Ontario Equine Disease Alerts

Eastern Equine Encephalitis

United Counties of Stormont, Dundas and Glengarry, ON

Alert ID: 2021-12

June 18, 2021

Source: OMAFRA

Number Confirmed: 1;

Age: 26 year old.

Clinical Signs: On June 17, 2021, the Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA) was notified of a confirmed case of eastern equine encephalitis (EEE) in a 26-year-old horse located in the United Counties of Stormont, Dundas and Glengarry. The unvaccinated horse developed intermittent bouts of recumbency with somnolence and mild muscle fasciculations with periods of normal behaviour and mentation in between. These signs occurred over the course of several days. The horse is recovering. Laboratory diagnostic testing confirmed infection with the EEE virus (EEEv).

Notes:

To download a PDF with more information, please click here: https://www.oahn.ca/wp-content/uploads/2021/06/Veterinary-update-Eastern-Equine-Encephalitis-2021-06-18-final-002.pdf

Equine Herpesvirus- Abortion

Regional Municipality of York, ON

Outbreak Identifier: NA

Alert ID: 2021-11

April 7, 2021

Confirmed Case(s) – Voluntary Quarantine

Source: OMAFRA

Number Confirmed: 1;

Facility Type: Farm;

Age: 23 yo broodmare

Notes: Aborted at 315 days of gestation; Affected and Alive. Clinical symptoms observed April 3, 2021, with swab PCR confirmation April 7, 2021. Positive on placental and fetal tissue.

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Equine Herpesvirus 1: Neurologic

Northumberland County, ON

Alert ID: 2021-10

April 6, 2021

Confirmed Case(s) – Voluntary Quarantine

Source: OMAFRA

Number Confirmed: 1;

Facility Type: Boarding Facility;

Age: 24 year old draft cross mare;

Clinical Signs: ataxia and difficulty urinating and defecating ; Confirmation Date: 4/6/2021; Horse Status: Recovering;

Notes:

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Equine Herpesvirus 1: Neurologic

Municipality of Kawartha Lakes and Wellington County, ON

March 31, 2021

Confirmed Case(s) – Voluntary Quarantine

Source: OMAFRA

 

Municipality of Kawartha Lakes

Alert ID: 2021-8

Number Confirmed: 1;

Number Exposed: Unknown;

Facility Type: Boarding Facility;

Age: 17; Gender: Gelding; Onset of Clinical Signs: 3/24/2021;

Clinical Signs: Ataxia, Nasal Discharge; Confirmation Date: 3/25/2021; Horse Status: Recovering; Vaccination Status: Vaccinated;

Notes: Under veterinary supervision, the affected horse has been isolated and the facility owner has instituted enhanced biosecurity procedures and animal movement restrictions. No other horses on the property have shown clinical signs. For more information about EHM go to https://equinediseasecc.org/Content/ContentDocs/DiseaseFactsheet-EHM.pdf;

 

Wellington County

Alert ID: 2021-9

Number Confirmed: 1;

Facility Type: Boarding Facility;

Age: 19; Gender: Gelding; Breed: Pony; Onset of Clinical Signs: 3/24/2021;

Clinical Signs: Ataxia, Difficulty urinating; Confirmation Date: 3/26/2021; Horse Status: Affected And Alive; Vaccination Status: Vaccinated;

Notes: The affected pony is being treated at a referral hospital. No other horses on the property are showing clinical signs. Under veterinary supervision, the facility manager has instituted biosecurity protocols and animal movement restrictions.

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Equine Herpesvirus 1: Neurologic

Municipality of Niagara, ON

Outbreak Identifier: 4624

Alert ID: 2021-7

March 19, 2021

Confirmed Case(s) – Official Quarantine

Source: OMAFRA

Number Confirmed: 1;

Facility Type: Private Facility;

Age: Mature Gender: Gelding; Breed: Not Reported; Clinical Signs: Difficulty urinating, Incoordination of Hind Limbs- Severe, Progressing to Being Down with an Inability to Get Up; Confirmation Date: 3/16/2021; Horse Status: Euthanized; Vaccination Status: Status Unknown;

Notes: On March 16, 2021 the Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA) was notified of a confirmed case of equine herpes myeloencephalopathy (EHM) caused by equine herpesvirus-1 (EHV-1) infection at an equine facility in the Regional Municipality of Niagara.  The facility is under veterinary supervision and the farm staff have implemented biosecurity procedures and movement restrictions. This is the fifth equine facility in the province this year that has had a confirmed EHV-1 infection causing neurologic disease.

