Several cases of the equine herpes virus have been confirmed in horses in North Dakota and surrounding states this spring. The recent cases are a reminder for horse owners to practice good biosecurity. EHV can be spread by airborne droplets, as well as contaminated tack, feed and other items. NDSU Extension veterinarian Gerald Stokka says contacting veterinarian quickly is important for getting the right diagnosis and treatment for the virus. More information on how to protect horses from EHV can be on the American Association of Equine Practitioners website.