SPRINGFIELD – The Illinois Department of Public Health has confirmed the first mosquitoes to test positive for West Nile virus in Illinois for 2021. The first batch to test positive was found in Skokie. No human cases of West Nile virus have been reported so far this year. Monitoring for West Nile virus in Illinois includes laboratory tests for mosquito batches, dead crows, blue jays, robins and other perching birds, as well as testing sick horses and humans with West Nile virus-like symptoms. People who see a sick or dying crow, blue jay, robin or other perching bird should contact their local health department, which will determine if the bird will be picked up for testing.