The Kansas Department of Agriculture Division of Animal Health has received notification of one confirmed cases of West Nile virus (WNV) in a horse in Harper County, Kansas, in 2025.

WNV is a preventable disease, with annual vaccinations that have proven highly effective. We encourage all horse owners to consult with their local veterinarians and make a vaccination plan for their horses.

• News Release 7-23-2025

Previous reports of the most recent cases of West Nile virus in 2020 and 2023.

• News Release 8-25-2023

• News Release 10-1-2020

Additional Resources

• West Nile virus vaccine info from American Association of Equine Practitioners
• 10 Tips for Reducing Your Horse's West Nile Risk

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