An attending veterinarian reported a confirmed case of respiratory equine herpesvirus in Montgomery County, Maryland. The 12-year-old pony mare had onset of clinical signs on February 22 that included a mild fever, coughing and nasal discharge. The vaccinated pony was confirmed with respiratory equine herpesvirus on February 28. She is recovering.

There are three other horses on the premises that have been exposed, and the property is under a voluntary quarantine.

Information for this report was provided by the Equine Disease Communication Center.