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- Respiratory

Washtenaw County, MI

Alert ID: 887

April 19, 2018

Source: Michigan Department of Agriculture and Rural Development

On March 27, the Michigan Department of Agriculture and Rural Development confirmed its first case of equine herpesvirus myeloencephalopathy (EHM) for 2018 in a five-year-old Standardbred gelding from Washtenaw County. The horse was immediately quarantined off-site and 16 horses other horses were quarantined where the horse had originated. The 16 horses were monitored twice a day for fevers and sign of herpesvirus, starting the day the EHM positive horse was removed from the premises. As of April 17, the other 16 horses have had 21 consecutive days without the presence of fevers or clinical signs and have been released from quarantine. The EHM positive horse is currently recovering and being quarantined at a separate premises where there are no equine within 30 feet of the property.

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