Health experts report that Powassan virus, a rare tick-borne illness, is reaching record highs in the United States. The virus is named after the Ontario town where it was first identified. Reporting described the disease as spreading through tick exposure and noted that the pace of illness can be rapid and severe in some patients.
One outlet reports that U.S. cases in 2025 have reached a record level, citing 76 diagnoses. Another source notes that Powassan virus has no available vaccine, and presents the disease as uncommon but potentially serious once transmitted. Both accounts tie the illness to earlier documented cases, including a reference to a 1958 case that helped trace its history and recognition.
Overall, the reporting emphasizes the combination of rarity, increasing reported incidence in 2025, and the lack of a preventive vaccine, alongside expert concern that clinicians and the public may need heightened awareness of tick-borne illness during periods of exposure.
