Mosquitoes that feed on EEE-infected birds can transmit the virus to humans, horses, and other birds. | Photo: iStock

Florida Department of Agriculture and Consumer Services (FDACS) officials have confirmed horses in three counties—Baker, Holmes, and Jackson—with Eastern equine encephalomyelitis (EEE).

In Baker County, an undervaccinated 3-year-old Quarter Horse gelding began experiencing clinical signs on June 17 and subsequently died.

In Holmes County, three horses are reported as affected. One, a Quarter Horse foal that began showing clinical signs on June 9, is reported as recovering. The other two—a 10-year-old Quarter Horse mare that showed clinical signs on June 8 and a yearling Quarter Horse colt that showed clinical signs on June 3—were both euthanized