IDPH Warns of Mosquito, Tick, and Bat Health Risks as Summer Arrives
IDPH warns warmer weather increases risks from mosquitoes, ticks, and bats. First West Nile virus–positive mosquito batches have appeared in Cook County; 2025 saw 150 human West Nile cases statewide. Tickborne diseases (including Powassan) are possible, and two bats tested positive for rabies in 2026. Prevent bites by reducing standing water, using EPA-registered repellents, wearing protective clothing, performing full-body tick checks, and vaccinating pets; contact health authorities if exposed to a bat or bitten by an animal.












