West Nile virus detected in Nashville mosquitoes for first time in 2026

Key Points:

• Nashville health officials have detected West Nile virus in mosquitoes for the first time in 2026, with a positive sample collected near Cass Street in North Nashville, marking the earliest seasonal detection to date.
• The Metro Public Health Department is responding by increasing mosquito monitoring, distributing educational materials, applying larvicide to standing water, and offering free backyard inspections to reduce mosquito breeding sites.
• West Nile virus is the leading mosquito-borne disease in the U.S.; while most infected individuals show no symptoms, about 20% experience mild illness, and less than 1% develop serious neurological complications, especially older adults and immunocompromised individuals.
• Officials urge residents to protect themselves by eliminating standing water, using EPA-approved insect repellents, wearing protective clothing during peak mosquito activity times, and maintaining window and door screens.
• The detection serves as an early warning that West Nile virus is circulating locally, prompting increased public awareness and preventive measures to reduce the risk of human infection.