
Equine influenza has been detected in a horse in Gallatin County, Montana, leading to the horse being placed in quarantine.
EDCC Health Watch, a program by Equine Network, leverages information from the Equine Disease Communication Center (EDCC) to generate and circulate authenticated equine disease updates. The EDCC is a nonprofit organization that relies on industry contributions to provide accessible infectious disease information.
Understanding Equine Influenza
Equine influenza is a highly contagious respiratory illness that affects horses, ponies, and other equids like donkeys, mules, and zebras. The virus responsible for this disease spreads through saliva and respiratory secretions from infected horses. Common transmission routes include direct horse-to-horse contact, aerosol transmission from coughing and sneezing, and contact with contaminated hands, gear, or equipment.
Symptoms of equine influenza may include a high fever, dry cough, lethargy, weakness, loss of appetite, nasal discharge, and swollen lymph nodes. Monitoring your horse’s health, especially at events, by checking its temperature daily can assist in early detection and appropriate action to prevent disease spread.
Vaccination is a crucial and cost-effective method to safeguard your horse. US Equestrian mandates proof of equine influenza vaccination within six months before attending sanctioned events. Consult your vet to determine additional vaccines that may benefit your horse.
Implementing rigorous biosecurity measures alongside vaccination can decrease the risk of infection and disease in your horse. These measures include isolating new equine arrivals, disinfecting equipment, and preventing direct contact between horses.

