet502.html
- https://www.cdc.gov/diabetes/healthy-eating/spotting-hidden-sugars-in-everyday-foods.html
- http://www.cdc.gov/iis/resources-refs/func-stds-v4-2-resource-guide.html
- https://www.cdc.gov/histoplasmosis/stories/index.html
- http://www.cdc.gov/laboratory/drugservice/index.html
- http://www.cdc.gov/nchs/births.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/ss6307a1.htm?s_cid=ss6307a1_w
- http://www.cdc.gov/niosh/bulletin/site.html
- http://www.cdc.gov/niosh/publications/numbered/2011-155.html
- https://www.cdc.gov/pcd/issues/2005/jan/04_0105.htm
- https://www.cdc.gov/mmwr/volumes/70/ss/ss7008a1_appendix.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a4.htm
- http://www.cdc.gov/niosh/bulletin/2017/pilot-training.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.htm
- https://www.cdc.gov/tobacco/campaign/tips/spanish/poblaciones/audiencia-general.html
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6603a2.htm?s_cid=mm6603a2_w
- https://www.cdc.gov/iqip/hcp/strategies/strong-vaccine-recommendation.html

…and more — 2924 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/pcd/issues/2010/jul/09_0246.htm
- http://www.cdc.gov/rdc
- 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/parasites/hcp/clinical-overview/index.html

---

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

**Bug ID:** `VS-8aba0a0b`  
**Pattern ID:** `VS-33841929`  
**URL:** https://www.cdc.gov/pcd/issues/2010/jul/09_0246.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:** 155 instances; 155 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

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

### Description
Form elements should have a visible label. Detected by axe-core rule label-title-only on 155 of 3330 scanned pages (155 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2010/jul/09_0246.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/2010/jul/09_0246.htm
- https://www.cdc.gov/pcd/issues/2005/jan/04_0105.htm
- http://www.cdc.gov/pcd/issues/2007/oct/06_0051.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0227_zhs.htm
- http://www.cdc.gov/pcd/issues/2009/apr/08_0067.htm
- http://www.cdc.gov/pcd/issues/2006/jul/05_0154.htm
- https://www.cdc.gov/pcd/issues/2009/apr/08_0141_es.htm
- http://www.cdc.gov/pcd/issues/2010/may/09_0130_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/05_0009_fr.htm
- https://www.cdc.gov/pcd/issues/2008/jan/07_0179.htm
- http://www.cdc.gov/pcd/issues/2009/jan/08_0006_es.htm
- https://www.cdc.gov/pcd/issues/2006/jan/05_0129_es.htm
- http://www.cdc.gov/pcd/issues/2008/jan/06_0153.htm
- http://www.cdc.gov/pcd/issues/2008/jan/07_0150_zhs.htm
- https://www.cdc.gov/pcd/issues/2004/apr/03_0017.htm
- https://www.cdc.gov/pcd/issues/2006/jan/05_0109.htm
- https://www.cdc.gov/pcd/issues/2011/jul/10_0135.htm
- http://www.cdc.gov/pcd/issues/2005/oct/05_0005.htm
- http://www.cdc.gov/pcd/issues/2008/apr/07_0202_es.htm
- http://www.cdc.gov/pcd/issues/2010/jul/09_0161.htm
- https://www.cdc.gov/pcd/issues/2009/jan/07_0243.htm
- http://www.cdc.gov/pcd/issues/2009/apr/08_0023.htm
- https://www.cdc.gov/pcd/issues/2006/apr/05_0175_es.htm
- http://www.cdc.gov/pcd/issues/2009/jul/09_0034.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0240_fr.htm

…and more — 155 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/2010/jul/09_0246.htm
- https://www.cdc.gov/pcd/issues/2005/jan/04_0105.htm
- http://www.cdc.gov/pcd/issues/2007/oct/06_0051.htm

---

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

**Bug ID:** `VS-1ad2a872`  
**Pattern ID:** `VS-8806389c`  
**URL:** http://www.cdc.gov/rdc  
**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:** 959 instances; 937 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 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 937 of 3330 scanned pages (959 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/rdc.
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
- http://www.cdc.gov/rdc
- 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/parasites/hcp/clinical-overview/index.html
- https://www.cdc.gov/nchs/nhis/2019_quest_redesign.htm
- https://www.cdc.gov/nchs/blog/posts/2026/07/quickstats-health-center-visit-rates-by-age-and-sex-united-states-2024.html
- https://www.cdc.gov/histoplasmosis/stories/index.html
- https://www.cdc.gov/iqip/hcp/strategies/strong-vaccine-recommendation.html
- http://www.cdc.gov/von-willebrand/about/index.html
- https://www.cdc.gov/model-aquatic-health-code/index.html
- https://www.cdc.gov/alcohol-pregnancy/hcp/alcoholsbi
- https://www.cdc.gov/biomonitoring/glossary/index.html
- https://www.cdc.gov/radiation-emergencies/features/be-ready.html
- http://www.cdc.gov/niosh/bulletin/2022/rpw.html
- https://www.cdc.gov/foodborne-outbreaks/php/data-research/summary-2024.html
- http://www.cdc.gov/niosh/bulletin/2009/respirators-and-masks.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/vaccines/php/imz-program-resources/awardee-websites.html
- https://www.cdc.gov/hepatitis-surveillance-2023/appendix/table-5-4.html
- http://www.cdc.gov/cancer/health-equity/what-cdc-is-doing.html
- http://www.cdc.gov/long-term-care-facilities/hcp/prevent-mdro/PPE.html
- http://www.cdc.gov/about/leadership/ncipc.html
- http://www.cdc.gov/cancer/es/risk-factors/family-health-history.html
- https://www.cdc.gov/niosh/veterinary/about
- https://www.cdc.gov/candida-auris/hcp/laboratories/real-time-pcr-identification.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/nchs/about/mission.html
- https://www.cdc.gov/health-literacy/php/evaluate/program-evaluation.html
- https://www.cdc.gov/firearm-violence/php/research-summaries/technology.html

…and more — 937 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
- http://www.cdc.gov/rdc
- 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/parasites/hcp/clinical-overview/index.html
- https://www.cdc.gov/nchs/nhis/2019_quest_redesign.htm

---

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

**Bug ID:** `VS-71c0a287`  
**Pattern ID:** `VS-d25f622d`  
**URL:** https://www.cdc.gov/pcd/issues/2010/jul/09_0246.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:** 1228 instances; 887 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### HTML snippet
```html
<h4>Paula M. Lantz, PhD; Andrew Pritchard, MPH</h4>
```

### Description
Heading levels should only increase by one. Detected by axe-core rule heading-order on 887 of 3330 scanned pages (1228 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2010/jul/09_0246.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/2010/jul/09_0246.htm
- https://www.cdc.gov/pcd/issues/2013/13_0015.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026182.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015030.htm
- http://www.cdc.gov/nchs/births.htm
- https://www.cdc.gov/pcd/issues/2005/jan/04_0105.htm
- https://www.cdc.gov/mmwr/volumes/70/ss/ss7008a1_appendix.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.htm
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6603a2.htm?s_cid=mm6603a2_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- https://www.cdc.gov/mmwr/volumes/72/wr/mm7208a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00017377.htm
- https://www.cdc.gov/tobacco/campaign/tips/asian/korean/asian-american.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5318a4.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00040052.htm
- http://www.cdc.gov/niosh-rtecs/WY280DE8.html
- https://www.cdc.gov/mmwr/volumes/71/wr/mm7144a2.htm?s_cid=mm7144a2_w
- https://www.cdc.gov/mmwr/volumes/71/wr/mm7145a2.htm?s_cid=mm7145a2_w
- http://www.cdc.gov/pcd/issues/2007/oct/06_0051.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0227_zhs.htm
- http://www.cdc.gov/mmwr/volumes/74/wr/mm7440a3.htm?s_cid=OS_mm7440a3_w
- https://www.cdc.gov/pcd/issues/2018/18_0150.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5444a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001815.htm

