Health ❯ Public Health ❯ Disease Prevention ❯ Vector-Borne Diseases

West Nile Virus

Chicago Confirms First West Nile–Positive Mosquitoes of 2026

The detection signals elevated seasonal risk, prompting expanded mosquito control operations.

Texas Confirms First Human West Nile Case of 2026

Second West Nile Detection Confirmed in Hays County Mosquito Trap

Early West Nile Virus Surge Drives Third Illinois Human Case, Elevated County Risk

Chicago Mosquitoes Test Positive for West Nile Virus

West Nile Virus Detected in Mosquitoes Across McHenry and DuPage Counties