West Nile cases plunge, but 'we're not out of the woods' : 176 incidents of virus were reported in Illinois last year. In 2019, it's down to 3.
The number of human West Nile virus cases in Illinois has fallen dramatically from last year to this year, but public health officials caution that people shouldn't let their guard down yet.
Only three cases of the virus have been reported in patients so far this year, one in Chicago, one in suburban Cook County and one in Kankakee County, with no fatalities, officials said. That compares with 176 cases reported for all of last year, with 17 deaths.
Similarly, only two birds have tes...