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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 , ON
Outbreak Identifier: 4646
Alert ID: 2036
April 16, 2021
Confirmed Case(s) - Voluntary Quarantine

Ontario Ministry of Agriculture, Food and Rural Affairs

Number Confirmed: 3;
Number Exposed: 1
Notes: Update 4/16/2021; Original alert # 2030: On April 10, 2021 OMAFRA was notified of a case of EHM in Durham County. This horse had left the same Northumberland County facility on April 1, 2021; the same day the index horse was referred to an equine hospital for suspected treatment of EHM. The mare is at a private farm and is under veterinary supervision. Biosecurity protocols and voluntary animal movement restrictions have been implemented. On April 13, 2021, OMAFRA was notified of a confirmed case of EHM at the Northumberland county facility. The mare showed signs of ataxia and is isolated at the facility where she is receiving veterinary treatment. On April 16, 2021 The Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA) has been notified that a horse was removed from a facility in Northumberland County where cases of equine herpes myeloencephalopathy (EHM) caused by equine herpesvirus-1 (EHV-1) infection have been diagnosed (Outbreaks | Equine Disease Communication Center (equinediseasecc.org)). The movement of this horse was contrary to veterinary advice and the voluntary animal movement restrictions implemented by the facility owner. This horse is now at a vacant farm in the Municipality of Kawartha Lakes. Biosecurity protocols and voluntary animal movement restrictions are also in place at the new facility under the supervision of a veterinarian.