Most Missouri counties aren't testing mosquitoes for West Nile, state officials said, which makes experts worry.

Illinois has confirmed its first human case of West Nile virus this year, health officials say. The person, who lives in ...

The North Shore Mosquito Abatement District said the batch was collected on Monday in a trap and tested positive for the ...

The first human case of West Nile virus in Illinois has been confirmed by the U.S. Centers for Disease Control, according to ...

The city effort includes using catch basins, mosquito light traps and fogging operations to protect residents from mosquitoes ...

West Nile virus has been confirmed in samples from 17 Illinois counties so far this year, according to the IDPH. Find out where.

Southwest suburban Evergreen Park is one of many villages and cities that spray for mosquitoes in the summer. It is one way ...

The Centers for Disease Control and Prevention confirmed Illinois' first human case of the West Nile virus of 2025. Find out more.

No human cases of WNV have been reported in Illinois so far this year, but in 2024, there were 69 confirmed human cases of ...

The case this year is the earliest detection in nearly a decade. The virus carried by mosquitoes poses the greatest risk to people over 65 and the immunocompromised.