A number of racetracks have placed bans on shippers from Churchill Downs in Louisville, Ky., after a sick horse who was removed from the grounds on Tuesday tested positive for equine herpesvirus.
The bans were put in place by the tracks owned by 1/ST Racing, which include Gulfstream Park in Florida and Santa Anita Park in Southern California, as well as by Oaklawn Park in Arkansas and the New York Racing Association, which is racing at Aqueduct.