Six horses based at Laurel Park in suburban Maryland have been shipped to a quarantine site off-track after testing positive for equine herpesvirus, one week after the track had to cancel a live race card due to a positive at the track for the highly contagious disease.
The six positive horses were among 20 that the Maryland Department of Agriculture tested for the virus after a horse tested positive earlier in the week. The horse who initially tested positive “did not respond to treatment” and was euthanized, the agriculture department said.