Laurel Park in Maryland on Tuesday began allowing horses to ship into the track, but no horses, including the ship-ins, will be allowed to leave the grounds until Maryland agriculture officials lift a hold order on a barn where a filly tested positive for equine herpesvirus, according to track and agriculture officials.
The hold order will likely be in place until Dec. 6, 21 days after the filly first began exhibiting signs of the highly contagious disease. The filly, a 2-year-old named Nin trained by King Leatherbury, was euthanized on Saturday.