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Equine Herpesvirus Myeloencephalopathy (EHM) Outbreak
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Disease Alerts

Updates on current disease outbreaks are listed here as they occur and will include the date listed, disease name, location and current status. Specific premises will not be named but the general location by town, county and state will be listed. When locations, events or horses are at risk they will be listed. Updates will be posted as they are received.



Madison County, FL
Outbreak Identifier: 6912
Alert ID: 4426
July 09, 2025
Confirmed Case(s) - No Quarantine

FDACS Veterinary Medical Officer

Number Confirmed: 1; 
Number Suspected: Unknown; 
Number Exposed: Unknown; 
Number Euthanized: 1; 
Facility Type: Private Facility; 

Horse 1: 
Age: Yearling; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 6/30/2025; Clinical Signs: Neurologic; Confirmation Date: 7/3/2025; Horse Status: Euthanized; Vaccination Status: Unvaccinated;

Comments: This is Florida's 5th confirmed case of EEE for 2025.;