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Disease Alerts

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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Northumberland County, PA
Outbreak Identifier: 7219
Type: EHV-4
Alert ID: 4744
November 23, 2025
Information Only

Attending veterinarian

Number Confirmed: 1; 
Number Exposed: Unknown; 
Comments: This horse is EHV-4 positive, and is not associated with the EHM outbreak centered in Waco, TX. The horse was at the Keystone Yearling and Breeder's Sale on Nov 7th and 8th in Bloomsburg, PA.