Michigan Department of Agriculture Director Dan Wyant announced the confirmation of a third case of equine herpes virus type-1 (EHV-1) at Northville Downs in Northville, Mich., on Jan. 20. One barn at Northville Downs has been placed under quarantine while the source of infection and extent of spread is investigated by regulators.

On Jan. 14, 2005, animal health surveillance detected a horse, Pam’s Cadet, exhibiting symptoms of illness at the Northville Downs. Further testing at the state’s Diagnostic Center for Population and Animal Health at Michigan State University confirmed Pam’s Cadet as being the third case of EHV-1 to be found at the track in the past two months. Two previous cases, which occurred in mid-December, resulted in a three-week quarantine of a separate, non-adjacent barn at the racetrack. All three horses have been euthanized