Two additional positive tests for equine herpesvirus type 1 (EHV-1) virus Feb. 26 were reported at Penn National Race Course. That prompted Philadelphia Park Racetrack to extend its ban on shipping into and out of the Grantville, Penn., track to March 19. Racetracks in neighboring West Virginia have also decided to implement the shipping restriction as a precaution.

The total number of horses that have tested positive for EHV-1 at Penn National now stands at five. Two weeks ago, three horses trained by Bob Wolfe and stabled in Barn U tested positive; two of those horses died. The third spiked a fever but is doing well and showing no neurological symptoms, said Richard Schnaars, general manager at Penn National.
     
Ten nasal swab samples from Barn U were sent to the Gluck Equine Research Center in Kentucky for analysis, and of those, two more came back positive. Schnaars declined to name the trainer of the two horses but did say they were stabled in Barn U