Powassan Virus Can Cause Permanent Brain Damage After Just 15 Minutes of Tick Attachment as 2026’s Record Tick Season Raises Risk Across the U.S.

Powassan virus is North America’s most lethal tick-borne pathogen — killing 10% of neurological cases and leaving 50% of survivors with permanent deficits. It can transmit in as little as 15 minutes. With 2026 shaping up as one of the worst tick seasons ever, here is the complete warning for summer outdoor families.