A small outbreak of equine herpes at Penn National Racecourse has prompted management of Philadelphia Park to bar horses shipping in to race as well as horses shipping out to “race and return” from the Grantville, Pa. oval.

Richard Schnaars, general manager of Penn National, stressed that the situation is “very localized,” with only two horses from the stable of trainer Bob Wolfe testing positive for the virus. It is transferred from horse to horse by contact, usually through the nostrils. A 10-14 day quarantine is typical, said Schnaars