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SESK: Stuff Everyone Should Know · sesk.info/horse-eia-no-cure

Is there a vaccine or cure for equine infectious anemia?

No cure and no vaccine, so testing and prevention matter.

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  1. Yes, a yearly vaccine
  2. Yes, a cure given by injection
  3. No, there is no vaccine and no treatment ✔

Why: Once a horse is infected with EIA, the infection is lifelong. APHIS says there is no treatment or vaccine, so owners rely on testing and keeping infected horses away from others.

Huh, didn't know that: Most infected horses show no signs, but acute cases can bring fever, poor appetite or sudden death.

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References

Answer: No, there is no vaccine and no treatment. Once a horse is infected with EIA, the infection is lifelong. APHIS says there is no treatment or vaccine, so owners rely on testing and keeping infected horses away from others.

  1. Equine Infectious Anemia (USDA APHIS) www.aphis.usda.gov/livestock-poultry-disease/equine/infectious-anemia
    There is no treatment or vaccine.
    Checked 2026-10-10.
  2. Equine Infectious Anemia (EIA) Disease Guidelines (AAEP) aaep.org/resource/equine-infectious-anemia
    no known cure and no vaccine for prevention
    Checked 2026-10-10.
  3. Equine Infectious Anemia (EIA) Disease Guidelines (AAEP) aaep.org/resource/equine-infectious-anemia
    Most infected horses are asymptomatic, showing no signs of disease.
    Checked 2026-10-10.
  4. Equine Infectious Anemia (EIA) Disease Guidelines (AAEP) aaep.org/resource/equine-infectious-anemia
    Acutely infected animals may develop a fever, go off feed, or die suddenly.
    Checked 2026-10-10.

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