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Equine Herpesvirus 1: Abortion

Dufferin County and Regional Municipality of York, ON

March 09, 2021

Confirmed Case(s) – Voluntary Quarantine

Source: OMAFRA

 

Dufferin County

Alert ID: 2021-5

Number Confirmed: 1;

Facility Type: Boarding Facility;

Gender: Mare; Breed: Thoroughbred (TB); Onset of Clinical Signs: 2/27/2021;

Clinical Signs: Aborted during 10th month of pregnancy; Confirmation Date: 3/2/2021; Horse Status: Recovering; Vaccination Status: Vaccinated;

Notes: The facility manager has placed the farm under voluntary movement restrictions for 21 days and staff have implemented heightened biosecurity protocols with veterinary supervision.;

 

Regional Municipality of York

Alert ID: 2021-6

Number Confirmed: 1;

Facility Type: Private Facility;

Age: Not Reported; Gender: Mare; Breed: Thoroughbred (TB); Onset of Clinical Signs: 3/1/2021;

Clinical Signs: Foal was stillborn; Confirmation Date: 3/4/2021; Horse Status: Recovering; Vaccination Status: Vaccinated;

Notes: The farm manager has isolated the mare and implemented a voluntary 21 day movement restriction. Heightened biosecurity measures are in place and under the supervision of the farm veterinarian.

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Strangles

Cambridge, ON

Outbreak Identifier: 4596

Alert ID: 2021-4

February 19, 2021

Confirmed Case(s) – Official Quarantine

Source: Alcohol and Gaming Commission of Ontario

Number Confirmed: 1;

Breed: Standardbred;

Clinical Signs: Not Reported;

Notes: The Alcohol and Gaming Commission of Ontario (AGCO) was informed a Standardbred race horse at Shamrock Training Centre that had travelled from Red Shores Racetrack in PEI on Sunday February 14, 2021 with four other horses has tested positive for strangles. The race horse is in isolation at another property as of Tuesday February 16, 2021.

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Equine Herpesvirus 1: Neurologic

Regional Municipalities of Peel and Niagara, ON

February 18, 2021

Confirmed Case(s) – Official Quarantine

Source: OMAFRA

 

Regional Municipality of Peel

Alert ID: 2021-2

Number Confirmed: 1;

Facility Type: Private Facility;

Age: 18; Gender: Gelding; Horse Status: Euthanized; Clinical Signs: Incoordination of Hind Limbs- Severe, Progressing to Being Down with an Inability to Get Up;

 

Regional Municipality of Niagara

Alert ID: 2021-3

Number Confirmed: 1;

Age: 7; Gender: Mare;

Clinical Signs: Progressing to Being Down with an Inability to Get Up, Difficulty urinating;

Notes: Both facilities are under veterinary supervision and the farm managers have implemented biosecurity procedures and movement restrictions. There are now three equine facilities in the province with a confirmed EHV-1 infection causing neurologic disease.

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Equine Herpesvirus 1: Neurologic

Regional Municipality of Halton, ON

Alert ID: 2021-1

February 05, 2021

Confirmed Case(s) – Official Quarantine

Source: OMAFRA

Number Confirmed: 2;

Facility Type: Private Facility;

Notes: On February 4, 2021, the Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA) was notified of two confirmed cases of equine herpesvirus-1 (EHV-1) infection at an equine facility in the Regional Municipality of Halton. Both horses had a fever and were tested as part of a follow-up investigation into the deaths of three horses at the facility. The three horses were euthanized between January 29- February 3 following sudden onset of sever incoordination and being down and unable to rise. The facility in under veterinary supervision and the manager has implemented strict biosecurity measures and movement restrictions.

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