Samples collected from a Health Department mosquito monitoring site in Joliet represent Will County Health Department’s first confirmed West Nile Virus activity for 2014.
The samples were collected July 1, and tested positive for WNV July 2 and 3. Will is one of at least nine Illinois counties to report WNV activity so far this year. A positive mosquito batch collected in Will County on June 17 was reported by Naperville.
The county’s first WNV confirmation of 2013 was a mosquito sample from Bolingbrook tested July 8.
No human WNV cases have been reported in Illinois to date, but activity in bird and mosquito populations typically foreshadow human activity. Illinois reported 117 human cases and 11 fatalities a year ago. There were no cases of human infection from Will County in 2013.
West Nile Virus is a potentially serious human infection transmitted through the bite of an infected mosquito. Common WNV symptoms include: fever, nausea, headache, and muscle aches. Symptoms may last from a few days to several weeks. Potential complications include meningitis or encephalitis.