www.cdc.gov: week 2026-W34
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Change this week
- New this week
- 0
- Fixed this week
- 0
- Regressed this week
- 6
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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 | 2957 | — | Wrap all page content in landmarks (header, nav, main, footer) so users can navigate by region. | pages (CSV) |
| Images must have alternative text (WCAG 1.1.1) (rule↗) | Critical | 628 | Without vision, Limited vision | Give every <img> a meaningful alt attribute. Use alt="" only for decorative images so screen readers skip them. | pages (CSV) |
| <html> element must have a lang attribute (WCAG 3.1.1) (rule↗) | Serious | 621 | Without vision, Limited cognitive, language, or learning ability | Add a lang attribute to <html> (e.g. lang="en"). | pages (CSV) |
| Heading levels should only increase by one (WCAG criterion undetermined) (rule↗) | Moderate | 962 | — | Use heading levels in order (h1 → h2 → h3) without skipping; structure, not size. | pages (CSV) |
| Elements must meet minimum color contrast ratio thresholds (WCAG 1.4.3) (rule↗) | Serious | 613 | Limited vision, Without color perception | 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. | pages (CSV) |
| Document should have one main landmark (WCAG criterion undetermined) (rule↗) | Moderate | 846 | — | Each page should have exactly one <main> landmark. | pages (CSV) |
| Landmarks should have a unique role or role/label/title (i.e. accessible name) c (WCAG criterion undetermined) (rule↗) | Moderate | 814 | — | 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 | 732 | — | See remediation guidance: https://alfa.siteimprove.com/rules/sia-r111 | pages (CSV) |
Progress
| Week | Critical | Serious | Moderate | Minor |
|---|---|---|---|---|
| 2026-W24 | 2 | 14 | 40 | 4 |
| 2026-W25 | 6 | 16 | 47 | 5 |
| 2026-W26 | 6 | 16 | 47 | 5 |
| 2026-W27 | 4 | 15 | 50 | 4 |
| 2026-W28 | 6 | 17 | 48 | 4 |
| 2026-W29 | 8 | 20 | 53 | 5 |
| 2026-W30 | 7 | 18 | 53 | 4 |
| 2026-W31 | 7 | 19 | 51 | 5 |
| 2026-W32 | 5 | 19 | 47 | 6 |
| 2026-W33 | 6 | 19 | 50 | 5 |
| 2026-W34 | 6 | 19 | 48 | 3 |
Dropped from this week's sample
- Moderate VS-388b5438 Scrollable element is keyboard accessible (WCAG 1.4.8)
- Moderate VS-054101da Document should not have more than one banner landmark (WCAG criterion undetermined)
- Minor VS-f528778d Alternative text of images should not be repeated as text (WCAG criterion undetermined)
- Minor VS-234b2c77 Tables should not have the same summary and caption (WCAG criterion undetermined)
- Moderate VS-4c341c77 Keyboard trap does not exist (WCAG criterion undetermined)
- Moderate VS-c461a167 Assertive live region is marked as atomic (WCAG criterion undetermined)
- Moderate VS-33b49e3b Info and Relationships (WCAG 1.3.1)
- Critical VS-e7298c00 Buttons must have discernible text (WCAG 4.1.2)
- Moderate VS-30db094d Banner landmark should not be contained in another landmark (WCAG criterion undetermined)
- Critical VS-f6d344d5 Certain ARIA roles must be contained by particular parents (WCAG 1.3.1)
- Serious VS-fa724f90 ARIA dialog and alertdialog nodes should have an accessible name (WCAG criterion undetermined)
This week at a glance 76 issue type(s)
- Median axe violations / page
- 5
- Pages with axe violations
- 2959 of 2960
- Median Alfa failures / page
- 83
- Pages with Alfa failures
- 737 of 737
- Unique pages audited
- 2960
- Lighthouse performance (median)
- 79/100 details
- Lighthouse SEO (median)
- 100/100
- Lighthouse best practices (median)
- 96/100
- Lighthouse agentic (median)
- 96/100
- Words per page (median)
- 736
- Reading ease (median)
- 44.7
- Reading grade (median)
- 12.4
- Misspellings
- 25+ distinct details
- Broken links
- 1495 details
- Median page weight
- 4.9 MB -114 KB better
- Median requests per page
- 44
- Estimated energy per page (mean)
- 1.3706 Wh
Scan coverage this week (3332 pages · 3735 succeeded of 4159 attempted)
| Engine | Pages | Coverage |
|---|---|---|
| axe | 2960 | 89% |
| resources | 2960 | 89% |
| standards | 1493 | 45% |
| plain-language | 1423 | 43% |
| alfa | 737 | 22% |
| sustainability | 328 | 10% |
| deprecated-html | 316 | 9% |
| security | 303 | 9% |
| lighthouse | 289 | 9% |
| tech | 284 | 9% |
Changes since 2026-W33 33 change(s)
axe-core
- New: aria-required-children appeared this week.
