Outbreaks | Equine Disease Communication Center

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.

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Eastern Equine Encephalitis

Indian River County, FL

Outbreak Identifier: 7608

Alert ID: 5184

August 31, 2026

Confirmed Case(s) - No Quarantine

Source: Florida Department of Agriculture and Consumer Services and attending veterianarian

Number Confirmed: 1;

Horse 1:

Age: 16; Gender: Gelding; Breed: Quarter Horse; Use: Pleasure Riding; Onset of Clinical Signs: 8/19/2026; Confirmation Date: 8/27/2026; Clinical Signs: ataxia, extreme somnolence, nystagmus, stumbling; Horse Status: Euthanized; Date Euthanized: 8/20/2026; Vaccination Status: Undervaccinated.
Number Exposed: Unknown;
Number Euthanized: 1;
Facility Type: Private Facility;
Comments: This is the 6th confirmed case of EEE for Florida in 2026; Positive for both EEE and WNV.

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