The California Horse Racing Board (CHRB) announced Thursday that all horses stabled at or en route from Turf Paradise racetrack, in Phoenix, Arizona, will be denied access to California racetracks and other facilities within the board’s jurisdiction. The move comes as a result of the California Department of Food and Agriculture’s (CDFA) determination that a horse at Turf Paradise was confirmed to have vesicular stomatitis (VS).

Horses from confirmed VS premises are not allowed by the CDFA into California.

In its advisory, the CHRB said that “horses previously stabled at Turf Paradise that already have entered CHRB-controlled facilities have been placed under special surveillance and health monitoring.”

In recent weeks VS has been confirmed in equids in New Mexico, Arizona, and Utah