CEM Quarantine Testing

Stallions that are imported into the U.S. as 2 year olds or older have to undergo testing for Contagious Equine Metritis (CEM). ERC has been approved to perform CEM quarantine testing on stallions and mares. Two test mares are naturally serviced by the stallion during this period but only after each mare has been blood tested for the presence of CEM and repeatedly cultured at the clitoral fossa and sinuses, uterine endometrium and cervix. Prior to breeding, cultures are taken from the stallion’s prepuce, urethral sinus and fossa. If all tests are negative for CEM then the stallion services each mare once. Following the breeding, reculturing occurs at the clitoral fossa and sinuses, endometrium and cervix of each test mare. A final blood test is done once all cultures are completed. After copulation, the stallion’s penis is thoroughly cleaned with chlorhexidine scrub and coated with nitrofurazone ointment for 5 consecutive days.