Rare but dangerous tick-borne virus on the rise in the U.S.
A rare but dangerous tick-borne virus is increasing in the United States, with health officials reporting a growing number of cases. The virus can cause severe illness and, in some cases, be fatal, raising concerns among public health experts about its spread.
Background
- The article covers Powassan virus, a rare tick-borne disease that is gaining attention as case numbers slowly rise in the U.S. Unlike Lyme disease (the far more common tick illness), Powassan can be transmitted much faster — in as little as 15 minutes of tick attachment, compared to the 24–48 hours typically needed for Lyme transmission.
- Powassan virus is not new (first identified in the 1950s), but cases have been increasing, likely due to tick range expansion driven by climate change and shifting wildlife patterns. It is spread by the same black-legged (deer) tick that carries Lyme, as well as by the groundhog tick.
- The disease can cause severe neurological symptoms (encephalitis, meningitis) and about 10-15% of cases are fatal; among survivors, roughly half suffer long-term neurological damage. There is no specific treatment or vaccine for humans. Prevention relies on tick avoidance, repellents, and prompt tick removal.
- The article is likely appearing now because public health agencies (e.g., CDC) have issued recent reports tracking Powassan activity, and warmer seasons increase human-tick exposure.