Kentucky, October 5, 2025
News Summary
Kentucky health officials have reported a sharp increase in West Nile virus cases, with 19 confirmed cases and one related death. This year’s figures exceed the average of seven cases in previous years, raising concerns about mosquito-borne illnesses. The deceased was a resident of Daviess County, while confirmed cases in Lexington have involved adults aged 30 to 77. In response, mosquito spraying operations have been initiated in affected neighborhoods. Additional cases of La Crosse virus are also under investigation, further emphasizing the urgent need for preventive measures.
Lexington, Kentucky – Kentucky health officials have issued a statewide health alert as the number of reported cases of West Nile virus has surged to 19, including one associated death. This year’s cases significantly exceed the average of seven cases seen in previous years, marking an alarming uptick in mosquito-borne illnesses in the state.
The individual who died from the West Nile virus was a resident of Daviess County. In Lexington, the health department has confirmed four cases, all of which have required hospitalization. Among those affected are adults aged between 30 and 77, all of whom reported spending extended periods outdoors in the 40502, 40505, and 40509 zip codes, leading to mosquito bites.
The confirmed cases emerged between late August and late September 2025. In response to this concerning trend, the Lexington-Fayette County Health Department has undertaken multiple rounds of mosquito spraying in impacted neighborhoods to control the population of these insects.
Alongside the West Nile virus, there have been two confirmed cases of La Crosse virus and two suspected cases which are under investigation in Eastern and Central Kentucky. Historically, Kentucky recorded a total of only 11 La Crosse virus cases from 2003 to 2024, making the emergence of additional cases particularly distressing this year.
Contributing to this situation are favorable weather conditions that have created ideal breeding environments for mosquitoes. The symptoms of West Nile virus may include fever, headache, body aches, nausea, vomiting, swollen lymph glands, neck stiffness, tremors, vision loss, muscle weakness, or skin rash. Typically, these symptoms can manifest 3 to 14 days after being bitten by an infected mosquito.
Although mild cases of West Nile virus usually improve without treatment, severe cases can lead to serious health complications and require immediate medical attention. Health authorities emphasize the importance of prevention, recommending residents to use insect repellent, wear protective clothing, and eliminate standing water where mosquitoes can breed.
The Lexington-Fayette County Health Department is actively monitoring mosquito populations through weekly trapping at six locations. Spraying operations are conducted during early morning and evening hours, utilizing Duet spray but only under specific weather conditions to ensure effectiveness. Residents can report excessive mosquito issues or areas of standing water by contacting Environmental Health and Protection at (859) 231-9791.
Key Facts Summary
- Total West Nile virus cases in Kentucky in 2025: 19 (including 1 death)
- Average annual West Nile virus cases: 7
- Location of confirmed death: Daviess County
- Affected age group in Lexington: 30-77 years old
- Timeframe of confirmed cases: Late August to late September 2025
- Additional mosquito-borne illnesses: 2 cases of La Crosse virus
Prevention Measures
- Use insect repellent
- Wear protective clothing
- Eliminate standing water
FAQ Section
What is West Nile virus?
West Nile virus is a mosquito-borne illness that can cause symptoms ranging from mild flu-like signs to severe neurological complications.
What are the symptoms of West Nile virus?
Symptoms may include fever, headache, body aches, nausea, vomiting, swollen lymph glands, neck stiffness, tremors, vision loss, muscle weakness, or skin rash. Symptoms usually appear 3 to 14 days after being bitten.
How can I prevent West Nile virus?
To prevent West Nile virus, use insect repellent, wear protective clothing, and eliminate any standing water near your home.
What to do if I suspect I have been infected?
If you experience symptoms of West Nile virus, seek medical attention promptly, especially if symptoms become severe.
Chart: Key Features of West Nile Virus
| Feature | Description |
|---|---|
| Transmission | Mosquito bites from infected mosquitoes |
| Symptoms | Mild: flu-like symptoms; Severe: neurological symptoms |
| Prevention | Insect repellent, protective clothing, eliminate standing water |
| Monitoring | Weekly mosquito trapping and spraying |
| Hospitalization Rate | All confirmed Lexington cases required hospitalization |
Deeper Dive: News & Info About This Topic
HERE Resources
Kentucky Reports Significant Rise in West Nile Virus Cases
Lexington, Kentucky Faces Rising Threat of West Nile Virus
Lexington, KY Forecasts Toasty Temperatures and Mainly Dry Conditions
Warm and Dry Autumn Forecast for Central and Eastern Kentucky
Warm Weather Forecast for Lexington, KY This Week
Lexington Health Department Initiates Mosquito Spraying Due to West Nile Virus Cases
Lexington Reports First Case of West Nile Virus
Additional Resources
- WKYT: Kentucky Issues Health Alert Amid Rise West Nile Virus Cases
- Lex18: State Issues Health Alert as Lexington Reports Fourth West Nile Case
- 14 News: West Nile Death Confirmed in Daviess Co
- Wikipedia: West Nile Virus
- Kentucky Today: State Health Department Warns of Increase in West Nile Virus, La Crosse Virus
- Google Search: West Nile Virus Kentucky
Author: STAFF HERE LEXINGTON KY STAFF
The LEXINGTON STAFF WRITER represents the experienced team at HERELexingtonKY.com, your go-to source for actionable local news and information in Lexington, Fayette County, and beyond. Specializing in "news you can use," we cover essential topics like product reviews for personal and business needs, local business directories, politics, real estate trends, neighborhood insights, and state news affecting the area—with deep expertise drawn from years of dedicated reporting and strong community input, including local press releases and business updates. We deliver top reporting on high-value events such as Woodland Art Fair, Crave Food and Music Festival, and Railbird Festival. Our coverage extends to key organizations like Commerce Lexington and Blue Grass Community Foundation, plus leading businesses in education, manufacturing, and technology that power the local economy such as University of Kentucky, Toyota Motor Manufacturing, and Lexmark. As part of the broader HERE network, including HEREBowlingGreen.com and HERELouisville.com, we provide comprehensive, credible insights into Kentucky's dynamic landscape.
