This week the Illinois Department of Public Health (IDPH) reported an adolescent female, living in St. Clair County, is the first to contact West Nile virus in Illinois.
Because of recent increased West Nile Virus activity in mosquitoes in southwestern Illinois, health officials recommend that citizens be conscientious in using insect repellent to stave off mosquitoes and wearing protective clothing during dawn and dusk, when the insects are most active.
http://stlouis.cbslocal.com/2015/08/19/first-human-case-of-west-nile-reported-in-st-clair-county/