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Outbreak Alerts: November 22, 2025 – Equine Herpesvirus- Respiratory – Maricopa County, AZ

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Exposed Horses – Official Quarantine

Number Confirmed: 1; 
Number Exposed: 3; 
Facility Type: Private Facility; 
Comments: Horse is nasal swab PCR positive for EHV-1 D752 but clinically normal, not febrile, no neurologic signs. This case is associated with the EHM outbreak that originated at the Women’s Professional Rodeo Association (WPRA) World Finals and Elite Barrel Race event. For an up-to-date count of EHM cases tied to this outbreak, please visit: HERE

See past published Outbreak Alerts: www.coloradohorsesource.com/category/news/alerts

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