WILMETTE, IL – The first mosquitoes found in Wilmette that tested positive for West Nile virus were found on July 16 and tested positive two days later, according to the North Shore Mosquito Abatement District. With three positive samples and two in Kenilworth, each municipality in the northern district of Cook County reported mosquitoes carrying the West Nile virus test on Friday, July 20th.
The district reported 1o4 of the 933 lots of mosquitoes recovered from the traps. in 2018 had tested positive. The level of West Nile virus on the North Shore is moderate but continues to increase, according to the district.
According to the July 25 district weekly report, the number of harmful mosquitoes – without West Nile virus – decreased between July 14 and 20.