Powassan virus disease
📍 United States
All Powassan virus disease outbreaks →Cumulative cases since outbreak start — US CDC bulletin dated 2023-12-31
Official report date — in isolated zones, field onset typically precedes this by days to weeks.
49 confirmed cases in 2023 — highest on record since 2004 (ArboNET). CFR 16% (8 deaths). Neuroinvasive in 96% of cases. Endemic in Northeast and Great Lakes regions, April-December. No treatment or vaccine. Transmitted by deer tick in as little as 15 minutes.
Cite this page (Vancouver)
HealthWatch Global. Powassan virus disease outbreak — United States [Internet]. 2023-12-31 [cited 2026 Aug 15]. Available from: https://healthwatch-global.com/en/outbreak/51068895-f367-406c-8ddc-46ca9b866c2a. Data source: US CDC.
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