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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Strangles

Madison County, IL

Outbreak Identifier: 7112

Alert ID: 4633

October 02, 2025

Confirmed Case(s) - Voluntary Quarantine

Source: Attending veterinarian

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

Horse 1:
Age: 16; Gender: Gelding; Breed: Arabian; Usage: Pleasure Riding; Onset of Clinical Signs: 9/9/2025; Clinical Signs: Severe dyspnea (required tracheotomy), submandibular lymphadenopathy, bilateral nasal discharge, lethargy; Confirmation Date: 9/15/2025; Horse Status: Recovering; Vaccination Status: Status Unknown;

Comments: Patient was bought at the end of August. Other horse on farm was bought a week prior to the patient, and that horse had nasal discharge a few days before this patient at the beginning of September. The patient then developed severe symptoms a few days later. Both horses were bought from separate boarding stables/training facilities in the same county. The first horse bought had a history of receiving a strangles vaccination per the previous owner.;

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