This fall, equine herpesvirus-1 (EHV-1) spread among patients in the veterinary hospital at Colorado State University (CSU), despite the fact the school runs one of the nation’s top veterinary biosecurity programs. The finding forced 20 hospitalized horses into a quarantine, which is expected to be lifted Nov. 17.

The outbreak apparently began after hospital staff admitted a critically ill and partially paralyzed horse on Oct. 23. Because EHV-1 was suspected, the horse was isolated from the hospital population and managed with increased biosecurity precautions. Lab tests did not confirm the diagnosis for 10 days, but in the interim, two horses hospitalized for other reasons developed unexplained fevers.

COURTESY DR. GEORGE ALLEN This horse is displaying clinical signs of a neurologic disorder Create a free account with TheHorse.com to view this content. TheHorse.com is home to thousands of free articles about horse health care. In order to access some of our exclusive free content, you must be signed into TheHorse.com. Start your free account today! SIGN UP Already have an account? Login and continue reading. Share Judith Lee Judith Lee is a freelance health care writer who has written for a number of medical and health care journals and health care companies. As a long-time equestrian and horse owner, she has a particular interest in equine health care. She also operates an equestrian education program, Riding for Fun, geared toward adult beginners and returning riders. MORE ARTICLES BY THIS AUTHOR PrevPreviousColorado State Veterinary Teaching Hospital Implements Precautionary Suspension of Elective Equine Admissions NextOkla. 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