Equine Infectious
Anemia (EIA) is a potentially fatal disease that threatens the world’s
horse, donkey and mule populations. The virus that causes EIA reproduces
in the white blood cells that circulate throughout the body. The immune
system, via antibodies, may attack and destroy red blood cells, leading
to anemia. Infected horses may die from the direct effects of the virus
or from secondary infections. Despite testing and measures to eradicate
the equine infectious anemia virus, EIAV, more than 500 new cases are
identified each year in the U.S.
There is no cure for EIA. Although most horses show no symptoms, they
remain contagious for life, endangering the health of other horses. For
this reason, the United States Department of Agriculture and state
animal health regulatory agencies require euthanasia or strict lifelong
quarantine for horses testing positive for EIA.
Your horse’s only protection against EIA is prevention. Good
management practices can reduce the potential of infection. The
following guidelines from the American Association of Equine
Practitioners (AAEP) will help:
· Use disposable needles and syringes, one per horse, when
administering vaccines and medications.
· Sterilize dental tools and other instruments before using them on
another horse.
· Test all horses for EIA at least annually.
· Test horses at the time of purchase examination.
· Stable owners, horse show and event managers should require and
verify current negative Coggins certificates for all horses entering the
premises.
· New horses should be quarantined for 45 days and observed for any
signs of illness, including elevated temperatures, before introducing
them to the herd. They should be retested if exposure to EIA is
suspected at a 45-day interval.
· All stable areas should be kept clean, dry and waste-free. Good
pasture management techniques should also be practiced. Remove manure
and provide adequate drainage to discourage breeding sites for pests.
· Horses at greater risk, such as those in frequent contact with
outside horses or who live or travel in geographic regions known for EIA
outbreaks, should be tested more frequently, every 4 – 6 months.