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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Equine Herpesvirus- Abortion

Pontotoc County, OK

Outbreak Identifier: 4619

Alert ID: 1993

March 16, 2021

Confirmed Case(s) - Official Quarantine

Source: Oklahoma Department of Agriculture

Number Confirmed: 1;
Number Exposed: 3;
Facility Type: Private Facility;
Age: 8; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 3/9/2021;
Clinical Signs: Late term aborted foal found in the pasture during morning feeding. The mare has shown no clinical signs of illness.; Confirmation Date: 3/11/2021; Horse Status: Affected And Alive; Vaccination Status: Vaccinated;
Notes: Liver from the aborted foal was positive for EHV-1. Nasal swab and buffy coat for the mare were negative for EHV-1. The affected mare was pastured with 3 other equine. There are no shared fence lines with other horses. None of the equine have left the premises in the past 6 months. These equine were placed under a 21 day quarantine without testing and owner is monitoring closely for clinical signs of illness.

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