First Human WNV Case Reported In St. Clair County

The Illinois Department of Public Health has confirmed the first human West Nile virus case reported in Illinois for 2015. The St. Clair County Health Department reported an adolescent female became ill this month.

The recent hot, dry weather in Illinois has reportedly increased the number of mosquitoes carrying West Nile virus. The IDPH said the first human case is a little later in the year than we typically see in Illinois, but it’s a good reminder of the importance of continuing to take precautions like wearing insect repellent and staying indoors between dusk and dawn.

The first West Nile virus mosquito batch in the state was also in St. Clair County, on May 26. Last year, 50 counties in Illinois reported a West Nile virus positive mosquito batch, bird and/or human case. 44 human cases, including four deaths, were reported in 2014.