Importation of Horses From Contagious Equine Metritis-Affected Countries

We are adopting as a final rule, with changes, an interim rule that amended the regulations regarding the importation of horses from countries affected with contagious equine metritis (CEM) by incorporating an additional certification requirement for imported horses 731 days of age or less and adding new testing protocols for test mares and imported stallions and mares more than 731 days of age. This document revises certain CEM-testing requirements for imported stallions and mares, and for test mares, that were amended in the interim rule. The interim rule was necessary to provide additional safeguards against the introduction of CEM through the importation of affected horses.