…and more — 887 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/2010/jul/09_0246.htm
- https://www.cdc.gov/pcd/issues/2013/13_0015.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026182.htm

---

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

**Bug ID:** `VS-ab604fce`  
**Pattern ID:** `VS-d5d82446`  
**URL:** https://www.cdc.gov/pcd/issues/2010/jul/09_0246.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:** 743 instances; 743 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

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

### Description
Document should have one main landmark. Detected by axe-core rule landmark-one-main on 743 of 3330 scanned pages (743 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/pcd/issues/2010/jul/09_0246.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/pcd/issues/2010/jul/09_0246.htm
- https://www.cdc.gov/pcd/issues/2013/13_0015.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026182.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015030.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/ss6307a1.htm?s_cid=ss6307a1_w
- https://www.cdc.gov/pcd/issues/2005/jan/04_0105.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5630a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- https://www.cdc.gov/flu/weekly/weeklyarchives2024-2025/data/iliage18.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5044a8.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5605a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00017377.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6340a12.htm?s_cid=mm6340a12_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5318a4.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00040052.htm
- http://www.cdc.gov/pcd/issues/2007/oct/06_0051.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0227_zhs.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr6105a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5444a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00015648.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5026md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001815.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00018185.htm

…and more — 743 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/pcd/issues/2010/jul/09_0246.htm
- https://www.cdc.gov/pcd/issues/2013/13_0015.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00026182.htm

---

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

**Bug ID:** `VS-1f919e6e`  
**Pattern ID:** `VS-fa44f293`  
**URL:** http://www.cdc.gov/comec/index.html  
**XPath / selector:** `html`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `page-has-heading-one` ([reference](https://dequeuniversity.com/rules/axe/4.12/page-has-heading-one?application=axeAPI))  
**Severity:** Moderate  
**Frequency:** 85 instances; 85 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

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

### Description
Page should contain a level-one heading. Detected by axe-core rule page-has-heading-one on 85 of 3330 scanned pages (85 instances).

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

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

### Affected pages
- http://www.cdc.gov/comec/index.html
- https://www.cdc.gov/flu/weekly/weeklyarchives2024-2025/data/iliage18.html
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6607md.htm?s_cid=mm6607md_w
- https://www.cdc.gov/nhsn/covid19/transition.html
- https://www.cdc.gov/narms/site.html
- https://www.cdc.gov/funding
- http://www.cdc.gov/addressing-sdoh-chronic-disease/index.html
- https://www.cdc.gov/campylobacter/site.html
- https://www.cdc.gov/flu/weekly/weeklyarchives2025-2026/data/senAllregt41.html
- http://www.cdc.gov/rat-bite-fever/site.html
- https://www.cdc.gov/set-net/index.html
- https://www.cdc.gov/ActEarly
- https://www.cdc.gov/measles/site.html
- https://www.cdc.gov/flu/weekly/weeklyarchives2023-2024/data/whoAllregt_phl15.html
- http://www.cdc.gov/children-mental-health/site.html
- http://www.cdc.gov/niosh/docs/2009-125/pdfs/2009-125.pdf%20
- http://www.cdc.gov/bmi/index.html
- https://www.cdc.gov/nbs/site.html
- https://www.cdc.gov/budget/index.html
- http://www.cdc.gov/kidney-disease
- http://www.cdc.gov/wastewater
- https://cdc.gov/hepatitis/index.html
- https://www.cdc.gov/disaster-epidemiology-and-response/php/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/media
- http://www.cdc.gov/partners/site.html

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

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

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

### Example pages
- http://www.cdc.gov/comec/index.html
- https://www.cdc.gov/flu/weekly/weeklyarchives2024-2025/data/iliage18.html
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6607md.htm?s_cid=mm6607md_w

---

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

**Bug ID:** `VS-290b5a2d`  
**Pattern ID:** `VS-0ba8ce9d`  
**URL:** http://www.cdc.gov/mmwr/volumes/70/rr/rr7004a1.htm?s_cid=rr7004a1_w  
**XPath / selector:** `td[align="center"]`  
**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:** 228 instances; 15 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### HTML snippet
```html
<td colspan="3" scope="col" align="center" valign="top"><strong>ASCCP, 2019, and ACOG, 2020</strong></td>
```

### Description
scope attribute should be used correctly. Detected by axe-core rule scope-attr-valid on 15 of 3330 scanned pages (228 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/mmwr/volumes/70/rr/rr7004a1.htm?s_cid=rr7004a1_w.
2. Locate the element: td[align="center"]
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/mmwr/volumes/70/rr/rr7004a1.htm?s_cid=rr7004a1_w
- http://www.cdc.gov/iis/code-sets/fall-season-respiratory-codes.html
- https://www.cdc.gov/fluview/surveillance/2026-week-05.html
- https://www.cdc.gov/pcd/issues/2016/16_0144.htm
- https://www.cdc.gov/flu/professionals/antivirals/summary-clinicians.htm
- https://www.cdc.gov/fluview/surveillance/2025-week-09.html
- http://www.cdc.gov/fluview/surveillance/2026-week-04.html
- https://www.cdc.gov/acip/evidence-to-recommendations/covid-19-bivalent-booster-etr.html
- https://www.cdc.gov/breastfeeding-data/mpinc/regional-report.html
- http://www.cdc.gov/std-ips/php/glossary/appendix-i.html
- https://www.cdc.gov/pcd/issues/2015/15_0301.htm
- https://www.cdc.gov/fluview/surveillance/2026-week-21.html
- https://www.cdc.gov/flu-vaccines-work/php/effectiveness-studies/index.html
- https://www.cdc.gov/fluview/surveillance/2025-week-37.html
- https://www.cdc.gov/pcd/issues/2015/14_0559.htm

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

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

### Example pages
- http://www.cdc.gov/mmwr/volumes/70/rr/rr7004a1.htm?s_cid=rr7004a1_w
- http://www.cdc.gov/iis/code-sets/fall-season-respiratory-codes.html
- https://www.cdc.gov/fluview/surveillance/2026-week-05.html

---

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

**Bug ID:** `VS-fd3e2a4b`  
**Pattern ID:** `VS-4edfe386`  
**URL:** https://www.cdc.gov/nhsn/covid19/transition.html  
**XPath / selector:** `a[href$="#cdc-search"]`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `skip-link` ([reference](https://dequeuniversity.com/rules/axe/4.12/skip-link?application=axeAPI))  
**Severity:** Moderate  
**Frequency:** 11 instances; 11 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### HTML snippet
```html
<a class="visually-hidden-focusable" href="#cdc-search">Skip directly to search</a>
```

