A second horse has died in the Canadian outbreak of the neurologic equine herpesvirus-1 (EHV-1), but currently no horses are showing signs of the disease, according to a spokesperson for the affected site.

A 14-year-old Quarter Horse gelding was euthanized after developing severe ataxia (incoordination) one week after the index case, a 12-year-old Canadian Horse mare, was euthanized, said Laurie Michaud, an instructor at that affected facility, Bédard Quarter Horses. Another horse that had been symptomatic has since recovered.

The quarantine at the Chicoutimi, Quebec farm—which is not imposed by the Canadian government—will remain in place at least another 26 days, Michaud said. No horses have had fevers or shown neurologic signs of disease in the past 16 days, and horses continue to be checked twice daily for rectal temperature and signs of ataxia, Michaud said.

None of the horses in the affected stable had competed in Florida, but they had been to national shows with other horses that could have been in international competitions, including Florida, Michaud said. The source of the outbreak has still not been determined