Confirmed Case(s) – No Quarantine Source: State Veterinarian Number Confirmed: 1Number Suspected: UnknownFacility Type: Equine Clinic Horse 1: Age: 12; Gender: Mare; Breed: Quarter Horse (QH); Usage: Pleasure Riding; Onset of Clinical Signs: 8/20/2025; Clinical Signs: neurologic; Horse Status: Affected And Alive; Vaccination Status: Unvaccinated See past published Outbreak Alerts: https://nwhorsesource.com/category/news/alerts

Confirmed Case(s) – No Quarantine Source: Assistant State Veterinarian Number Confirmed: 1Number Suspected: UnknownNumber Exposed: 40Facility Type: Training Facility Horse 1: Age: 7; Gender: Gelding; Breed: Draft; Usage: Pulling; Onset of Clinical Signs: 8/13/2025; Clinical Signs: Ataxic and weak in the hind end. Down twice and lifted.; Horse Status: Recovering; Vaccination Status: Unvaccinated See past published Outbreak Alerts: https://nwhorsesource.com/category/news/alerts

Confirmed Case(s) – No Quarantine Source: Assistant State Veterinarian Number Confirmed: 1Number Suspected: 40Number Exposed: UnknownFacility Type: Private Facility Horse 1: Age: 15; Gender: Gelding; Breed: Quarter Horse (QH); Usage: Ranch Horse; Onset of Clinical Signs: 8/10/2025; Clinical Signs: Initial ataxia and weakness in the hind end, down the next day and death on day 3.; Horse Status: Deceased; Vaccination Status: Unvaccinated; Comments: Rodeo horses on premise vaccinated, but not ranch horses … Read More

Confirmed Case(s) – No Quarantine Source: State Veterinarian Number Confirmed: 1Number Exposed: 5Number Euthanized: 1Facility Type: Private Facility Horse 1: Age: 13; Gender: Mare; Breed: Quarter Horse (QH); Usage: Pleasure Riding; Onset of Clinical Signs: 8/12/2025; Clinical Signs: acute onset ataxia; unable to rise after 24 hours; Horse Status: Euthanized; Vaccination Status: Unvaccinated; See past published Outbreak Alerts: https://nwhorsesource.com/category/news/alerts