### Description
The skip-link target should exist and be focusable. Detected by axe-core rule skip-link on 11 of 3330 scanned pages (11 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/nhsn/covid19/transition.html.
2. Locate the element: a[href$="#cdc-search"]
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/nhsn/covid19/transition.html
- https://www.cdc.gov/pcd/issues/2013/12_0084_es.htm
- https://www.cdc.gov/pcd/issues/2012/10_0254_es.htm
- http://www.cdc.gov/niosh/docs/2009-125/pdfs/2009-125.pdf%20
- https://www.cdc.gov/pcd/issues/2012/11_0340_es.htm
- https://www.cdc.gov/pcd/issues/2013/12_0224_es.htm
- https://www.cdc.gov/pcd/issues/2013/12_0202_es.htm
- https://www.cdc.gov/injury/wisqars/fatal/index.html
- https://www.cdc.gov/pcd/issues/2013/13_0028_es.htm
- https://www.cdc.gov/pcd/issues/2013/12_0340_es.htm
- https://www.cdc.gov/pcd/issues/2013/13_0030_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/nhsn/covid19/transition.html
- https://www.cdc.gov/pcd/issues/2013/12_0084_es.htm
- https://www.cdc.gov/pcd/issues/2012/10_0254_es.htm

---

## Contentinfo landmark should not be contained in another landmark (WCAG criterion undetermined)

**Bug ID:** `VS-3500f9f5`  
**Pattern ID:** `VS-424cced9`  
**URL:** https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres  
**XPath / selector:** `.cdc-footer`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `landmark-contentinfo-is-top-level` ([reference](https://dequeuniversity.com/rules/axe/4.12/landmark-contentinfo-is-top-level?application=axeAPI))  
**Severity:** Moderate  
**Frequency:** 3 instances; 3 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (5 weeks)

### HTML snippet
```html
<footer role="contentinfo" aria-label="Footer" class="cdc-footer noindex">
```

### Description
Contentinfo landmark should not be contained in another landmark. Detected by axe-core rule landmark-contentinfo-is-top-level on 3 of 3330 scanned pages (3 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres.
2. Locate the element: .cdc-footer
3. Confirm the axe-core finding for rule landmark-contentinfo-is-top-level.

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

### Affected pages
- https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres
- https://www.cdc.gov/howrightnow/espanol/index.html
- https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres/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/landmark-contentinfo-is-top-level?application=axeAPI

### Example pages
- https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres
- https://www.cdc.gov/howrightnow/espanol/index.html
- https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres/index.html

---

## Document should not have more than one banner landmark (WCAG criterion undetermined)

**Bug ID:** `VS-74096519`  
**Pattern ID:** `VS-054101da`  
**URL:** https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres  
**XPath / selector:** `.pt-2`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `landmark-no-duplicate-banner` ([reference](https://dequeuniversity.com/rules/axe/4.12/landmark-no-duplicate-banner?application=axeAPI))  
**Severity:** Moderate  
**Frequency:** 3 instances; 3 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (8 weeks)

### HTML snippet
```html
<header role="banner" aria-label="Header" class="pt-2 pb-2">
```

### Description
Document should not have more than one banner landmark. Detected by axe-core rule landmark-no-duplicate-banner on 3 of 3330 scanned pages (3 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres.
2. Locate the element: .pt-2
3. Confirm the axe-core finding for rule landmark-no-duplicate-banner.

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

### Affected pages
- https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres
- https://www.cdc.gov/howrightnow/espanol/index.html
- https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres/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:** Use only one banner landmark (<header> at the top level) per page.

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

### Example pages
- https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres
- https://www.cdc.gov/howrightnow/espanol/index.html
- https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres/index.html

---

## Document should not have more than one contentinfo landmark (WCAG criterion undetermined)

**Bug ID:** `VS-e096cb17`  
**Pattern ID:** `VS-b465dfd7`  
**URL:** https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres  
**XPath / selector:** `#app > footer`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `landmark-no-duplicate-contentinfo` ([reference](https://dequeuniversity.com/rules/axe/4.12/landmark-no-duplicate-contentinfo?application=axeAPI))  
**Severity:** Moderate  
**Frequency:** 3 instances; 3 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (5 weeks)

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

### Description
Document should not have more than one contentinfo landmark. Detected by axe-core rule landmark-no-duplicate-contentinfo on 3 of 3330 scanned pages (3 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres.
2. Locate the element: #app > footer
3. Confirm the axe-core finding for rule landmark-no-duplicate-contentinfo.

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

### Affected pages
- https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres
- https://www.cdc.gov/howrightnow/espanol/index.html
- https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres/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:** Use only one contentinfo landmark (<footer> at the top level) per page.

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

### Example pages
- https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres
- https://www.cdc.gov/howrightnow/espanol/index.html
- https://www.cdc.gov/howrightnow/espanol/recursos/sobrellevando-el-estres/index.html

---

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

**Bug ID:** `VS-7f813bfa`  
**Pattern ID:** `VS-4fac2f41`  
**URL:** http://www.cdc.gov/niosh/docs/mining/works/coversheet502.html  
**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:** 159 instances; 139 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### HTML snippet
```html
<img src="/niosh/media/images/2026/03/2008-100-thumb.png" alt="Technology News 528 - Recirculation Filter Is Key to Improving Dust Control in Enclosed Cabs" role="presentation">
```

### Description
ARIA role should be appropriate for the element. Detected by axe-core rule aria-allowed-role on 139 of 3330 scanned pages (159 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/niosh/docs/mining/works/coversheet502.html.
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
- http://www.cdc.gov/niosh/docs/mining/works/coversheet502.html
- http://www.cdc.gov/niosh/publications/numbered/2011-155.html
- https://www.cdc.gov/c-diff/resources/antibiotic-risk-factor.html
- http://www.cdc.gov/niosh/publications/numbered/2011-100.html
- http://www.cdc.gov/niosh/publications/numbered/2017-112.html
- http://www.cdc.gov/niosh/publications/numbered/2013-108.html
- http://www.cdc.gov/niosh/bulletin/2019/wikipedia-crowdsourcing.html
- http://www.cdc.gov/niosh/docs/2005-145
- https://www.cdc.gov/niosh/publications/es/numbered/2010-138sp.html
- https://www.cdc.gov/niosh/docs/2022-117
- https://www.cdc.gov/niosh/publications/es/numbered/2009-112sp.html
- https://www.cdc.gov/niosh/publications/numbered/2018-120.html
- https://www.cdc.gov/hiv/guidelines/persons.html
- http://www.cdc.gov/hiv-data/resources/mmp/mmp-calendars.html
- http://www.cdc.gov/niosh/docs/2023-134
- http://www.cdc.gov/niosh/publications/numbered/2016-166.html
- https://www.cdc.gov/niosh/docs/wp-solutions/2023-126
- http://www.cdc.gov/niosh/docs/mining/works/coversheet1429.html
- https://www.cdc.gov/niosh/topics/safetymatters
- http://www.cdc.gov/niosh/docs/2017-207
- https://www.cdc.gov/niosh/nmam
- http://www.cdc.gov/brfss/index.html
- https://www.cdc.gov/niosh/publications/numbered/2014-128.html
- http://www.cdc.gov/niosh/docs/96-110
- https://www.cdc.gov/niosh/docs/2025-106/default.html

