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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
LaGrange County, IN
Outbreak Identifier: 5356
Alert ID: 2738
September 26, 2022
Confirmed Case(s) - No Quarantine

Indiana State Board of Animal Health

Number Confirmed: 1;
Number Suspected: 1;
Number Exposed: Unknown;
Facility Type: Farm;
Gender: Mare; Breed: Standardbred; Onset of Clinical Signs: 9/2/2022;
Clinical Signs: Mild head-pressing, hind limb ataxia, lethargy, fever; Horse Status: Deceased; Vaccination Status: Unvaccinated;
Comments: On 9/2/2022 an adult standardbred mare presented with mild head-pressing, hind limb ataxia, lethargy and fever. She was not currently vaccinated. She subsequently died, despite supportive treatment, as had one other horse on the premises with a very similar clinical presentation, just prior to the onset of her illness. On 9/23/2022 test results confirmed that she was IgM positive for Eastern Equine Encephalitis virus. The Indiana State Board of Animal Health encourages all equine owners to vaccinate their animals for the mosquito-borne illnesses, as we continue to see these viruses each year. For more information about Eastern Equine Encephalitis (EEE), go to: EEE Factsheet.
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