On Jan. 21, Oklahoma Department of Agriculture, Food, and Forestry (ODAFF) released an update on the recent Remington Park quarantine for equine herpesvirus-1 (EHV-1). Four additional horses were released from quarantine, having completed 14 days with no fevers, no symptoms compatible with EHV-1, and no exposure to EHV-1-positive horses.

Of the approximately 120 exposed horses, three remain under quarantine at Remington Park and two remain quarantined at their owner’s premises. All five quarantined horses will remain under enhanced biosecurity protocols and receive twice-daily temperature monitoring. ODAFF staff continues to monitor the situation on-site.

Outbreak Recap

The first horse that tested positive, a 3-year-old Thoroughbred mare, was euthanized Nov. 12 due to the severity of her clinical signs of the neurologic form of EHV-1. At that time, 66 horses in her barn were placed under quarantine.

On Nov. 21, ODAFF confirmed two additional horses with positive EHV-1 tests: one in the index case’s barn and one in a second barn, where 100 horses were exposed and placed under quarantine