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Kentucky Health Department Issues Alert as West Nile Virus Cases Surge

A close-up of a mosquito on a leaf in Kentucky

Kentucky, October 6, 2025

News Summary

The Kentucky Department for Public Health has announced a statewide health alert following a spike in West Nile Virus cases, confirming 19 cases this season, including one fatality. Health officials are urging residents to take precautions against mosquito bites as the number of confirmed cases of La Crosse virus also rises. Significant health responses, including mosquito spraying in affected areas, have been initiated to combat the growing threat from these mosquito-borne illnesses.

Kentucky Health Department Issues Statewide Alert as West Nile Virus Cases Surge to 19, Including One Fatality

The Kentucky Department for Public Health has issued a statewide health alert due to a significant rise in mosquito-borne illnesses, particularly West Nile Virus (WNV) and La Crosse encephalitis virus. This year, health officials confirmed 19 cases of West Nile Virus across the state, including one reported death.

Historically, Kentucky reported an average of only 7 cases of West Nile Virus annually. The deceased individual resided in Daviess County, marking a notable increase in the virus’s impact this season. Additionally, the state has recorded two confirmed cases of La Crosse virus, with two more suspected cases currently under investigation.

Local Impact and Health Responses

The Lexington-Fayette County Health Department has identified four human cases of West Nile Virus, all of which required hospitalization. The affected individuals range in age from 30 to 77 years. Reports indicate that these cases occurred between late August and late September, particularly among residents who spent considerable time outdoors and had been bitten by mosquitoes in ZIP codes 40502, 40505, and 40509.

In response to the increasing cases, the Lexington-Fayette County Health Department has initiated mosquito spraying in impacted areas. This spraying focuses on early morning and late evening hours when mosquito activity is at its peak and utilizes a Duet spray at a rate of 0.6 ounces per acre. Weekly mosquito trapping is also performed to monitor the local mosquito population, with high numbers prompting additional spray activities.

Health Advisory and Precautions

West Nile Virus is primarily transmitted through bites from infected mosquitoes. Symptoms of the virus can begin to manifest three to 14 days after being bitten and may include fever, headache, body aches, nausea, vomiting, and swollen lymph glands. In severe cases, individuals may experience significant neurological symptoms such as severe headaches or confusion, at which point immediate medical attention is necessary.

Health officials are urging residents to take protective measures against mosquito bites. Recommendations include using insect repellent, wearing long sleeves and pants when outdoors, and removing any standing water where mosquitoes are likely to breed. This year’s weather patterns have created conducive conditions for mosquito breeding, contributing to a rise in virus cases across the region.

Residents are encouraged to report any standing water or mosquito concerns by contacting Environmental Health and Protection at (859) 231-9791, contributing to the collective effort to mitigate the spread of these diseases.

Conclusion

The Kentucky Department for Public Health continues to monitor the situation closely and advises the community to remain vigilant regarding mosquito protection as the summer progresses.

FAQ

What is West Nile Virus?

West Nile Virus is an illness spread by infected mosquitoes, often resulting in mild symptoms but can lead to severe neurological issues in some cases.

How can I protect myself from mosquito bites?

To protect against mosquito bites, use insect repellent, wear long sleeves and pants when outdoors, and eliminate standing water around your home.

What should I do if I experience severe symptoms?

If you experience severe headaches or confusion, seek immediate medical attention, as these may be signs of a more severe case of West Nile Virus.

What preventative measures are being taken by health departments?

Health departments are conducting mosquito spraying in affected areas, monitoring mosquito populations, and advising residents on prevention strategies.

How many cases of La Crosse virus have been reported in Kentucky?

This year, there have been two confirmed cases of La Crosse virus in Kentucky, with two additional suspected cases under investigation.


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Additional Resources

Kentucky Health Department Issues Alert as West Nile Virus Cases Surge

STAFF HERE LEXINGTON KY STAFF
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.

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