Horse Equine Influenza Vaccination Programs

Equine influenza is a highly contagious respiratory virus that can devastate horse populations, making vaccination programs essential for herd health and welfare.

Key Facts

Equine influenza spreads rapidly through respiratory droplets at competitions and events
The H3N8 subtype causes most equine influenza outbreaks worldwide
Unvaccinated horses can develop severe pneumonia and die
Vaccination significantly reduces disease severity even if not fully protective
The FEI and most major equestrian bodies require proof of vaccination
New strains emerge requiring regular vaccine updates
Young horses and elderly horses face the highest disease risk
The 2007 Australian outbreak infected over 76,000 horses

Welfare Considerations

Equine influenza causes intense respiratory distress, high fever, and profound weakness that can persist for weeks. Horses in pain from respiratory illness often refuse food and water, worsening their condition. Mass outbreaks cause widespread suffering across entire equestrian communities. The virus also causes long-term lung damage that can permanently affect athletic performance and quality of life.

What You Can Do

Maintain your horse on the recommended vaccination schedule
Keep vaccination records up to date for competition compliance
Isolate new horses before introducing them to established herds
Support research into more broadly protective equine influenza vaccines
Learn outbreak response protocols from your veterinarian