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.

Disease

Outbreak States

Start Date

End Date

Salmonellosis

Carroll County, MD

Outbreak Identifier: 6775

Alert ID: 4268

March 19, 2025

Confirmed Case(s) - Voluntary Quarantine

Source: Attending veterinarian

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

Horse 1:
Age: 8; Gender: Gelding; Breed: Arabian; Onset of Clinical Signs: 3/15/2025; Clinical Signs: The gelding was evaluated by the referring veterinarian for colic and fever on 3/15/25, and was referred to a hospital for treatment and diagnostics. The gelding was admitted to the isolation facility and subsequently diagnosed with putative intestinal hyperammonemia secondary to Salmonella infection. He remains hospitalized, but is responding to medical management.; Confirmation Date: 3/18/2025; Horse Status: Isolated;

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