…and more — 139 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
- http://www.cdc.gov/niosh/docs/mining/works/coversheet502.html
- http://www.cdc.gov/niosh/publications/numbered/2011-155.html
- https://www.cdc.gov/c-diff/resources/antibiotic-risk-factor.html

---

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

**Bug ID:** `VS-42e1cef4`  
**Pattern ID:** `VS-d69fc059`  
**URL:** https://www.cdc.gov/flu/weekly/weeklyarchives2024-2025/data/iliage18.html  
**XPath / selector:** `.text-center:nth-child(1)`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `empty-table-header` ([reference](https://dequeuniversity.com/rules/axe/4.12/empty-table-header?application=axeAPI))  
**Severity:** Minor  
**Frequency:** 148 instances; 45 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### HTML snippet
```html
<th class="text-center"></th>
```

### Description
Table header text should not be empty. Detected by axe-core rule empty-table-header on 45 of 3330 scanned pages (148 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/flu/weekly/weeklyarchives2024-2025/data/iliage18.html.
2. Locate the element: .text-center:nth-child(1)
3. Confirm the axe-core finding for rule empty-table-header.

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

### Affected pages
- https://www.cdc.gov/flu/weekly/weeklyarchives2024-2025/data/iliage18.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/measles/es/data-research/index.html
- http://www.cdc.gov/mmwr/volumes/70/rr/rr7004a1.htm?s_cid=rr7004a1_w
- https://www.cdc.gov/pcd/issues/2004/apr/03_0017.htm
- https://www.cdc.gov/pcd/issues/2011/jul/10_0135.htm
- http://www.cdc.gov/hepatitis-surveillance-2022/appendix/table-5-2.html
- https://www.cdc.gov/fluview/surveillance/2026-week-05.html
- https://www.cdc.gov/pcd/issues/2012/11_0093.htm
- http://www.cdc.gov/acip/grade/je-child.html
- https://www.cdc.gov/pcd/issues/2005/apr/04_0089.htm
- http://www.cdc.gov/mmwr/volumes/66/ss/ss6617a1.htm?s_cid=ss6617a1_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5924a4.htm?s_cid=mm5924a4_w
- https://cdc.gov/hepatitis/php/npr-2025/index.html
- https://www.cdc.gov/pcd/issues/2015/14_0478.htm
- https://www.cdc.gov/pcd/issues/2006/jan/05_0143.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6012md.htm?s_cid=mm6012md_w
- http://www.cdc.gov/asthma/asthma_stats/overuse.htm
- https://www.cdc.gov/pcd/issues/2015/15_0230.htm
- https://www.cdc.gov/asthma/nhis/08/table1-2.htm
- https://www.cdc.gov/fluview/surveillance/2025-week-09.html
- https://www.cdc.gov/ems-community-paramedicine/php/data-research/table2a.html
- https://www.cdc.gov/nhsn/about-nhsn/dua-faq.html
- http://www.cdc.gov/fluview/surveillance/2026-week-04.html
- https://www.cdc.gov/legionella/php/surveillance/surveillance-report-2020-2021.html
- https://www.cdc.gov/hepatitis/policy/npr/2022/index.htm

…and more — 45 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/flu/weekly/weeklyarchives2024-2025/data/iliage18.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/measles/es/data-research/index.html
- http://www.cdc.gov/mmwr/volumes/70/rr/rr7004a1.htm?s_cid=rr7004a1_w

---

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

**Bug ID:** `VS-e7af1264`  
**Pattern ID:** `VS-0066c67d`  
**URL:** 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/measles/es/data-research/index.html  
**XPath / selector:** `#\32 026_total_cases`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `empty-heading` ([reference](https://dequeuniversity.com/rules/axe/4.12/empty-heading?application=axeAPI))  
**Severity:** Minor  
**Frequency:** 35 instances; 29 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### HTML snippet
```html
<h5 id="2026_total_cases" style="font-weight: bold;"></h5>
```

### Description
Headings should not be empty. Detected by axe-core rule empty-heading on 29 of 3330 scanned pages (35 instances).

### Steps to reproduce
1. Open https://%5C%5C%5C%5Ccdc.gov%5C%5Cproject%5C%5COPHSS_CSELS_DPHID_MMWR_OD_Editors%5C%5CMMWR-WE%5C%5Cxxx%20-%20AUGUST%2021%5C%5CRoundtable%5C%5Cvqf8@cdc.gov/measles/es/data-research/index.html.
2. Locate the element: #\32 026_total_cases
3. Confirm the axe-core finding for rule empty-heading.

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

### Affected pages
- 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/measles/es/data-research/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5238a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5541a4.htm?s_cid=mm5541a4_e
- http://www.cdc.gov/nchs/injury/injury_matrices.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5608a2.htm
- https://www.cdc.gov/nchs/products/databriefs/db170.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5306a5.htm
- http://www.cdc.gov/asthma/nhis/default.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5403a5.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5138a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5532a4.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5608a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5317a3.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5124a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5432a4.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5411a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5445a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5150a2.htm
- http://www.cdc.gov/growthcharts/index.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5140a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5408a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5512a3.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/ss5210a1.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5120a1.htm
- http://www.cdc.gov/nhsn/about-nhsn/faq-agreement-to-participate.html

…and more — 29 pages total ([download CSV](csv/axe-core__empty-heading.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 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://%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/measles/es/data-research/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5238a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5541a4.htm?s_cid=mm5541a4_e

---

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

**Bug ID:** `VS-a37eb1a0`  
**Pattern ID:** `VS-f528778d`  
**URL:** http://www.cdc.gov/tb/statistics/reports/2022/default.htm  
**XPath / selector:** `img[alt="National Data"]`  
**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:** 10 instances; 3 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (13 weeks)

### HTML snippet
```html
<img decoding="async" src="/tb/statistics/reports/2021/images/NationalData.png?_=20440" alt="National Data" class="card-img-top img-fluid p-0 bg-purple-t">
```

### Description
Alternative text of images should not be repeated as text. Detected by axe-core rule image-redundant-alt on 3 of 3330 scanned pages (10 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/tb/statistics/reports/2022/default.htm.
2. Locate the element: img[alt="National Data"]
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/tb/statistics/reports/2022/default.htm
- https://www.cdc.gov/injury/wisqars/fatal/index.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/ss5210a1.htm

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

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

### Example pages
- http://www.cdc.gov/tb/statistics/reports/2022/default.htm
- https://www.cdc.gov/injury/wisqars/fatal/index.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/ss5210a1.htm

---

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

**Bug ID:** `VS-bad8ada8`  
**Pattern ID:** `VS-234b2c77`  
**URL:** http://www.cdc.gov/nssp/php/onboarding-resources/implementation-guides.html  
**XPath / selector:** `.dfe-block--width-standard.dfe-block--cdcmodule.cdc_raw_html:nth-child(5) > .dfe-block__inner > .dfe-block--cdcmodule.cdc_raw_html.dfe-block > .table-responsive > table`  
**WCAG SC:** _undetermined_  
**Rule:** axe-core — `table-duplicate-name` ([reference](https://dequeuniversity.com/rules/axe/4.12/table-duplicate-name?application=axeAPI))  
**Severity:** Minor  
**Frequency:** 4 instances; 2 of 3330 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W37 (8 weeks)

### HTML snippet
```html
<table class="table table-bordered" summary="Implementation Guides" data-preserve-inline-styles="true">
```

### Description
Tables should not have the same summary and caption. Detected by axe-core rule table-duplicate-name on 2 of 3330 scanned pages (4 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/nssp/php/onboarding-resources/implementation-guides.html.
2. Locate the element: .dfe-block--width-standard.dfe-block--cdcmodule.cdc_raw_html:nth-child(5) > .dfe-block__inner > .dfe-block--cdcmodule.cdc_raw_html.dfe-block > .table-responsive > table
3. Confirm the axe-core finding for rule table-duplicate-name.

