The Florida Department Agriculture and Consumer Services reported the confirmation of a Eastern Equine Encephalitis (EEE) in a 1-year-old colt in Levy County.
On June 16, the unvaccinated horse presented with seizure like activity on owners property, then became laterally recumbent with dull mentation and nystagmus.
EEE was confirmed on June 23 and the horse was euthanized.
This is the 5th confirmed case of EEE for Florida in 2022.
Eastern Equine Encephalitis (EEE) is spread to horses and humans by infected mosquitoes, including several Culex species and Culiseta melanura.
In horses, the virus causes inflammation or swelling of the brain and spinal cord. General symptoms include central nervous system signs such as: head pressing, convulsions, lack of response to facial stimulation, fever above 103 degrees, ataxia, paralysis, anorexia, depression and stupor. Other symptoms may include irregular gait, teeth grinding, in-coordination, circling, and staggering. All symptoms may not be exhibited by an infected horse.
The mortality rate in horses from EEE is almost 90%.
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