In each county, a Quarter Horse tested positive for EIA in late April, the EDCC said.
“The premises will remain under quarantine until requirements for release have been met,” the EDCC said. “TAHC staff is working closely with owners and veterinarians to monitor potentially exposed horses and implement biosecurity measures.”
Equine infectious anemia is a viral disease that attacks horses’ immune systems. The virus is transmitted through the exchange of body fluids from an infected to a uninfected animal, often by blood-feeding insects such as horseflies. It can also be transmitted through the use of blood-contaminated instruments or needles.
A Coggins test screens horses’ blood for antibodies that are indicative of the presence of the EIA virus. Most U.S. states require horses to have proof of a negative Coggins test in order to travel.
Once an animal is infected with EIA, it is infected for life and can be a reservoir for the spread of disease. Not all horses show signs of disease, but those that do can exhibit:
- Progressive condition loss;
- Muscle weakness;
- Poor stamina;
- Depression; and
There is no vaccine and no cure. A horse diagnosed with EIA dies, is euthanized, or must be placed under extremely strict quarantine conditions (at least 200 yards away from unaffected equids) for the rest of his life.