INDIANAPOLIS (WISH) — Indiana has reported its first West Nile virus patient of the 2025 season in a resident of Vanderburgh County, according to a news release issued Tuesday from the Indiana Department of Health.

The Indiana Department of Health reported that 56 mosquito samples have tested positive for West Nile virus across 15 counties. This follows 11 human cases reported in 2024.

The Indiana Department of Health anticipates more cases as the mosquito season continues. To reduce the risk of mosquito-borne diseases, residents are advised to use insect repellents registered with the U.S. Environmental Protection Agency, wear protective clothing, and ensure screens on windows and doors are in good repair.

Residents should also eliminate standing water where mosquitoes can breed, such as in trash, tires and birdbaths, and maintain their properties to prevent mosquito habitats.

Most people infected with West Nile virus experience no symptoms or mild flu-like symptoms, but severe cases can affect the nervous system and be life-threatening, particularly for those older than 60 or with weakened immune systems.

State Health Commissioner Dr. Lindsay Weaver said in a statement in the release, “With large amounts of recent rainfall and projected high temperatures continuing this week, Hoosiers in all parts of the state should take steps to remove breeding sites around their homes.”

Vanderburgh County, the home of Evansville, is in southwest Indiana.

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