Chicago, IL – The Illinois Department of Public Health (IDPH) announced the first mosquito batches testing positive for West Nile virus in 2024. The positive specimens were collected in Hoffman Estates, Cook County, on May 14, and in Jacksonville, Morgan County, on May 16.
According to the IDPH, the positive tests follow a mild winter and spring and were confirmed two weeks earlier than in 2023. The first bird to test positive this year was reported on April 2 in Douglas County.
IDPH Director Dr. Sameer Vohra emphasized the importance of protecting against mosquito bites, especially for older adults and those with weakened immune systems. Preventative measures include using insect repellent and eliminating standing water around homes.