- New: area-alt appeared this week.
- New: aria-input-field-name appeared this week.
- Resolved: aria-dialog-name no longer fails on any scanned page.
- Resolved: button-name no longer fails on any scanned page.
- Resolved: image-redundant-alt no longer fails on any scanned page.
- Resolved: landmark-banner-is-top-level no longer fails on any scanned page.
- Resolved: landmark-no-duplicate-banner no longer fails on any scanned page.
- Resolved: aria-required-parent no longer fails on any scanned page.
- Resolved: table-duplicate-name no longer fails on any scanned page.
- landmark-unique shrank: 895 → 814 pages affected (rate: 30% → 28% of pages scanned).
- page-has-heading-one shrank: 188 → 118 pages affected (rate: 6% → 4% of pages scanned).
- heading-order spread: 874 → 962 pages affected (rate: 29% → 33% of pages scanned).
- color-contrast spread: 537 → 613 pages affected (rate: 18% → 21% of pages scanned).
- landmark-one-main spread: 752 → 846 pages affected (rate: 25% → 29% of pages scanned).
- html-has-lang spread: 516 → 621 pages affected (rate: 17% → 21% of pages scanned).
- image-alt spread: 528 → 628 pages affected (rate: 17% → 21% of pages scanned).
Alfa
- New: sia-r47 appeared this week.
- New: sia-r72 appeared this week.
- New: sia-r71 appeared this week.
- New: sia-r75 appeared this week.
- Resolved: sia-r54 no longer fails on any scanned page.
- Resolved: sia-r80 no longer fails on any scanned page.
- Resolved: sia-r76 no longer fails on any scanned page.
- Resolved: sia-r85 no longer fails on any scanned page.
- sia-r74 spread: 277 → 302 pages affected (rate: 37% → 41% of pages scanned).
- sia-r73 spread: 234 → 251 pages affected (rate: 31% → 34% of pages scanned).
- sia-r70 spread: 175 → 189 pages affected (rate: 23% → 26% of pages scanned).
- sia-r66 shrank: 646 → 616 pages affected (rate: 86% → 84% of pages scanned).
- sia-r18 shrank: 396 → 371 pages affected (rate: 53% → 50% of pages scanned).
- sia-r57 shrank: 551 → 523 pages affected (rate: 73% → 71% of pages scanned).
- sia-r14 shrank: 93 → 75 pages affected (rate: 12% → 10% of pages scanned).
- sia-r61 shrank: 91 → 71 pages affected (rate: 12% → 10% of pages scanned).
