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Louisville Confirms First West Nile Virus Case
21 Jul
Summary
- Louisville officials confirmed the city's first human West Nile virus case.
- Mosquitoes near Churchill Downs previously tested positive for the virus.
- Mosquito fogging is scheduled to help curb the spread.
Louisville Metro Department for Health and Wellness officials confirmed the city's first positive human case of West Nile virus on July 20, 2026. Due to privacy reasons, no further information about the individual will be released.
The West Nile virus is transmitted through the bite of infected mosquitoes. Earlier in July, specifically on July 14, Louisville's public health agency announced safety measures after mosquitoes sampled near Churchill Downs tested positive for the virus.
Health officials emphasized that West Nile virus has been detected in local mosquitoes for several years. The city's mosquito control team actively works year-round to manage mosquito populations. Residents are strongly advised to take personal protective measures against mosquito bites.
To further protect the community and reduce mosquito presence, mosquito fogging operations were scheduled for July 20, 2026. The situation is ongoing, and the city will provide updates.
