An attending veterinarian has confirmed that a 9-year-old Thoroughbred gelding was confirmed with equine influenza in Multnomah County, Oregon, on February 21. The gelding, which was reported as undervaccinated, had onset of clinical signs on that date that included fever, coughing and nasal discharge. The horse is alive.
Nine other horse on the premises are suspected of having equine influenza.
The veterinarian noted that this horse also tested positive for the respiratory form of equine herpesvirus.
The premises has been placed under a voluntary quarantine.
Information for this report was provided by the Equine Disease Communication Center.