Embedded & linked resources
New this week (3840)
- https://www.cdc.gov/mmwr/volumes/72/ss/pdfs/ss7208a1-H.pdf
- https://www.cdc.gov/mmwr/volumes/72/ss/social-media/SS7208a1_Fatalities-Oil-and-Gas_IMAGE_29AUG2023_1200x675-medium.jpg?_=29572?noicon
- https://www.aphis.usda.gov/animal_health/one_health/downloads/sars-cov-2-guidance-for-farmed-mink.pdf
- https://www.aphis.usda.gov/publications/animal_health/sars-cov-2-mink-guidance.pdf
- http://www.commonwealthfund.org/usr_doc/mead_racialethnicdisparities_chartbook_1111.pdf
- http://www.cdc.gov/ncbddd/dh/chartbook/chartbook%20text.pdf
- http://www.surgeongeneral.gov/library/disabilities/calltoaction/calltoaction.pdf
- http://www.census.gov/prod/2006pubs/p60-231.pdf
- http://www.cdc.gov/nchs/data/misc/disability2001-2005.pdf
- http://www.who.int/vaccines-documents/docspdf01/www617.pdf
- http://www.un.org/esa/population/publications/wpp2006/English.pdf
- https://www.cdc.gov/mmwr/PDF/ss/ss4506.pdf
- https://www.cdc.gov/mmwr/PDF/ss/ss4505.pdf
- https://www.cdc.gov/mmwr/PDF/ss/ss4504.pdf
- https://www.cdc.gov/mmwr/PDF/ss/ss4503.pdf
- https://www.cdc.gov/mmwr/PDF/ss/ss4502.pdf
- https://www.cdc.gov/mmwr/PDF/ss/ss4501.pdf
- http://www.cdc.gov/wtc/pdfs/policies/PNP_SubmissionsPetitions%20_20260122-508.pdf
- http://www.cdc.gov/wtc/pdfs/Petition-for-Addition-of-a-New-WTC-Condition-en-508.pdf
- http://www.cdc.gov/foodborneoutbreaks/documents/ListeriaCaseReportFormOMB0920-0004.pdf
- http://www.cdc.gov/nip/vaccine/tdap/tdap_adult_recs.pdf
- http://www.cdc.gov/nip/recs/provisional_recs/tdap-preg.pdf
- http://www.cdc.gov/ncidod/dbmd/abcs/survreports/gas05prelim.pdf
- http://www.cdc.gov/nip/vaccine/varicella/varicella_acip_recs_prov_june_2006.pdf
- http://www.cdc.gov/mmwr/volumes/68/rr/pdfs/rr6801a1-H.pdf
- http://www.youtube-nocookie.com/embed/bXrVoKxvW0k?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/suicide/media/images/2025/01/SP-Playbook-Cost-Table.png
- https://www.cdc.gov/spanish/mediosdecomunicacion/comunicados/images/d_vs_ahogamiento_041424.png?_=07949?noicon
- http://www.cdc.gov/breastfeeding-data/media/pdfs/2024/05/mPINC-Ten-Steps-Assessment-Tool-Guide-508.pdf
- http://www.cdc.gov/breastfeeding-data/media/pdfs/2024/05/mPINC-Ten-Steps-Assessment-Tool-508.pdf
- http://www.cdc.gov/breastfeeding-data/media/files/2024/05/mPINC-Ten-Steps-Assessment-Tool-508.xlsx
- http://www.cdc.gov/breastfeeding-data/media/pdfs/2024/05/mPINC-Ten-Steps-Assessment-Tool-crosswalk-508.pdf
- https://www.google.com/recaptcha/api2/anchor?ar=1&k=6LedK2wUAAAAAFa2y93zQ5xqO1LxrSibC-wgExxf&co=aHR0cHM6Ly93d3cuY2RjLmdvdjo0NDM.&hl=en&v=XOqlk8PL_yVx6IdpLbpXdiLy&size=invisible&badge=inline&anchor-ms=40000&execute-ms=30000&cb=3jvuej8lrzpm
- https://www.google.com/recaptcha/api2/bframe?hl=en&v=XOqlk8PL_yVx6IdpLbpXdiLy&k=6LedK2wUAAAAAFa2y93zQ5xqO1LxrSibC-wgExxf&bft=0dAFcWeA53_aUcucMA7-y0G4TZ9LHdUKcTy8U8ZjUHv7GhE9eDeDQqDWvoN1B_5QJp_1bOSHnLiGYkp6fkuggTr6jpMxYHIR-VMQ
- http://immunise.health.gov.au/cool.pdf
- http://www.who.int/vaccines-documents/DocsPDF/www9661.pdf
- http://www.who.int/vaccines-documents/DocsPDF/www9804.pdf
