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West Nile Positive-Mosquitos Confirmed in Chicago
- Health officials reported that mosquito samples from both Chicago and Tazewell County were found to carry West Nile virus in early June 2025.
- These positive tests occurred as mosquito activity increases in warmer weather and follow routine surveillance in multiple counties to monitor virus spread.
- Chicago’s Department of Public Health regularly tests mosquitoes each week and applies larvicide treatments to tens of thousands of catch basins throughout the city to reduce mosquito numbers and limit the spread of viruses.
- Approximately 20% of infected people develop flu-like symptoms, while severe illness affects about 1 in 150, mostly adults over 55 or those with weakened immune systems.
- Officials urge residents to use EPA-registered repellents, wear protective clothing from dusk to dawn, and reduce standing water to prevent mosquito breeding and virus spread.
11 Articles
11 Articles
Chicago Sun Times
Usa newsMosquitoes in Chicago test positive for West Nile Virus, following McHenry and DuPage counties
The year’s first mosquitoes with West Nile Virus have been identified, Chicago Department of Public Health announced Friday morning.At least 16 counties across the state have had cases of West Nile Virus in birds, mosquitoes and horses, though no human cases have been reported yet this year. Cook and McHenry Counties have seen the bulk of the infected mosquito batches, with 15 and 11 each respectively.A batch of mosquitoes in Lake in the Hills t…
West Nile positive-mosquitos confirmed in Chicago
CHICAGO — West Nile positive-mosquitos have been confirmed in the City of Chicago by the health department. However, there are currently zero human cases in the city and the rest of the state. Other local areas where West Nile mosquitos are positive are McHenry and DuPage counties. They have also been confirmed in Glenview. Chicago Department of Public Health shared the following tips to stay safe. Making sure that window and door screens do no…
Daily Bulletin
Colton mosquitos test positive for West Nile virus
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Mosquito-borne West Nile virus found in Tazewell County
MORTON, Ill. (WMBD) -- Officials have confirmed a mosquito pool collected in Tazewell County has tested positive for West Nile virus. The pool was reportedly collected on Tuesday, June 10 in Morton before being tested on Wednesday at the Tazewell County Health Department. According to the Tazewell County Health Department, West Nile virus is spread through the bite of an infected Culex mosquito. Most people who are infected do not experience sym…
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