The Centers for Disease Control and Prevention confirmed that a person downstate, specifically in Southern Illinois, was hospitalized due to complications from West Nile.

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 southern Illinois, was hospitalized with complications from the mosquito-borne virus.