www.cdc.gov: week 2026-W24
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Change this week
- New this week
- 60
- Fixed this week
- 0
- Regressed this week
- 0
Exclude URLs from this report
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Findings scoped to your excluded URLs, matching this view (counts use the same up-to-25-page sample).
Fix these first
| Issue | Severity | Pages | Who it affects | How to fix | Evidence |
|---|---|---|---|---|---|
| All page content should be contained by landmarks (WCAG criterion undetermined) (rule↗) | Serious | 812 | — | Wrap all page content in landmarks (header, nav, main, footer) so users can navigate by region. | pages (CSV) |
| Landmarks should have a unique role or role/label/title (i.e. accessible name) c (WCAG criterion undetermined) (rule↗) | Moderate | 360 | — | 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. | pages (CSV) |
| Target size is at least 44×44 CSS pixels (Enhanced) (WCAG 2.5.5) (rule↗) | Moderate | 301 | — | See remediation guidance: https://alfa.siteimprove.com/rules/sia-r111 | pages (CSV) |
| Text has enhanced contrast (WCAG 1.4.6) (rule↗) | Moderate | 281 | — | Increase text contrast to meet WCAG AAA (7:1). | pages (CSV) |
| Scrolling content can be accessed by keyboard (WCAG criterion undetermined) (rule↗) | Moderate | 270 | — | See remediation guidance: https://alfa.siteimprove.com/rules/sia-r57 | pages (CSV) |
| aria attribute is permitted for element role (WCAG criterion undetermined) (rule↗) | Moderate | 226 | — | Only use ARIA states/properties that are allowed on this element/role. | pages (CSV) |
| Images must have alternative text (WCAG 1.1.1) (rule↗) | Critical | 95 | Without vision, Limited vision | Give every <img> a meaningful alt attribute. Use alt="" only for decorative images so screen readers skip them. | pages (CSV) |
| Text has sufficient color contrast (Enhanced) (WCAG 1.4.3) (rule↗) | Moderate | 151 | Limited vision, Without color perception | Increase text contrast to meet WCAG AA (4.5:1, or 3:1 for large text). | pages (CSV) |
Progress
This week at a glance 60 issue type(s)
- Median axe violations / page
- 5
- Pages with axe violations
- 812 of 812
- Median Alfa failures / page
- 99
- Pages with Alfa failures
- 301 of 301
- Unique pages audited
- 812
- Lighthouse performance (median)
- 82/100 details
- Lighthouse SEO (median)
- 100/100
- Lighthouse best practices (median)
- 100/100
- Words per page (median)
- 624
- Reading ease (median)
- 43.1
- Reading grade (median)
- 12.3
- Misspellings
- 25+ distinct details
- Broken links
- 104 details
- Median page weight
- 5.3 MB
- Median requests per page
- 44
- Estimated energy per page (mean)
- 1.0141 Wh
Scan coverage this week (833 pages)
| Engine | Pages | Coverage |
|---|---|---|
| axe | 812 | 97% |
| sustainability | 812 | 97% |
| deprecated-html | 743 | 89% |
| resources | 451 | 54% |
| plain-language | 345 | 41% |
| alfa | 301 | 36% |
| lighthouse | 99 | 12% |
Embedded & linked resources
New this week (732)
- https://www.cdc.gov/tb/media/pdfs/What_You_Need_to_Know_About_TB.pdf
- https://www.cdc.gov/zika/media/images/346325ZikaTransmissionCycles1200x67501.png
- https://www.cdc.gov/mmwr/volumes/75/wr/pdfs/mm7509a1-H.pdf
- https://www.cdc.gov/mmwr/volumes/75/wr/pdfs/mm7509-H.pdf
- https://cdn.ymaws.com/www.cste.org/resource/resmgr/PS/12-ID-07FINAL.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4353.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4351.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4350.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4349.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4348.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4347.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4346.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4345.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4344.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4343.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4342.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4341.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4340.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4339.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4338.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4337.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4336.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4335.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4334.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4333.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4332.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4331.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4330.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4329.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4328.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4327.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4326.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4325.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4324.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4323.