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Disease Alerts

Updates on current disease outbreaks are listed here as they occur and will include the date listed, disease name, location and current status. Specific premises will not be named but the general location by town, county and state will be listed. When locations, events or horses are at risk they will be listed. Updates will be posted as they are received.



Columbia County, WI
Outbreak Identifier: 7279
Alert ID: 4818
January 05, 2026
Confirmed Case(s) - Voluntary Quarantine

Attending Veterinarian

Number Confirmed: 1; 
Facility Type: Farm;

Horse1: 

Age: 18; Gender: Gelding; Breed: Quarter Horse/Paint; Confirmation: 1/2/2026; Horse Status: Alive and Recovering 

Comments: The horse came from a rescue; no known vaccinations. The horse has been isolated from other horses on new premises; no exposure to others; was sampled 12/23/2025; Results 1/2/2026 (PCR at US Davis-holiday delays).