Calder Casino & Race Course lifted a virus-related quarantine Dec. 21, allowing 60 horses to resume normal training and racing.

The quarantine was enacted at the Miami Gardens, Fla., track in late November, after one horse was diagnosed with equine herpesvirus-1.

Horses are now permitted to ship to Calder for racing.

"While the quarantine was hard on our December performance, our team was successful to effectively isolate the infection and prevent it from affecting others," Calder Vice President and General Manager of Racing John Marshall said in a statement. "We appreciate the patience of our horsemen, and cooperation of several agencies at the state and federal levels; we contained a very serious situation, ensuring the overall safety and welfare of our industry's participants