COLUMBIA, S.C. (AP/WVOC) - Officials say a horse from Sumter County that recently died tested positive for eastern equine encephalitis.
State veterinarian Dr. Boyd Parr says the foal's death is the first this year from the mosquito-borne illness that can also affect humans.
Two adult horses that died at the same farm around the same time are also suspected of having EEE.
Symptoms in horses include stumbling, partial paralysis and the inability to stand.
The symptoms usually develop from two to five days after exposure. Nine out of every 10 horses infected with EEE virus die.
Parr is urging horse owners to consult their veterinarians to ensure vaccinations against both EEE and West Nile Virus are up-to-date.
(Photo courtesy of Centers for Disease Control and Prevention)