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

### Affected pages
- http://www.cdc.gov/nssp/php/onboarding-resources/implementation-guides.html
- https://www.cdc.gov/flu/professionals/antivirals/summary-clinicians.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/table-duplicate-name?application=axeAPI

### Example pages
- http://www.cdc.gov/nssp/php/onboarding-resources/implementation-guides.html
- https://www.cdc.gov/flu/professionals/antivirals/summary-clinicians.htm

---

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

**Bug ID:** `VS-c5338190`  
**Pattern ID:** `VS-c18be945`  
**URL:** http://www.cdc.gov/rdc  
**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:** 8306 instances; 553 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Scrolling content can be accessed by keyboard. Detected by Siteimprove Alfa rule sia-r57 on 553 of 3330 scanned pages (8306 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/rdc.
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
- http://www.cdc.gov/rdc
- https://www.cdc.gov/nchs/nhis/2019_quest_redesign.htm
- https://www.cdc.gov/diabetes/healthy-eating/spotting-hidden-sugars-in-everyday-foods.html
- http://www.cdc.gov/niosh/bulletin/site.html
- https://www.cdc.gov/mmwr/volumes/70/ss/ss7008a1_appendix.htm
- https://www.cdc.gov/c-diff/resources/antibiotic-risk-factor.html
- http://www.cdc.gov/von-willebrand/about/index.html
- https://www.cdc.gov/clinical-standardization-programs/php/cvd/index.html
- https://www.cdc.gov/brfss/acbs/2012/prevalence_tables/table2.html
- http://www.cdc.gov/niosh-rtecs/WY280DE8.html
- https://www.cdc.gov/hepatitis-surveillance-2023/appendix/table-5-4.html
- http://www.cdc.gov/cancer/health-equity/what-cdc-is-doing.html
- https://www.cdc.gov/niosh/publications/numbered/2017-126.html
- http://www.cdc.gov/about/leadership/ncipc.html
- https://www.cdc.gov/niosh/veterinary/about
- http://www.cdc.gov/lyme/communication-resources/social-media-graphics.html
- https://www.cdc.gov/brfss/questionnaires/modules/category1999.htm
- https://www.cdc.gov/right-to-know/es/php/campaign-home/index.html
- http://www.cdc.gov/vessel-sanitation/cruise-ship-outbreaks/index.html
- http://www.cdc.gov/niosh/bulletin/2025/products_2024.html
- http://www.cdc.gov/niosh/bulletin/2017/national-police-week.html
- https://www.cdc.gov/hepatitis/statistics/2020surveillance/hepatitis-b/figure-2.3.htm
- https://www.cdc.gov/niosh/stress/about
- https://www.cdc.gov/tobacco/es/tobacco-features/spanish-world-no-tobacco-day.html
- https://www.cdc.gov/vhf/ebola/healthcare-us/ppe/guidance.html

…and more — 553 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
- http://www.cdc.gov/rdc
- https://www.cdc.gov/nchs/nhis/2019_quest_redesign.htm
- https://www.cdc.gov/diabetes/healthy-eating/spotting-hidden-sugars-in-everyday-foods.html

---

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

**Bug ID:** `VS-c5c67d47`  
**Pattern ID:** `VS-e05344b9`  
**URL:** http://www.cdc.gov/rdc  
**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:** 389 instances; 378 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
aria attribute is permitted for element role. Detected by Siteimprove Alfa rule sia-r18 on 378 of 3330 scanned pages (389 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/rdc.
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
- http://www.cdc.gov/rdc
- https://www.cdc.gov/nchs/nhis/2019_quest_redesign.htm
- https://www.cdc.gov/diabetes/healthy-eating/spotting-hidden-sugars-in-everyday-foods.html
- http://www.cdc.gov/niosh/bulletin/site.html
- https://www.cdc.gov/c-diff/resources/antibiotic-risk-factor.html
- http://www.cdc.gov/von-willebrand/about/index.html
- https://www.cdc.gov/clinical-standardization-programs/php/cvd/index.html
- https://www.cdc.gov/hepatitis-surveillance-2023/appendix/table-5-4.html
- http://www.cdc.gov/cancer/health-equity/what-cdc-is-doing.html
- https://www.cdc.gov/niosh/publications/numbered/2017-126.html
- http://www.cdc.gov/about/leadership/ncipc.html
- https://www.cdc.gov/niosh/veterinary/about
- http://www.cdc.gov/lyme/communication-resources/social-media-graphics.html
- https://www.cdc.gov/right-to-know/es/php/campaign-home/index.html
- http://www.cdc.gov/vessel-sanitation/cruise-ship-outbreaks/index.html
- http://www.cdc.gov/niosh/bulletin/2025/products_2024.html
- http://www.cdc.gov/niosh/bulletin/2017/national-police-week.html
- https://www.cdc.gov/niosh/stress/about
- https://www.cdc.gov/tobacco/es/tobacco-features/spanish-world-no-tobacco-day.html
- https://www.cdc.gov/vhf/ebola/healthcare-us/ppe/guidance.html
- http://www.cdc.gov/niosh/bulletin/2015/nail-guns.html
- http://www.cdc.gov/tb/es/risk-factors/factores-de-riesgo.html
- http://www.cdc.gov/diabetes/hcp/clinical-guidance/diabetes-podiatrist-health.html
- https://www.cdc.gov/niosh/publications/es/numbered/2010-138sp.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/measles/es/data-research/index.html

…and more — 378 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
- http://www.cdc.gov/rdc
- https://www.cdc.gov/nchs/nhis/2019_quest_redesign.htm
- https://www.cdc.gov/diabetes/healthy-eating/spotting-hidden-sugars-in-everyday-foods.html

---

## Headings are structured hierarchically (WCAG criterion undetermined)

**Bug ID:** `VS-c08a5856`  
**Pattern ID:** `VS-f054f4a4`  
**URL:** https://www.cdc.gov/mmwr/volumes/70/ss/ss7008a1_appendix.htm  
**XPath / selector:** `<h3 class="h3">`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r53` ([reference](https://alfa.siteimprove.com/rules/sia-r53))  
**Severity:** Moderate  
**Frequency:** 303 instances; 216 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Headings are structured hierarchically. Detected by Siteimprove Alfa rule sia-r53 on 216 of 3330 scanned pages (303 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/volumes/70/ss/ss7008a1_appendix.htm.
2. Locate the element: <h3 class="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/volumes/70/ss/ss7008a1_appendix.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- http://www.cdc.gov/niosh-rtecs/WY280DE8.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001815.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00015081.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00021729.htm
- https://www.cdc.gov/hepatitis/statistics/2020surveillance/hepatitis-b/figure-2.3.htm
- http://www.cdc.gov/pcd/issues/2010/may/09_0130_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/05_0009_fr.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5509a5.htm
- https://www.cdc.gov/mmwr/volumes/75/wr/mm7530a2.htm?s_cid=OS_mm7530a2_w
- http://www.cdc.gov/pcd/issues/2009/jan/08_0006_es.htm
- https://www.cdc.gov/niosh/ocas/gjoo.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038177.htm
- https://www.cdc.gov/pcd/issues/2006/jan/05_0129_es.htm
- https://www.cdc.gov/niosh/learning/publichealthburnoutprevention/module-4/outline.html
- https://www.cdc.gov/pcd/issues/2015/14_0482.htm
- https://www.cdc.gov/pcd/issues/2011/jul/10_0135.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000620.htm
- https://www.cdc.gov/niosh/ocas/ocasdose.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5006a3.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00018761.htm
- https://www.cdc.gov/mmwr/volumes/69/rr/rr6902a1.htm?s_cid=rr6902a1_w

