west nile virus illinois

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West Nile fever, Illinois and DuPage County

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· 1d · on MSN

Third human case of West Nile virus in Illinois reported in DuPage County

The resident was said to be in their 70s and became ill earlier in the month.

· 1d · on MSN

State’s 3rd human West Nile Virus case of 2025 confirmed in DuPage County

· 1mon

Illinois confirms first 2025 human case of West Nile virus

· 8h

Larimer County health officials confirm this year's first West Nile virus case in Fort Collins

After warning residents about a heightened risk of West Nile virus in Larimer County, health officials confirmed this year's first reported case of the virus in the county.

· 6h

West Nile and Jamestown Canyon viruses found in Vermont mosquitos

· 10h

Health officials issue warning after batch of mosquitoes test positive for potentially fatal virus: 'Start taking precautions'

· 6h

South Dakota has reported its first West Nile virus death of 2025: Here's what to know

The health department projects 137 cases of the disease for the state in 2025 – enough to classify as an outbreak.

· 1d

Second Mercer Co. mosquito sample tests positive for West Nile virus

· 1d

Behind the scenes: Mosquito testing in the Valley

6hon MSN

Illinois seeing cases of a pest-borne virus early this year. How to protect yourself

An individual from southern Illinois was hospitalized due to complications from West Nile virus, the Illinois Department of Public Health reported June 24. That case marked the state’s first human case in 2025 and represented the earliest onset of the disease in Illinois since 2016.

4hon MSN

Mosquitoes test positive for the fatal West Nile virus, health officials advise precautions

Health officials are concerned about West Nile virus. Mosquitoes in Joliet and Chicago tested positive. The Illinois Department of Public Health urges precautions. Symptoms include fever and body aches.