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- Neurologic

Baltimore County, MD

Outbreak Identifier: 4064

Alert ID: 1534

November 23, 2019

Confirmed Case(s) - Official Quarantine

Source: Maryland Department of Agriculture

Number Confirmed: 1;
Number Exposed: 25;
Age: Not Reported; Gender: Not Reported; Breed: Not Reported; Onset of Clinical Signs: Not Reported;
Clinical Signs: Not Reported; Confirmation Date: Not Reported; Horse Status: Euthanized; Vaccination Status: Status Unknown;
Notes: The Maryland Department of Agriculture’s Animal Health Program confirmed a horse in Baltimore County tested positive for Equine Herpesvirus (EHV-1) on Nov. 21, 2019. Samples from the symptomatic horse were sent to the Frederick Animal Health Laboratory, where the non-neurotropic strain of EHV-1 was confirmed. The horse was euthanized yesterday due to complications. The Baltimore County farm has been placed on a hold order by the department, prohibiting movement on or off the farm until any exposed horses have been cleared for release. The horse was previously housed in an isolated barn with three other horses. The farm stables a total of 25 horses, none of which are showing clinical signs of EHV-1 or fever at this time. The veterinary practitioner and stable are providing follow-up care to the asymptomatic horses on the farm. Possible links to the positive EHV-1 equine are actively being investigated. For more information go to: https://news.maryland.gov/mda/press-release/2019/11/22/baltimore-county-horse-tests-positive-for-equine-herpesvirus/

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