…and more — 216 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/volumes/70/ss/ss7008a1_appendix.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm

---

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

**Bug ID:** `VS-4b59307b`  
**Pattern ID:** `VS-3d033717`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.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:** 152 instances; 152 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
No obsolete or deprecated elements are used. Detected by Siteimprove Alfa rule sia-r70 on 152 of 3330 scanned pages (152 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00001752.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/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5026md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001815.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00015081.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5846a5.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00021729.htm
- http://www.cdc.gov/pcd/issues/2010/may/09_0130_es.htm
- http://www.cdc.gov/pcd/issues/2006/oct/05_0009_fr.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5509a5.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038048.htm
- http://www.cdc.gov/pcd/issues/2009/jan/08_0006_es.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6023a5.htm?s_cid=mm6023a5_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038177.htm
- https://www.cdc.gov/mmwR/preview/mmwrhtml/rr5707a1.htm
- https://www.cdc.gov/pcd/issues/2006/jan/05_0129_es.htm
- https://www.cdc.gov/pcd/issues/2011/jul/10_0135.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000620.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5006a3.htm
- http://www.cdc.gov/PCD/es/2009_jul_toc.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00018761.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000543.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5420a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00000450.htm

…and more — 152 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/00001752.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5215a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5026md.htm

---

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

**Bug ID:** `VS-1076cf2f`  
**Pattern ID:** `VS-04a9d28c`  
**URL:** http://www.cdc.gov/pcd/issues/2007/oct/06_0051.htm  
**XPath / selector:** `body`  
**WCAG SC:** _undetermined_  
**Rule:** deprecated-html — `presentational-attr`  
**Severity:** Moderate  
**Frequency:** 14453 instances; 87 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

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

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

### Description
Presentational attribute (use CSS). Detected by deprecated-html rule presentational-attr on 87 of 3330 scanned pages (14453 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/pcd/issues/2007/oct/06_0051.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
- http://www.cdc.gov/pcd/issues/2007/oct/06_0051.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5444a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm
- http://www.cdc.gov/mmwr/volumes/73/wr/mm7345a1.htm?s_cid=mm7345a1_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00000425.htm
- https://www.cdc.gov/niosh/idlh/7664382.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5501a5.htm
- https://www.cdc.gov/mmwr/volumes/69/wr/mm6931e3.htm?s_cid=mm6931e3_w
- https://www.cdc.gov/pcd/issues/2015/14_0482.htm
- http://www.cdc.gov/pcd/issues/2008/jan/06_0153.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000620.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5238a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00016326.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00018761.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001725.htm
- https://www.cdc.gov/mmwr/volumes/69/rr/rr6902a1.htm?s_cid=rr6902a1_w
- http://www.cdc.gov/pcd/issues/2009/jan/07_0240_fr.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00052722.htm
- https://www.cdc.gov/pcd/issues/2019/18_0336.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5011a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5048a3.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5506a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4905md.htm
- https://www.cdc.gov/mmwr/volumes/66/wr/mm6622e1.htm?s_cid=mm6622e1_w
- https://www.cdc.gov/mmwr/volumes/65/wr/mm6544a4.htm

…and more — 87 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
- http://www.cdc.gov/pcd/issues/2007/oct/06_0051.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5444a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm

---

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

**Bug ID:** `VS-f1e84737`  
**Pattern ID:** `VS-91d2294a`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5444a4.htm  
**XPath / selector:** `font`  
**WCAG SC:** _undetermined_  
**Rule:** deprecated-html — `font-element`  
**Severity:** Moderate  
**Frequency:** 380 instances; 52 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 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 52 of 3330 scanned pages (380 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5444a4.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/mm5444a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00000425.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5501a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000620.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5238a2.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6104a5.htm?s_cid=mm6104a5_w
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00016326.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00018761.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001725.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00052722.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5011a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5048a3.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5506a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4905md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6104a6.htm
- https://www.cdc.gov/mmwr/volumes/65/wr/mm6544a4.htm
- http://www.cdc.gov/PCD/issues/2011/jul/10_0160_es.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5306a5.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038442.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00017951.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6249a7.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5608a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00014960.htm
- https://www.cdc.gov/pcd/issues/2011/jan/10_0030_es.htm

…and more — 52 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/mm5444a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00000425.htm

---

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

**Bug ID:** `VS-bd7467a8`  
**Pattern ID:** `VS-7118fead`  
**URL:** https://www.cdc.gov/narms/site.html  
**XPath / selector:** `{"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r61` ([reference](https://alfa.siteimprove.com/rules/sia-r61))  
**Severity:** Moderate  
**Frequency:** 51 instances; 51 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Form field label is visible. Detected by Siteimprove Alfa rule sia-r61 on 51 of 3330 scanned pages (51 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/narms/site.html.
2. Locate the element: {"type":"document","children":[{"type":"type","name":"html","publicId":null,"sys
3. Confirm the Siteimprove Alfa finding for rule sia-r61.

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

### Affected pages
- https://www.cdc.gov/narms/site.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6023a5.htm?s_cid=mm6023a5_w
- https://www.cdc.gov/set-net/index.html
- https://www.cdc.gov/ActEarly
- http://www.cdc.gov/children-mental-health/site.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6203a3.htm
- http://www.cdc.gov/bmi/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6104a6.htm
- https://www.cdc.gov/nbs/site.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6042a3.htm?s_cid=mm6042a3_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6118a5.htm?s_cid=mm6118a5_w
- https://www.cdc.gov/disaster-epidemiology-and-response/php/index.html
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6249a7.htm
- 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/media
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6447md.htm?s_cid=mm6447md_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/su6102a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5920a1.htm
- http://www.cdc.gov/vitalsigns/overdose-death-disparities/index.html
- https://www.cdc.gov/cancer/site.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6043a9.htm?s_cid=mm6043a9_w
- http://www.cdc.gov/hepatitis-c
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6349a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6012md.htm?s_cid=mm6012md_w
- https://www.cdc.gov/minorityhealth
- 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/vaccine-safety-systems/index.html

…and more — 51 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/narms/site.html
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6023a5.htm?s_cid=mm6023a5_w
- https://www.cdc.gov/set-net/index.html

---

## Table header has scope (WCAG criterion undetermined)

**Bug ID:** `VS-631de034`  
**Pattern ID:** `VS-2cd767ca`  
**URL:** http://www.cdc.gov/niosh/bulletin/site.html  
**XPath / selector:** `<h2 id="find-information" class="cdc-dfe-sitemap__panes-header">`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r78` ([reference](https://alfa.siteimprove.com/rules/sia-r78))  
**Severity:** Moderate  
**Frequency:** 64 instances; 42 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Table header has scope. Detected by Siteimprove Alfa rule sia-r78 on 42 of 3330 scanned pages (64 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/niosh/bulletin/site.html.
2. Locate the element: <h2 id="find-information" class="cdc-dfe-sitemap__panes-header">
3. Confirm the Siteimprove Alfa finding for rule sia-r78.

