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Home » Press Releases » Dept. of Agriculture, Trade and Consumer Protection: Brown County horse confirmed with West Nile Virus
MADISON — The Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP) confirms that an unvaccinated six-year-old Quarter Horse mare in Brown County has tested positive for West Nile Virus (WNV). It is the state’s first confirmed case of WNV in a horse this year. In 2025, DATCP documented five cases of WNV in horses; access an online map of the 2025 cases. Wes...