By now you have likely heard about the current EHV 1 and EHM outbreak affecting the horse industry. The situation has placed many facilities and owners on high alert as new cases continue to emerge across the country. As a result we are now seeing show cancellations, travel restrictions, and strengthened biosecurity requirements at barns and training centers.
To reduce the risk of further spread, it is essential for every horse owner, trainer, and facility manager to understand the facts about this virus. Knowing the symptoms, the risks, and the correct response protocols helps protect the horses in your care and supports the broader equine community. Here is what you need to know about this outbreak.
What is EHV
Equine Herpesvirus is a highly contagious virus that primarily affects horses. There are nine known strains of EHV, but only a few are considered serious threats. Unfortunately EHV 1 is one of them. This particular strain can lead to Equine Herpesvirus Myeloencephalopathy, which is a neurological form that causes significant and sometimes sudden symptoms.
Common symptoms include:
- Fever
- Nasal discharge
- Coughing or other respiratory signs
- Neurological issues such as hind end weakness, trouble standing, or loss of coordination
- Late term abortion in broodmares
If your horse shows any of these symptoms, contact your veterinarian immediately.
Who EHV Can Impact
EHV most commonly affects horses, donkeys, and mules. In rare cases it has also been identified in llamas and alpacas. It cannot be transmitted to people or to household animals such as dogs or cats.
How EHV Spreads
EHV is highly contagious and can move rapidly through barns, events, or transport environments. The virus can be transmitted through:
- Direct contact between horses
- Aerosolized respiratory droplets
- Shared equipment such as water buckets, tack, brushes, stalls, and trailers
- Human hands and clothing that carry the virus from one horse to another
Because of the variety of transmission routes, careful management is essential during an outbreak.
How Quickly Symptoms Appear
The incubation period for EHV can vary widely. Some horses may show symptoms within twenty four hours of exposure, while others may take between two and fourteen days to exhibit signs of illness. Since symptoms can progress quickly, especially in neurological cases, consistent monitoring is important during an outbreak.
What to Do if You Suspect EHV Exposure or Illness
If your horse shows signs of EHV 1 or EHM, or has been exposed to another affected horse, immediate action is key. Recommended steps include:
- Contact your veterinarian. Notify your vet right away so that testing and care can begin promptly.
- Quarantine the affected horse. Separate the infected horse from others for a minimum of twenty one to twenty eight days. Use separate clothing and equipment when caring for that horse and avoid bringing contaminated items back into common areas.
- Monitor all horses in the facility. Even horses with no direct contact may be at risk due to airborne particles or contamination on shared surfaces. Take temperatures twice daily and watch for signs of fever.
- Stop all travel. No horses should leave or enter the property until cleared by a veterinarian.
- Disinfect all equipment and surfaces. Clean anything that may have come in contact with the infected horse. This includes water buckets, tack, brushes, trailers, door handles, and stall surfaces. Additional protocols may be needed for farriers, body workers, and other service providers who visit the property.
EHV and Its Impact on Travel and Competition
Because of how easily this virus spreads, outbreaks often lead to show cancellations and temporary travel restrictions. These measures help prevent wider exposure. Although the limitations can be frustrating, they play an important role in keeping horses healthy across regions.
Following all travel and competition guidelines protects your horses and helps limit industry wide disruption.
Why EHV Is Serious
Many horse health issues raise concern, but EHV stands out for several reasons. The virus spreads quickly, can cause severe neurological symptoms, and once a horse contracts EHV 1, the virus remains in the body even after recovery. Stress such as travel, training, changes in environment, or illness can reactivate the virus later, which may put other horses at risk.
Beyond the health impact, EHV can cause significant economic strain. Facilities may need to temporarily close, owners may face substantial veterinary expenses, and competitions may be delayed or cancelled. Most importantly, outbreaks remind us that informed and proactive management is essential. Responsible practices protect individual barns and contribute to the safety of the entire equine industry.
Where to Find More Information
Staying updated on prevention guidelines and outbreak reports is essential during an active situation. Reliable sources include the Equine Disease Communication Center and the American Horse Council. You can also check with your veterinarian and local equine health departments for region specific information and recommendations.
Although this recent EHV outbreak has created understandable concern, it also shows the power of quick action and community awareness. With informed care, strong biosecurity practices, and thoughtful decision making, we can help protect our horses and support a safe return to travel, training, and competition.
Wishing everyone a safe and healthy season with their horses.