- https://www.google.com/recaptcha/api2/anchor?ar=1&k=6LedK2wUAAAAAFa2y93zQ5xqO1LxrSibC-wgExxf&co=aHR0cHM6Ly9jZGMuZ292OjQ0Mw..&hl=en&v=XOqlk8PL_yVx6IdpLbpXdiLy&size=invisible&badge=inline&anchor-ms=20000&execute-ms=30000&cb=33jhpdgxa975
- https://www.google.com/recaptcha/api2/bframe?hl=en&v=XOqlk8PL_yVx6IdpLbpXdiLy&k=6LedK2wUAAAAAFa2y93zQ5xqO1LxrSibC-wgExxf&bft=0dAFcWeA5nbhkDwqs40Tq6SC3XTA_J3AfVO4499Gx8aZTG9_I5YzgE5AaLqxkLGxJcFRUcQVXc4NP9-dRvOiKdyHUE0Pd71p3OVA
- https://www.cdc.gov/pcd/issues/2018/pdf/17_0377.pdf
- http://www.cdc.gov/brfss/technical_infodata/surveydata/2007/compare_07.rtf
- http://www.cdc.gov/niosh/media/files/2026/04/2023-108Revised022024.zip
- http://www.cdc.gov/niosh/docs/2023-108/pdfs/2023-108_8.5x11.pdf
- http://www.cdc.gov/niosh/docs/2023-108/pdfs/2023-108_11x17.pdf
- http://www.cdc.gov/niosh/docs/2023-108/pdfs/2023-108_16x24.pdf
- https://www.youtube-nocookie.com/embed/Xmd_ddlzi_k?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.youtube-nocookie.com/embed/XUw4fCMIja0?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/mmwr/PDF/ss/ss5005.pdf
- https://www.cdc.gov/mmwr/PDF/ss/ss5004.pdf
- https://www.cdc.gov/mmwr/PDF/ss/ss5003.pdf
- https://www.cdc.gov/mmwr/PDF/ss/ss5002.pdf
- https://www.cdc.gov/mmwr/PDF/ss/ss5001.pdf
- https://www.cdc.gov/sickle-cell-research/media/images/Thumbnail_Thalassemia_SM_animation.jpg
- https://www.cdc.gov/sickle-cell-research/media/images/325216-A_IG_Thalassemia_FINAL-medium.jpg
- https://www.cdc.gov/sickle-cell-research/media/images/325216-A_IG_Thalassemia_left_side.jpg
- https://www.cdc.gov/sickle-cell-research/media/images/325216_Thalassemia_LARGE_animation.gif
- https://www.cdc.gov/sickle-cell-research/media/videos/325216_Thalassemia_SM_animation.mp4
- http://www.cdc.gov/niosh/docs/2003-154/pdfs/7500.pdf
- http://www.cdc.gov/niosh/docs/2003-154/pdfs/7601.pdf
- http://www.cdc.gov/niosh/docs/2003-154/pdfs/7602.pdf
- https://www.cdc.gov/niosh/motor-vehicle/constructionequipmentvisibilitydiagram/images/blindarea/backhoeloaders/800px/terex760-grd.jpg
- https://www.cdc.gov/niosh/motor-vehicle/constructionequipmentvisibilitydiagram/images/blindarea/backhoeloaders/1024px/terex760-grd.jpg
- https://www.cdc.gov/niosh/motor-vehicle/constructionequipmentvisibilitydiagram/images/blindarea/backhoeloaders/800px/terex760-900.jpg
- https://www.cdc.gov/niosh/motor-vehicle/constructionequipmentvisibilitydiagram/images/blindarea/backhoeloaders/1024px/terex760-900.jpg
- https://www.cdc.gov/niosh/motor-vehicle/constructionequipmentvisibilitydiagram/images/blindarea/backhoeloaders/800px/terex760-1500.jpg
- https://www.cdc.gov/niosh/motor-vehicle/constructionequipmentvisibilitydiagram/images/blindarea/backhoeloaders/1024px/terex760-1500.jpg
- http://www.guttmacher.org/pubs/win/contraceptive-needs-2008.pdf
- https://www.cdc.gov/pcd/issues/2016/pdf/15_0505.pdf
- https://www.cdc.gov/niosh/docs/2010-114/pdfs/2010-114.pdf
- https://www.cdc.gov/niosh/media/images/2026/05/2010-114.jpg
- https://www.cdc.gov/niosh/media/pdfs/2026/04/2010-114hat.pdf
- https://www.cdc.gov/niosh/media/pdfs/2026/04/2010-114vie.pdf
- http://www.cdc.gov/niosh/media/pdfs/2026/03/2004-133.pdf
- https://www.cdc.gov/ebola/media/images/2026/01/webmap_ebola_18Dec2025.png
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2536233/pdf/bullwho00102-0107.pdf
