Key Takeaways

Illinois has confirmed its first Powassan virus case in a resident who became seriously illThe virus, spread by ticks, can cause brain swelling or meningitis in severe casesThere is no specific treatment. Prevention and tick checks remain the best defense, experts say.

WEDNESDAY, Sept. 24, 2025 (HealthDay News) — Illinois health officials are warning residents to be on alert after the state’s first case of Powassan virus was confirmed in a resident who became seriously ill.

The Illinois Department of Public Health (IDPH) hasn’t determined whether the person was infected in Illinois, but officials are now testing ticks statewide for the virus.

“With warm weather still prevalent, tick-borne diseases remain a potential threat here in Illinois,” Dr. Sameer Vohra , IDPH di

See Full Page