The Will County Health Department reported a fourth mosquito sample tested positive for West Nile Virus.
The sample was from a trap located in Lockport, according to a news release.
The other positive West Nile Virus samples were taken from traps located in Manhattan, Plainfield and Joliet near Sunny Hill Nursing Home.
The Will County Health Department wants residents to know that West Nile Virus is passed from infected birds to humans through the bite of a Culex mosquito. During the peak mosquito hours of dusk to dawn, it is recommended that residents wear long sleeves, long pants, shoes and socks while outside.
Insect repellent containing DEET is recommended as well. Light colors are best, as mosquitoes are attracted to dark habitats. Residents should also remove standing water from their property, such as in gutters, birdbaths, kiddie pools and other areas where mosquitoes can lay eggs.
West Nile Virus symptoms similar are to flu: fever, headache, body aches and swollen lymph nodes. Anyone can catch it, but seniors, young children and those with weakened immune systems are most at risk.