A batch of mosquitoes caught in DeKalb and Sycamore have tested positive for West Nile virus, according to a DeKalb County Health Department news release.

No human cases of West Nile virus have been reported in DeKalb County this year, although the virus can be transmitted from mosquitoes to humans, according to the Health Department.

“The most effective way to prevent you or your family from being infected is to reduce the chances of being bitten by mosquitoes,” Health Protection Director Greg Maurice said, according to the Health Department. “This includes eliminating standing water from around your house and property where mosquitoes breed and hatch and using mosquito repellent when outside.”

Only one in five people infected with the virus will develop a fever and less than 1 percent will develop serious neurological illness, according to the Centers for Disease Control and Prevention website.