News reportRussia
Irkutsk pneumonia investigation: plague remains unconfirmed
AP reports an investigation in Siberia; the cause has not been confirmed.
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Follow what’s known about plague around the world.
08Published briefs
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Coverage of this tracker, not global case totals. Source dates and statistical periods are shown separately.
THE GLOBAL PICTURE
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Reported cases2025 · Suspected, probable & confirmed cases
Case statistics describe published reporting periods. They do not estimate current infection risk. Understand the data
FOLLOW THE EVIDENCE
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Official updateUnited States
CDC publishes investigation of Arizona’s July 2025 plague death
A new MMWR report examines an older fatal case and the response to possible exposures.
Official updateGlobal
WHO publishes human plague surveillance for 2019–2025
New historical tables distinguish reported cases, confirmation status and missing surveillance data.
Official updateUnited States
New Mexico reports fatal human plague case in Santa Fe County
The June 11 notice describes the state’s first reported human case of 2026.
Official updateUnited States
Bernalillo County human plague case reported in September 2025
New Mexico’s notice said the patient had left hospital following treatment.
News reportUnited States
AP reports fatal pneumonic plague case in northern Arizona
Coverage of the July 2025 Coconino County announcement.
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Confirmed, suspected, and unconfirmed reports stay distinct. Unknown numbers stay unknown.