With no additional positive tests for Equine herpesvirus type 1 (EHV-1) since Feb. 26, Penn National Race Course was prepared to lift the quarantine of horses stabled in Barn U on March 19, according to track general manager Richard Schnaars.

Of the original 36 horses stabled in Barn U, five tested positive for EHV-1. Two of the horses had to be euthanized, while three are recovering

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