A Pennsylvania racecourse has imposed quarantine measures after a horse was confirmed with the neurological form of equine herpes.
New Parx said three barns were currently under quarantine.
No horses from those barns are permitted to train. Track officials say that no horses are permitted to leave the backstretch until further notice.
It is the second time in four months that New Parx has had to institute quarantine measures because of equine herpes virus.
The quarantine measures are expected to remain in place for 21 days, unless further cases emerge.
The New York Racing Association said on Saturday that it would not permit horses to move to or from New Parx until the quarantine was lifted.
Recent weather has also disrupted the track’s racing card.