All horses traveling internationally must undergo a USDA mandated quarantine period of 3 days, followed by mandatory CEM quarantine for mares (14 days) and Stallions (35 days). Exempt from this rule are U.S. horses traveling between Canada and the U.S.
During the 3 day quarantine period, horses must test negative for Dourine, Glanders, Equine Piroplasmosis, and Equine Infectious Anemia (EIA). The CEM quarantine is designed to test mares and stallions for any possible sexually transmitted diseases.
Additionally, all horses being imported into the U.S. must have a valid health certificate issued by a veterinary officer accredited by the national government of the exporting country.