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

### Affected pages
- http://www.cdc.gov/niosh/bulletin/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/measles/es/data-research/index.html
- https://www.cdc.gov/acip/evidence-to-recommendations/JYNNEOS-orthopoxvirus-primary-hcp-etr.html
- https://www.cdc.gov/yellow-book/hcp/post-travel-evaluation/post-travel-dermatologic-conditions.html
- https://www.cdc.gov/mmwr/volumes/65/wr/mm6541a3.htm?s_cid=mm6541a3_w
- http://www.cdc.gov/children-mental-health/site.html
- https://www.cdc.gov/mmwr/volumes/66/ss/ss6625a1.htm?s_cid=ss6625a1_w
- https://www.cdc.gov/cannabis/es/site.html
- https://www.cdc.gov/nbs/site.html
- https://www.cdc.gov/mmwr/volumes/70/wr/mm7034a4.htm
- http://www.cdc.gov/mmwr/volumes/66/ss/ss6617a1.htm?s_cid=ss6617a1_w
- https://www.cdc.gov/mmwr/volumes/65/wr/mm6509a1.htm?s_cid=mm6509a1_w
- https://www.cdc.gov/mmwr/volumes/70/wr/mm7034a7.htm?s_cid=mm7034a7_w
- https://www.cdc.gov/art/php/national-summary/index.html
- https://www.cdc.gov/niosh/docket/archive/docket115.html
- https://www.cdc.gov/mmwr/volumes/65/ss/ss6501a1.htm
- http://www.cdc.gov/mmwr/volumes/71/wr/mm7147a1.htm?s_cid=mm7147a1_w
- https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5001a1.htm
- https://www.cdc.gov/nchs/injury/ice/washington2006/wdc_2006_friday.htm
- http://www.cdc.gov/sti-funding/site.html
- http://www.cdc.gov/nchs/hus/topics/cancer-deaths.htm
- https://www.cdc.gov/niosh/idlh/7440257.html
- https://www.cdc.gov/injury/wisqars/fatal/index.html
- https://www.cdc.gov/flu/treatment
- https://www.cdc.gov/mmwr/volumes/65/wr/mm6504a5.htm?s_cid=mm6504a5_w

…and more — 42 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
- http://www.cdc.gov/niosh/bulletin/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/measles/es/data-research/index.html
- https://www.cdc.gov/acip/evidence-to-recommendations/JYNNEOS-orthopoxvirus-primary-hcp-etr.html

---

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

**Bug ID:** `VS-ecd70676`  
**Pattern ID:** `VS-7845739d`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5444a4.htm  
**XPath / selector:** `big`  
**WCAG SC:** _undetermined_  
**Rule:** deprecated-html — `big-element`  
**Severity:** Moderate  
**Frequency:** 59 instances; 40 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

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

### Description
Obsolete <big> element (use CSS). Detected by deprecated-html rule big-element on 40 of 3330 scanned pages (59 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5444a4.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/mm5444a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00000425.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5501a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00000620.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5238a2.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00016326.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00018761.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00001725.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00052722.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5011a5.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5048a3.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5506a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4905md.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5306a5.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038442.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00017951.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5608a1.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00014960.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00015817.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00014869.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00000380.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5409a6.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00031525.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/ss5107a1.htm

…and more — 40 pages total ([download CSV](csv/deprecated-html__big-element.csv)).

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

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

### Example pages
- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5444a4.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00000425.htm

---

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

**Bug ID:** `VS-a3bb41d8`  
**Pattern ID:** `VS-20060f39`  
**URL:** http://www.cdc.gov/pcd/issues/2007/oct/06_0051.htm  
**XPath / selector:** `center`  
**WCAG SC:** _undetermined_  
**Rule:** deprecated-html — `center-element`  
**Severity:** Moderate  
**Frequency:** 57 instances; 19 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 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 19 of 3330 scanned pages (57 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/pcd/issues/2007/oct/06_0051.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
- http://www.cdc.gov/pcd/issues/2007/oct/06_0051.htm
- http://www.cdc.gov/pcd/issues/2008/jan/06_0153.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0240_fr.htm
- http://www.cdc.gov/PCD/issues/2011/jul/10_0160_es.htm
- http://www.cdc.gov/pcd/issues/2008/oct/08_0057_fr.htm
- https://www.cdc.gov/pcd/issues/2008/oct/07_0191.htm
- https://www.cdc.gov/pcd/issues/2011/jan/10_0030_es.htm
- http://www.cdc.gov/pcd/issues/2006/jan/05_0068_es.htm
- http://www.cdc.gov/fluview/surveillance/2026-week-04.html
- http://www.cdc.gov/pcd/issues/2005/apr/04_0063_zhs.htm
- http://www.cdc.gov/pcd/issues/2007/oct/06_0155_fr.htm
- https://www.cdc.gov/pcd/issues/2007/oct/07_0112_zht.htm
- https://www.cdc.gov/pcd/issues/2006/jan/05_0140.htm
- https://www.cdc.gov/pcd/issues/2009/oct/08_0158.htm
- http://www.cdc.gov/pcd/issues/2008/apr/07_0210_zht.htm
- http://www.cdc.gov/pcd/issues/2006/jan/05_0054_zhs.htm
- http://www.cdc.gov/pcd/issues/2005/apr/04_0128_es.htm
- http://www.cdc.gov/PCD/issues/2010/jul/toc.htm
- https://www.cdc.gov/pcd/issues/2008/apr/07_0205.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
- http://www.cdc.gov/pcd/issues/2007/oct/06_0051.htm
- http://www.cdc.gov/pcd/issues/2008/jan/06_0153.htm
- http://www.cdc.gov/pcd/issues/2009/jan/07_0240_fr.htm

---

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

**Bug ID:** `VS-19da4765`  
**Pattern ID:** `VS-3d3b2245`  
**URL:** https://www.cdc.gov/hepatitis/statistics/2020surveillance/hepatitis-b/figure-2.3.htm  
**XPath / selector:** `<div role="region" tabindex="0" class="map-container visualization-container bottom data us outline-none position-relative">`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r40` ([reference](https://alfa.siteimprove.com/rules/sia-r40))  
**Severity:** Moderate  
**Frequency:** 11 instances; 9 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Tables are used for tabular data, not layout. Detected by Siteimprove Alfa rule sia-r40 on 9 of 3330 scanned pages (11 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/hepatitis/statistics/2020surveillance/hepatitis-b/figure-2.3.htm.
2. Locate the element: <div role="region" tabindex="0" class="map-container visualization-container bottom data 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/hepatitis/statistics/2020surveillance/hepatitis-b/figure-2.3.htm
- 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/measles/es/data-research/index.html
- http://www.cdc.gov/mental-health/about-data/community-connection.html
- https://www.cdc.gov/prams/php/participating-states/index.html
- https://www.cdc.gov/salmonella/saintpaul-07-23/map.html
- https://www.cdc.gov/salmonella/thompson-10-23/map.html
- https://www.cdc.gov/hiv-data/mmp/index.html
- https://www.cdc.gov/salmonella/outbreaks/moringacapsules-02-26/locations.html
- http://www.cdc.gov/salmonella/php/data-research/repjeg02.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/hepatitis/statistics/2020surveillance/hepatitis-b/figure-2.3.htm
- 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/measles/es/data-research/index.html
- http://www.cdc.gov/mental-health/about-data/community-connection.html

