Outbreak Alerts: September 18, 2025 West Nile Virus in Stanislaus County, CA

Confirmed Case(s) – No Quarantine Source: California Department of Food and Agriculture Number Confirmed: 1 Horse 1: Age: 2; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 9/14/2025; Clinical Signs: ataxia (worse in front end), collapsing, leaning on wall, drooping ear; Confirmation Date: 9/18/2025; Horse Status: Affected And Alive; Vaccination Status: Vaccinated; Comments: The third (3rd) case of West Nile Virus in California in 2025 was ... Read More

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