The quarantine on Cornell University’s equine hospital barns and several other barns owned by the College of Veterinary Medicine was lifted on April 12. The quarantine on the Equine Research Park and Annex at Cornell University was lifted on Monday, April 18. Sustained clinical monitoring and PCR testing indicated no active disease in any animals, and the Equine Hospital is now operating under normal status.
EHV-1 is a highly endemic virus and acute transmission leads to a complex quarantine strategy. The goal is to prevent further transmission of a virus to which essentially all horses have previously been exposed and of which approximately 60% are latently infected. The index case in Cornell’s hospital was a foal from an previously infected mare, and EHV-1 was transmitted from the foal to one horse, now recovering in our isolation facility.