vital-scans open quality ledger

www.cdc.gov: week 2026-W32

This is the 2026-W32 ISO-week report (3333 pages fetched, 3016 unique pages audited by axe/Alfa). Generated 2026-08-07. Compared against 2026-W31 (3333 fetched). The dashboard headline uses a rolling last-7-days window; this page is the full ISO week. Machine-readable API: snapshot.json · findings.json.

Primary standards queue: 0 required finding type(s) (handling: report). Verification queue: 38 required finding type(s) (handling: review). Aspirational queue: 0 finding type(s). Advisory queue: 0 finding type(s). Unmapped review queue: 18 finding type(s).

New this week
0
Fixed this week
0
Regressed this week
4

Fix these first

Highest-leverage issues, ranked by pages affected × severity × people reached. Fixing a shared component often clears many pages at once. Issue links go to the full bug detail on the Accessibility page.

Top 8 issues to prioritize this week.
IssueSeverityPagesWho it affectsHow to fixEvidence
All page content should be contained by landmarks (WCAG criterion undetermined) (rule↗) Serious 3013 — 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 587 Without vision, Limited vision Give every <img> a meaningful alt attribute. Use alt="" only for decorative images so screen readers skip them. pages (CSV)
Heading levels should only increase by one (WCAG criterion undetermined) (rule↗) Moderate 984 — Use heading levels in order (h1 → h2 → h3) without skipping; structure, not size. pages (CSV)
<html> element must have a lang attribute (WCAG 3.1.1) (rule↗) Serious 578 Without vision, Limited cognitive, language, or learning ability Add a lang attribute to <html> (e.g. lang="en"). pages (CSV)
Elements must meet minimum color contrast ratio thresholds (WCAG 1.4.3) (rule↗) Serious 606 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 813 — 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 808 — 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 761 — See remediation guidance: https://alfa.siteimprove.com/rules/sia-r111 pages (CSV)

Progress

Open findings by severity over 9 weeks (lower is better)
Critical Serious Moderate Minor W24W28W32530

Dropped from this week's sample

These stopped appearing in scan results, but their pages were not re-checked this week — this is not a confirmed fix.

This week at a glance 77 issue type(s)
Median axe violations / page
5
Pages with axe violations
3016 of 3016
Median Alfa failures / page
85
Pages with Alfa failures
764 of 764
Unique pages audited
3016
Lighthouse performance (median)
82/100 299 sampled details
Lighthouse SEO (median)
100/100
Lighthouse best practices (median)
96/100
Lighthouse agentic (median)
96/100
Words per page (median)
781 main content, nav excluded
Reading ease (median)
45.1 1311 prose pages
Reading grade (median)
12.4
Misspellings
25+ distinct details
Broken links
1091 details
Median page weight
5.0 MB -82 KB better
Median requests per page
44
Estimated energy per page (mean)
1.6214 Wh
Scan coverage this week (3333 pages · 3586 succeeded of 3937 attempted)
Pages each engine ran on, per the configured weekly sampling rates.
EnginePagesCoverage
axe301690%
resources301690%
standards149445%
plain-language148545%
alfa76423%
deprecated-html33310%
sustainability3159%
tech3139%
lighthouse2999%
security2808%

History & Trends → Severity, Lighthouse and other measures across 17 weeks.

Changes since 2026-W31 18 change(s)

axe-core

  • New: document-title appeared this week.
  • New: aria-hidden-focus appeared this week.
  • New: presentation-role-conflict appeared this week.
  • Resolved: landmark-contentinfo-is-top-level no longer fails on any scanned page.
  • Resolved: landmark-no-duplicate-banner no longer fails on any scanned page.
  • Resolved: landmark-no-duplicate-contentinfo no longer fails on any scanned page.
  • Resolved: tabindex no longer fails on any scanned page.
  • Resolved: aria-input-field-name no longer fails on any scanned page.
  • Resolved: aria-allowed-attr no longer fails on any scanned page.
  • Resolved: meta-viewport no longer fails on any scanned page.
  • Resolved: aria-required-parent no longer fails on any scanned page.

Alfa

  • New: sia-r17 appeared this week.
  • New: sia-r45 appeared this week.
  • Resolved: sia-r72 no longer fails on any scanned page.
  • Resolved: sia-r86 no longer fails on any scanned page.
  • sia-r73 shrank: 281 → 240 pages affected (rate: 36% → 31% of pages scanned).
  • sia-r18 spread: 377 → 392 pages affected (rate: 49% → 51% of pages scanned).
  • sia-r61 shrank: 118 → 99 pages affected (rate: 15% → 13% of pages scanned).

Embedded & linked resources

Non-HTML resources this site links to or embeds — PDFs, Office documents, iframes, and media. The site owner is responsible for their accessibility too. Full inventory with first-seen dates: CSV.

New this week (5972)

7551 distinct resources, by type.
TypeCount
PDF documents6000
Images651
Spreadsheets331
Embedded media players180
Video files133
Iframes98
Word/text documents51
Archives (zip, etc.)43
Audio files36
Presentations26
Embeds / objects2