
Multiple US Counties Report Fatal West Nile Virus Cases as 2026 Season Wanes
DuPage County, Illinois, confirmed its first West Nile virus death of 2026, bringing the county’s total cases to six. This follows similar fatal reports in Dallas County, Texas, and Shelby County, Illinois, where health officials warned that cooler weather does not eliminate transmission risks. While most infections are asymptomatic, severe neuroinvasive cases have emerged, including a rare paralysis case in California. Authorities are urging residents to maintain mosquito bite prevention measures, particularly for older adults and immunocompromised individuals, despite the end of peak mosquito season.













