All horses, including ponies, entering or stabling on the grounds of any pari-mutuel racetrack in Illinois shall have documented proof of EHV-1 vaccination administered within the prior 180 days. No entries shall be accepted by the Racing Secretary without documented proof of a current EHV-1 vaccination. The Racing Secretary shall maintain records to substantiate current vaccinations of all horses entering or stabling on the grounds.
Ill. Admin. Code tit. 11, § 605.60