Tracker documentation

Tracker Changelog

A source-linked changelog of outbreak count updates, status reclassifications, methodology changes, and corrections.

Last reviewed: May 15, 2026Data last checked: May 15, 2026, 17:20 UTCReport a correction

Real changelog

The changelog is seeded from current official source updates and repository data. Entries are source-linked and include prior/new values when a value changed.

Date/timeChange typeSourceWhat changedPrior valueNew valueWhy it changedLink
2026-05-15T14:00:00ZSource UpdateECDCNo new cases or deaths since the previous update; current ECDC status remains 11 total, 8 confirmed, 2 probable, 1 inconclusive, 0 suspected, 3 deaths.11 total / 8 confirmed / 2 probable / 1 inconclusive / 3 deathsNo count change from previous updateECDC daily outbreak page states no new cases or deaths since the previous update.Source
2026-05-13T12:00:00ZCase Count ChangeWHOWHO DON601 added two confirmed cases and one inconclusive result compared with the May 8 DON.8 total / 6 confirmed / 2 suspected / 3 deaths11 total / 8 confirmed / 2 probable / 1 inconclusive / 3 deathsWHO published DON601 with updated classifications.Source
2026-05-12T12:00:00ZContent UpdateCDCCDC current situation page emphasized no confirmed U.S. cases from this outbreak and extremely low broad U.S./traveler risk.Earlier CDC HAN outbreak noticeCurrent situation page reviewedCDC published/updated a current situation page.Source
2026-05-08T12:00:00ZMethodology UpdateCDC/WHOTracker retained prior WHO and CDC HAN notices for chronology while treating later ECDC/WHO updates as current for counts.Not applicableHistorical source reconciliation addedLater official source dates supersede earlier counts for current status.Source

Primary sources reviewed

CDC, WHO, and ECDC official public-health pages were reviewed for this build. Current outbreak counts use official outbreak updates; evergreen pages use official background and guidance pages.