The North Shore Mosquito Abatement District has found the first West Nile virus (WNv) positive mosquitoes to occur in our traps in Lincolnwood, Morton Grove, and Northbrook this year.
Batches of mosquitoes, collected between June 25 - 27, 2025, from NSMAD traps in Lincolnwood, Morton Grove, and Northbrook tested positive for West Nile virus in our lab on July 1.
This year, WNv positive mosquitoes have also been found in NSMAD traps in Evanston, Glenview, Niles, Skokie, and Wilmette. Please visit our Mosquito Surveillance Dashboard to see the most current test results.
While the risk of being infected with West Nile virus is low at this time, the NSMAD recommends that residents take personal protection measures to minimize mosquito bites including: using an EPA registered insect repellent, wearing loose fitting clothing and avoiding peak mosquito feeding times during the hours around dawn and dusk. People are urged to examine their property and eliminate any items that can hold water, particularly smaller items that may be easily overlooked. Residents should contact the NSMAD for assistance with any mosquito related issues they may be experiencing.
If it can hold water, it can breed mosquitoes!