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4 human cases of West Nile virus confirmed in Cook County

Aug 31

Wet summer fuels mosquito populations across Chicago area

Aug 21

Person dies from West Nile virus in Chicago, health officials say

A person has died in Chicago of West Nile virus, according to health officials.

Sep 1

Google wants to release 32M good mosquitoes | Here's why

Jun 2

James Gathany/CDC via AP, File

Mosquitoes found in Iceland for 1st time as temperatures rise

Oct 22, 2025

NY confirms 1st locally acquired chikungunya case

Oct 15, 2025

Spider or mosquito bite? Here's how to tell

Sep 9, 2025

Mosquitoes test positive for West Nile Virus in Naperville: Officials

Aug 22, 2025

CDC issues travel health notice for chikungunya virus in China

Aug 6, 2025

Latest Videos

1:45

Wet summer fuels mosquito populations across Chicago area

Aug 21

0:20

Cook County resident is 1st Illinois death from WNV in 2023: IDPH

Aug 24, 2023

0:15

West Nile virus found in Chicago-area mosquitoes

Jun 14, 2023

0:23

Northern Indiana residents warned about mosquito-borne virus

Oct 8, 2022

0:18

Chicago reports 1st case of West Nile virus in 2022

Sep 2, 2022

0:13

Cook County resident dies of West Nile virus: state officials

Aug 31, 2022

0:28

Mosquitoes carrying West Nile virus found in Niles

Aug 5, 2022

0:22

Mosquito carrying West Nile virus found in North Shore

Jul 14, 2022

Latest Stories

First human case of West Nile Virus reported in DuPage County, officials say

DuPage County has reported its first human case of West Nile Virus this season, health officials said.

Jul 24, 2025

Mosquitoes test positive for West Nile Virus in LaSalle County, officials say

Mosquitoes with West Nile Virus have been found in LaSalle County for the first time this year, health officials said.

Jul 24, 2025

Mosquitoes test positive for West Nile Virus in Evanston, officials say

Mosquitoes with West Nile Virus have been found in Evanston, officials said.

Jun 27, 2025

Mosquitoes test positive for West Nile Virus in Niles, officials say

Mosquitoes with West Nile Virus have been found in Niles. It's the first time for that suburb this year, officials said.

Jun 11, 2025

Mosquitoes test positive for West Nile Virus in DuPage County, officials say

For the first time this season, mosquitoes in a west suburban county have tested positive for the West Nile Virus, health officials said.

Jun 6, 2025