Equine influenza—commonly referred to as horse flu—is a fast-spreading viral respiratory disease that primarily affects young and traveling horses. It's one of the most contagious equine illnesses and can cause widespread outbreaks if not managed properly.
How It Spreads
- Through airborne droplets from coughing or sneezing horses
- Via shared water buckets, tack, or handlers
- At events, shows, and boarding barns
- When new horses are introduced without quarantine
Symptoms of Equine Influenza
- High fever (often 102–106°F)
- Dry, hacking cough
- Nasal discharge
- Lethargy and loss of appetite
- Muscle soreness or stiffness
How to Treat & Support Recovery
- Isolate affected horses immediately
- Provide plenty of rest and hydration
- Reduce dust exposure and improve airflow
- Monitor temperature and breathing
- Consult your vet for anti-inflammatories or supportive care
Prevention Through Vaccination
- Vaccinate regularly—especially show or travel horses
- Follow a veterinarian-advised vaccine schedule
- Quarantine new arrivals for 14 days
- Disinfect stalls, gear, and grooming tools between horses
Why It Matters
Equine flu isn’t typically fatal, but it can sideline your horse for weeks—and spread like wildfire through a barn. Prevention, early isolation, and vaccination are your best defenses against disruption and discomfort.