The McHenry County Department of Health announced Friday morning in a news release that mosquitoes collected on Aug. 6 from a mosquito trap in McHenry have tested positive for West Nile virus.
This is the first positive West Nile test in McHenry County in 2014. The department of health said it has tested 147 mosquito batches as of Aug. 14, and all other batches had tested negative for West Nile.
Illness from West Nile virus is usually mild and includes fever, headache and body aches but serious illnesses, such as encephalitis and meningitis and death, are possible. The Illinois Department of Public Health indicates that as of Aug. 14, 31 other counties have reported 154 positive mosquito batches, including 13 birds, but no human cases of West Nile so far. There were 117 human cases in 2013, including 11 fatal.
The department of health said it will continue to collect and test mosquito batches through mid-October. It advises that residents continue to use insect repellent when going outdoors in the evening, and wearing long-sleeved shirts and long pants for extra protection.
Other tips include emptying standing water from containers around the house and making sure doors and windows have tight-fitting screens.
For more information on WNV, visit www.mcdh.info (Environmental Health) or call 815-334-4585.