The state veterinarian is warning horse owners of four cases of equine infectious anemia (EIA) in Middle Tennessee.

Staff at the C.E. Kord Animal Health Diagnostic Laboratory tested blood samples and determined that four horses stabled at a farm in Rutherford County were positive for EIA, according to a release from the Department of Agriculture.

Those horses were euthanized. Six other horses at the same farm tested negative but will remain in quarantine until they can be tested a second time, according to officials.

EIA is a blood-borne illness that can be fatal for horses. Symptoms may include fever, weakness, swelling, loss of appetite or colic.

However, an infected horse may not show any clinical signs. There is no treatment or vaccine. Once infected, a horse must be permanently quarantined or euthanized, according to officials.

The Department of Agriculture says EIA is not contagious to humans.

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