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4322.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4321.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4320.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4319.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4318.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4317.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4316.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4315.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4314.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4313.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4312.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4311.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4310.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4309.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4308.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4307.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4306.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4305.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4304.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4303.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4302.pdf
- https://www.cdc.gov/mmwr/PDF/wk/mm4301.pdf
- https://www.cdc.gov/infectioncontrol/projectfirstline/videos/RecognizeRisks-LowRes.mp4
- https://www.youtube-nocookie.com/embed/DTaelg1Ogb0?autohide=0&enablejsapi=1&modestbranding=1&rel=0&origin=https://www.cdc.gov?autohide=0&enablejsapi=1&modestbranding=1&rel=0&origin=https://www.cdc.gov&wmode=opaque?enablejsapi=1
- https://www.cdc.gov/museum/pdf/cdcm-pha-stem-making-water-safe-lesson.pdf
- https://www.cdc.gov/museum/pdf/cdcm-pha-stem-making-water-safe-instructions.pdf
- https://www.cdc.gov/museum/pdf/cdcm-pha-stem-making-water-safe-students.pdf
- https://www.cdc.gov/museum/pdf/cdcm-pha-stem-making-water-safe-students.docx
- https://www.cdc.gov/museum/pdf/cdcm-pha-stem-making-water-safe-slides.pptx
- https://www.cdc.gov/museum/pdf/cdcm-pha-stem-making-water-safe-slides.pdf
- https://www.cdc.gov/museum/pdf/ghomuseumbrochure.pdf
- https://www.cdc.gov/museum/pdf/ghomuseumpresssheet.pdf
- https://www.cdc.gov/healthy-swimming/media/pdfs/fecal-incident-response-guidelines.pdf
- https://www.cdc.gov/nceh/ehs/Docs/Investigation_of_Employee_Symptoms_at_an_Indoor_Waterpark.pdf
- https://www.cdc.gov/project-firstline/media/pdfs/PFL-JournalClubArticle1-508.pdf
- https://www.cdc.gov/project-firstline/media/pdfs/PFL-JournalClubArticle2-508.pdf
- https://www.cdc.gov/project-firstline/media/pdfs/PFL-JournalClubArticle3-508.pdf
- https://www.cdc.gov/project-firstline/media/pdfs/PFL-JournalClubArticle4-508.pdf
- https://www.cdc.gov/project-firstline/media/pdfs/PFL-JournalClubArticle5-508.pdf
- https://www.cdc.gov/project-firstline/media/pdfs/PFL-JournalClubArticle6-508.pdf
- https://www.cdc.gov/project-firstline/media/pdfs/PFL-JournalClubArticle7-508.pdf
- https://www.cdc.gov/project-firstline/media/pdfs/PFL-JournalClubArticle8-508.pdf
- https://www.cdc.gov/project-firstline/media/pdfs/PFL-LearningActivityEnvironmentalScan-508.pdf
- https://www.cdc.gov/project-firstline/media/pdfs/PFL-LearningActivityCaseStudy1-508.pdf
- https://www.cdc.gov/project-firstline/media/pdfs/PFL-Learning-ActivityCaseStudy2-508.pdf
- https://www.cdc.gov/project-firstline/media/pdfs/PFL-LearningActivityResearchInfectionControlQuestions-508.pdf
- https://www.cdc.gov/project-firstline/media/pdfs/PFL-LearningActivityJobAids-508.pdf
- https://www.cdc.gov/project-firstline/media/pdfs/PFL-LearningActivityInTheNews-508.pdf
- https://www.cdc.gov/project-firstline/media/pdfs/PFL-LearningActivitySocialMediaInfectionControl-508.pdf
- https://www.cdc.gov/project-firstline/media/pdfs/PFL-LearningActivtyPSAs-508.pdf
- https://www.cdc.gov/healthy-schools/media/pdfs/P4HS_BeforeAfterPA.pdf
- https://www.shapeamerica.org/Common/Uploaded%20files/uploads/pdfs/2018/advocacy/position-statements/Before-and-After-School-Physical-Activity.pdf
- https://www.cdc.gov/places/multimedia/images/places-button-green-240x200-2.jpg
- https://www.cdc.gov/places/multimedia/images/places-button-green-240x200-1.png
- https://www.cdc.gov/places/multimedia/images/places-button-white-240x200-2.jpg
- https://www.cdc.gov/places/multimedia/images/places-button-white-240x200-1.png
- https://www.cdc.gov/places/media/images/2024/10/PLACES_Toolkit-Button.jpg
- https://www.cdc.gov/vaccines/terms/media/Acellular_Vaccine.mp3
- https://www.cdc.gov/vaccines/terms/media/Acute.mp3
- https://www.cdc.gov/vaccines/terms/media/Adjuvent.mp3
- https://www.cdc.gov/vaccines/terms/media/Anaphylaxis.mp3
- https://www.cdc.gov/vaccines/terms/media/Anthrax.mp3
- https://www.cdc.gov/vaccines/terms/media/Antibiotic.mp3
- https://www.cdc.gov/vaccines/terms/media/Antibody.mp3
- https://www.cdc.gov/vaccines/terms/media/Antigens.mp3
| Type | Count |
|---|---|
| PDF documents | 522 |
| Audio files | 80 |
| Images | 35 |
| Embedded media players | 32 |
| Spreadsheets | 20 |
| Video files | 17 |
| Word/text documents | 15 |
| Iframes | 8 |
| Presentations | 3 |