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

Grand Isle County, VT

Outbreak Identifier: 4652

Alert ID: 2037

April 17, 2021

Confirmed Case(s) - Official Quarantine

Source: Vermont Department of Agriculture, Food and Markets

Number Confirmed: 2;
Number Exposed: 20;
Facility Type: Stable;
Clinical Signs: Neurologic Signs; Horse Status: Affected And Alive; Vaccination Status: Not Reported;
Notes: The Vermont Agency of Agriculture, Food and Markets (VAAFM) Animal Health section was notified that 2 horses in Alburgh exhibiting neurologic abnormalities tested positive for Equine Herpesvirus 1 (EHV-1), resulting in a case of Equine Herpesvirus Myeloencephalopathy (EHM). The horse in question is currently under quarantine while the Agency monitors and manages the case with the attending veterinarian. One horse was euthanized. EHV-1 was recently identified as the cause of equine illness outbreaks in Florida and Europe and has led to the cancellation of several international equine events. No link between the Vermont case(s) and these outbreaks has been discovered. Case updates will be posted here at least weekly: https://agriculture.vermont.gov/animal-health/2021-case-equine-herpesvirus-myeloencephalopathy-ehm-identified-vermont;

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