---

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

**Bug ID:** `VS-3db4f52f`  
**Pattern ID:** `VS-f2542d87`  
**URL:** https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.htm  
**XPath / selector:** `<pre>`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r79` ([reference](https://alfa.siteimprove.com/rules/sia-r79))  
**Severity:** Moderate  
**Frequency:** 17 instances; 6 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Duplicate role landmark is labeled. Detected by Siteimprove Alfa rule sia-r79 on 6 of 3330 scanned pages (17 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/preview/mmwrhtml/00045941.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/00045941.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038177.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00056161.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00051880.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00054921.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00056485.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/00045941.htm
- http://www.cdc.gov/mmwr/preview/mmwrhtml/00038177.htm
- https://www.cdc.gov/mmwr/preview/mmwrhtml/00056161.htm

---

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

**Bug ID:** `VS-02f522c0`  
**Pattern ID:** `VS-3fb891c5`  
**URL:** http://www.cdc.gov/ncird/press-form/index.html  
**XPath / selector:** `<fieldset>`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r60` ([reference](https://alfa.siteimprove.com/rules/sia-r60))  
**Severity:** Moderate  
**Frequency:** 9 instances; 6 of 3330 pages affected
  
**History:** first seen 2026-W24, last seen 2026-W37 (14 weeks)

### Description
Input purpose can be determined. Detected by Siteimprove Alfa rule sia-r60 on 6 of 3330 scanned pages (9 instances).

### Steps to reproduce
1. Open http://www.cdc.gov/ncird/press-form/index.html.
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
- http://www.cdc.gov/ncird/press-form/index.html
- http://www.cdc.gov/mental-health/about-data/community-connection.html
- https://www.cdc.gov/mmwr/indrr_2001.html
- https://www.cdc.gov/pcd/issues/2013/13_0198.htm
- https://www.cdc.gov/mmwr/indss_2014.html
- https://www.cdc.gov/pcd/issues/2013/13_0030_es.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
- http://www.cdc.gov/ncird/press-form/index.html
- http://www.cdc.gov/mental-health/about-data/community-connection.html
- https://www.cdc.gov/mmwr/indrr_2001.html

---

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

**Bug ID:** `VS-10ad22bb`  
**Pattern ID:** `VS-c461a167`  
**URL:** https://www.cdc.gov/hepatitis/php/npr-2025/hep-c-reduce-infections.html  
**XPath / selector:** `<table class="table table-striped table-width-unset data-table horizontal" aria-live="assertive" aria-rowcount="2">`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r54` ([reference](https://alfa.siteimprove.com/rules/sia-r54))  
**Severity:** Moderate  
**Frequency:** 5 instances; 4 of 3330 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W37 (11 weeks)

### Description
Assertive live region is marked as atomic. Detected by Siteimprove Alfa rule sia-r54 on 4 of 3330 scanned pages (5 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/hepatitis/php/npr-2025/hep-c-reduce-infections.html.
2. Locate the element: <table class="table table-striped table-width-unset data-table horizontal" aria-live="assertive" aria-rowcount="2">
3. Confirm the Siteimprove Alfa finding for rule sia-r54.

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

### Affected pages
- https://www.cdc.gov/hepatitis/php/npr-2025/hep-c-reduce-infections.html
- https://www.cdc.gov/hepatitis/php/npr-2025/hep-c-reduce-deaths.html
- https://www.cdc.gov/nhsn/fhirportal/dqm/ach-dQMs.html
- https://www.cdc.gov/hepatitis/statistics/2021surveillance/hepatitis-c/figure-3.4.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-r54

### Example pages
- https://www.cdc.gov/hepatitis/php/npr-2025/hep-c-reduce-infections.html
- https://www.cdc.gov/hepatitis/php/npr-2025/hep-c-reduce-deaths.html
- https://www.cdc.gov/nhsn/fhirportal/dqm/ach-dQMs.html

---

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

**Bug ID:** `VS-6120ece2`  
**Pattern ID:** `VS-aa242c2d`  
**URL:** https://www.cdc.gov/howrightnow/espanol/emocion/soledad/index.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 3330 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W37 (12 weeks)

### Description
First focusable element is link to main content. Detected by Siteimprove Alfa rule sia-r87 on 3 of 3330 scanned pages (3 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/howrightnow/espanol/emocion/soledad/index.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/howrightnow/espanol/emocion/soledad/index.html
- https://www.cdc.gov/wtc/newsyouthcohortupdate_20240206.html
- http://www.cdc.gov/nchs/updates/feature-1.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/howrightnow/espanol/emocion/soledad/index.html
- https://www.cdc.gov/wtc/newsyouthcohortupdate_20240206.html
- http://www.cdc.gov/nchs/updates/feature-1.html

---

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

**Bug ID:** `VS-a3a22853`  
**Pattern ID:** `VS-7fbb8b20`  
**URL:** https://www.cdc.gov/mmwr/volumes/65/wr/mm6547md.htm?s_cid=mm6547md_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:** 2 instances; 2 of 3330 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W37 (12 weeks)

### Description
Element with orientation is not locked. Detected by Siteimprove Alfa rule sia-r59 on 2 of 3330 scanned pages (2 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/mmwr/volumes/65/wr/mm6547md.htm?s_cid=mm6547md_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/65/wr/mm6547md.htm?s_cid=mm6547md_w
- http://www.cdc.gov/nchs/updates/feature-1.html

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

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

### Example pages
- https://www.cdc.gov/mmwr/volumes/65/wr/mm6547md.htm?s_cid=mm6547md_w
- http://www.cdc.gov/nchs/updates/feature-1.html

---

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

**Bug ID:** `VS-d4276b54`  
**Pattern ID:** `VS-4c341c77`  
**URL:** https://www.cdc.gov/ncbddd/watchmetraining/module1.html  
**XPath / selector:** `<p>`  
**WCAG SC:** _undetermined_  
**Rule:** Siteimprove Alfa — `sia-r85` ([reference](https://alfa.siteimprove.com/rules/sia-r85))  
**Severity:** Moderate  
**Frequency:** 1 instances; 1 of 3330 pages affected
  
**History:** first seen 2026-W25, last seen 2026-W37 (10 weeks)

### Description
Keyboard trap does not exist. Detected by Siteimprove Alfa rule sia-r85 on 1 of 3330 scanned pages (1 instances).

### Steps to reproduce
1. Open https://www.cdc.gov/ncbddd/watchmetraining/module1.html.
2. Locate the element: <p>
3. Confirm the Siteimprove Alfa finding for rule sia-r85.

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

### Affected pages
- https://www.cdc.gov/ncbddd/watchmetraining/module1.html

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

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