GAINESVILLE, Fla. (AP) - Alachua County is under a mosquito-borne illness advisory.

Two animal cases of Eastern Equine Encephalitis have been confirmed on opposite ends of the county. The illness is a viral disease that affects the central nervous system. It's transmitted by infected mosquitoes.

A sentinel chicken near the Waldo area and a horse in southern Alachua County between Gainesville and Micanopy both tested positive for the illness. The horse had to be euthanized.

The advisory was issued Thursday.

Florida Agriculture and Consumer Services Commissioner Charles Bronson also recommended that horse owners have their animals vaccinated against EEE this year because of the increase in the number of reported infections.