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

Montgomery County, MD

Outbreak Identifier: 7322

Alert ID: 4870

February 05, 2026

Confirmed Case(s) - Official Quarantine

Source: University Clinician, Private Practitioner and State Animal Health Official

Number Confirmed: 1;
Number Suspected: 4;
Number Exposed: Unknown;
Facility Type: Boarding Facility;

Horse 1:
Onset of Clinical Signs: 1/20/2026; Clinical Signs: The index case had fever and nasal discharge and subsequently tested positive for Strep equi on nasopharyngeal wash PCR. Four other horses have shown clinical signs of strangles including fever, nasal discharge, and guttural pouch empyema, but have been negative on PCR of guttural pouch fluid.; Horse Status: Quarantined; Vaccination Status: Vaccinated;

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