La Crosse Virus Case Reported in Claiborne County, 2026
In 2026, the CDC reports four human La Crosse virus cases nationwide, including one in Claiborne County, Tennessee. All four cases were neuroinvasive. La Crosse is mosquito-borne; most infections are asymptomatic, but some cause fever, headache, nausea and fatigue, and severe brain inflammation can occur, particularly in children under 16. There are no vaccines or targeted treatments; prevention centers on avoiding mosquito bites, with cases typically arising from late spring to early fall. The article also notes two Knox County children hospitalized for the disease in 2025.
