Multiple US States Confirm First West Nile Virus Cases, Mississippi Reports First Death

In 2025, the Michigan Department of Health and Human Services confirmed the state's first human case of West Nile virus in Livingston County, with mosquitoes carrying the virus found in multiple counties. The Mississippi State Department of Health reported the state's first West Nile virus death in Washington County, marking the first fatality from the virus in Mississippi this year amid 10 confirmed human cases. Both states' health departments emphasize personal protection measures such as using EPA-registered insect repellents containing DEET, wearing long-sleeved clothing, avoiding outdoor activities during peak mosquito hours from dusk to dawn, and eliminating mosquito breeding sites by removing standing water. Health officials warn that while many infected individuals experience mild or no symptoms, the virus can cause severe illness, particularly in people over 50. Residents in affected areas are urged to take precautions seriously to prevent mosquito bites and reduce the risk of West Nile virus infection. Additional resources and information are available on the respective health department websites.