By Scout Nelson
North Dakota animal health officials are closely monitoring a multi-state outbreak of Equine Herpesvirus-1 (EHV-1) and its neurologic form, Equine Herpesvirus Myeloencephalopathy (EHM).
The outbreak is linked to horses that attended or were associated with barrel racing and rodeo-style events held in Texas and Oklahoma. Several cases of EHM have already been confirmed in those states, and reports of possible additional cases and horse deaths are still under investigation.
At this time, there are no confirmed cases of EHV-1 or EHM in North Dakota. However, the State Veterinarian’s Office is in active communication with officials in the affected states.
North Dakota has already received tracing information related to horses that may have been exposed, and the owners of those horses will be contacted directly. Quarantines will be issued when necessary to help prevent further spread of the disease.
“This outbreak serves as a reminder of the potential disease risks associated with large commingling equine events,” State Veterinarian Dr. Ethan Andress said. “It underscores the importance of timely reporting of diseases and ensuring that movement requirements are followed, including veterinary inspection and health certificates prior to travel.”
EHV-1 spreads easily through direct contact, shared equipment, human hands, clothing, and even through the air. To reduce the chance of infection, horse owners are encouraged to avoid sharing water or feed containers, prevent nose-to-nose contact between animals, and practice strong daily biosecurity.
All horses entering North Dakota must have a valid certificate of veterinary inspection. Dr. Andress encourages owners whose horses recently traveled to high-risk events in Texas, Oklahoma, or other locations to contact the office for guidance on isolation and monitoring.
He explains that prevention begins with keeping sick animals at home and staying aware of the risks when traveling or competing.
EHV-1 can cause respiratory illness, abortion in pregnant mares, newborn foal death, and in some cases, the neurologic condition EHM. Current vaccines may help reduce viral shedding but do not protect against the neurologic form. Agriculture Commissioner Doug Goehring urges owners to work with their veterinarians on strong preventive plans.
Although very contagious among horses, EHV-1 does not pose a risk to human health.
Photo Credit: gettyimages-patrick-jennings
Categories: North Dakota, Livestock