- https://www.bmj.com/content/bmj/2/6086/541.full.pdf
- https://pathexo.societe-mtsi.fr/documents/articles-bull/T97-3-2450-7p.pdf
- https://iris.who.int/bitstream/handle/10665/229972/WER7147.PDF?sequence=1
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2395567/pdf/bullwho00439-0113.pdf
- https://www.cdc.gov/climate-health/media/pdfs/2024/06/SOUTHWEST__Regional_Factsheet.pdf
- https://www.cdc.gov/mmwr/volumes/71/wr/pdfs/mm7107a1-H.pdf
- https://www.cdc.gov/vaccines/hcp/acip-recs/general-recs/downloads/generalrecs.pdf
- https://www.cdc.gov/brfss/acbs/2019/pdf/sdq_report_acbs_19-508.pdf
- https://www.cdc.gov/pcd/issues/2025/pdf/24_0539.pdf
- https://www.cdc.gov/nchs/data/databriefs/db103.pdf
- https://www.cdc.gov/sickle-cell-research/modules/SCDC-Data-Tables_IN_NBS.xlsx
- http://www.fda.gov/downloads/BiologicsBloodVaccines/Vaccines/ApprovedProducts/UCM426457.pdf
- https://www.cdc.gov/mmwr/volumes/72/wr/pdfs/mm7216a3-H.pdf
- https://www.cdc.gov/pcd/issues/2020/pdf/20_0213.pdf
- https://www.cdc.gov/mmwr/volumes/69/wr/pdfs/mm6950a2-H.pdf
- https://www.cdc.gov/habs/pdf/ohhabs-case-and-event-definitions-table-508.pdf
- https://www.epa.gov/sites/production/files/2017-06/documents/cyanotoxins-fact_sheet-2015.pdf
- https://www.youtube-nocookie.com/embed/7WKdUU--5eA?autohide=0&enablejsapi=1&playerapiid=39759&modestbranding=1&rel=0&origin=https://www.cdc.gov&showinfo=0//www.youtube-nocookie.com/embed/7WKdUU--5eA?autohide=0&enablejsapi=1&playerapiid=39759&modestbranding=1&rel=0&origin=https://www.cdc.gov&showinfo=0&wmode=opaque?enablejsapi=1
- https://9866052.fls.doubleclick.net/activityi;src=9866052;type=cdctips;cat=top100q;rcb=15;ord=1;num=6208012122437;npa=0;auiddc=1957540390.1787221406;uaa=x86;uab=64;uafvl=Chromium%3B148.0.7778.96%7CHeadlessChrome%3B148.0.7778.96%7CNot%252FA)Brand%3B99.0.0.0;uamb=0;uam=;uap=Windows;uapv=;uaw=0;pscdl=noapi;frm=0;_tu=aJA;gtm=45fe68i1v9178920917z8852963185za200zd9178920917xea;gcd=13l3l3l3l1l1;dma=0;dc_fmt=2;tag_exp=115938466~115938468~117776795~118897920~118897930~119367802~119367810~119791749~120213116~120385422;epver=2;dc_random=1787223076_SUNfn6T6BtSKKiM85XzXLi3YG0F_hoT5Pw;_dc_test=1;~oref=https%3A%2F%2Fwww.cdc.gov%2Ftobacco%2Fcampaign%2Ftips%2Fquit-smoking%2Fquitline%2Ftop-10-questions-people-ask-about-quitlines.html?
- http://www.cdc.gov/tb/media/pdfs/Prioritizing_Tuberculosis_Genotype_Clusters.pdf
- https://www.cdc.gov/mmwr/volumes/70/wr/pdfs/mm7006e2-H.pdf
- https://www.who.int/docs/default-source/coronaviruse/risk-comms-updates/update-36-long-term-symptoms.pdf?sfvrsn=5d3789a6_2
- https://www.colorado.gov/governor/sites/default/files/inline-files/D%202020%20138%20Mask%20Order.pdf
- https://portal.ct.gov/-/media/Office-of-the-Governor/Executive-Orders/Lamont-Executive-Orders/Executive-Order-No-7BB.pdf
- https://governor.maryland.gov/wp-content/uploads/2020/04/Masks-and-Physical-Distancing-4.15.20.pdf
| Type | Count |
|---|---|
| PDF documents | 4319 |
| Images | 574 |
| Archives (zip, etc.) | 405 |
| Embedded media players | 175 |
| Video files | 138 |
| Spreadsheets | 135 |
| Iframes | 99 |
| Word/text documents | 24 |
| Audio files | 22 |
| Presentations | 14 |
| Embeds / objects | 5 |