FOX RIVER GROVE – A mosquito batch in Fox River Grove has tested positive for West Nile virus, according to the McHenry County Department of Health.
The positive test comes less than a week after the virus was found in a mosquito batch in Mundelein in Lake County.
It is the first confirmed batch in McHenry County since last year.
The health department had tested the 122 county mosquito batches as of Wednesday, according to a news release. That lumps the county into 19 others reporting 64 positive mosquito batches and 17 positive birds.
There have been no human cases reported this year. Two human cases have been reported in the county the previous two years.
According to the Illinois Department of Public Health, the hot summer has increased mosquito activity and the risk of disease from the virus.
The county health department will continue to collect and test mosquito batches and a limited number of dead birds for testing through mid-October.
Residents should use insect repellent when going outdoors in the evening and wear 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.
Illness from the virus is usually mild and includes fever, headaches and body aches. Serious illnesses such as encephalitis and meningitis are also possible.
Residents 50 and older have the highest risk for severe disease.
For more information, visit www.mcdh.info or call 815-334-4585.