Ontario

Equine Disease Alerts

Risk Assessment

Risk Level
🟠 Elevated
Multiple cases - enhanced biosecurity recommended
Cases (30 days)
4
Total Cases
164
Total Alerts
138

Disease Activity in Ontario

Weekly case intensity by disease - Hover for details

Apr
May
Jun
Jul
Aug
Sep
Strangles
EHV-1 Neuro
WNV
EEE
EIA
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Strangles shows peak activity in fall (Oct-Dec) with 60% of cases occurring during this period.

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Equine Health Resources

Resource information for Ontario is not yet available. Please contact your state agriculture department for equine health resources.

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Recent Alerts in Ontario

Equine Infectious Anemiaofficial quarantine

Perth East

1 cases
Sep 22, 2026
West Nile Virusactive

Regional Municipality of Durham

Farm

1 cases
Sep 9, 2026
West Nile Virusactive

District of Parry Sound

Boarding Facility

1 cases
Aug 31, 2026
Stranglesvoluntary quarantine

Grey

Farm

1 cases
Aug 31, 2026
West Nile Virusactive

Simcoe

Farm

1 cases
Aug 6, 2026
Equine Herpesvirus-1 Neurologicvoluntary quarantine

Wellington

Boarding Facility

1 cases
Jul 9, 2026
Equine Herpesvirus-1 Neurologicvoluntary quarantine

Wellington

1 cases
Jul 2, 2026
Stranglesvoluntary quarantine

District of Temiskaming

Boarding Facility

3 cases
Jun 24, 2026
Equine Herpesvirus-1 Neurologicvoluntary quarantine

Simcoe

1 cases
Jun 9, 2026
Stranglesvoluntary quarantine

Grey

Farm

1 cases
May 12, 2026
Stranglesvoluntary quarantine

Simcoe

Boarding Facility

1 cases
Apr 23, 2026
Equine Herpesvirus-1 Neurologicvoluntary quarantine

Dufferin

Boarding Facility

1 cases
Apr 2, 2026
Stranglesvoluntary quarantine

Wellington

Training Facility

1 cases
Mar 19, 2026
Stranglesvoluntary quarantine

District of Cochrane

Farm

1 cases
Feb 17, 2026
Equine Herpesvirus-1 Neurologicvoluntary quarantine

Regional Municipality of York

Private Facility

1 cases
Feb 17, 2026
Stranglesvoluntary quarantine

Essex

Boarding Facility

1 cases
Feb 13, 2026
Stranglesvoluntary quarantine

Regional Municipality of Niagara

Private Facility

1 cases
Feb 9, 2026
Stranglesvoluntary quarantine

Dundas and Glengarry

Private Facility

1 cases
Feb 3, 2026
Stranglesvoluntary quarantine

Dufferin

Private Facility

1 cases
Feb 3, 2026
Stranglesvoluntary quarantine

Elgin

1 cases
Jan 7, 2026
Stranglesvoluntary quarantine

Regional Municipality of Durham

Boarding Facility

1 cases
Jan 7, 2026
Stranglesvoluntary quarantine

Elgin

Farm

1 cases
Jan 7, 2026
Stranglesvoluntary quarantine

Grey

1 cases
Jan 7, 2026
Stranglesvoluntary quarantine

Middlesex

Training Facility

7 cases
Jan 3, 2026
Stranglesvoluntary quarantine

Grey

Boarding Facility

1 cases
Dec 18, 2025
Stranglesvoluntary quarantine

Grey

Farm

1 cases
Dec 16, 2025
Stranglesvoluntary quarantine

District of Temiskaming

Boarding Facility

3 cases
Dec 15, 2025
Stranglesvoluntary quarantine

District of Sudbury

1 cases
Dec 15, 2025
Stranglesvoluntary quarantine

Regional Municipality of Waterloo

Farm

2 cases
Dec 15, 2025
Stranglesvoluntary quarantine

Middlesex

Training Facility

3 cases
Dec 10, 2025
Stranglesvoluntary quarantine

Wellington

Private Facility

1 cases
Nov 21, 2025
Equine Herpesvirus-1 Neurologicvoluntary quarantine

Regional Municipality of Waterloo

Boarding Facility

1 cases
Oct 30, 2025
Stranglesvoluntary quarantine

County of Peterborough

Boarding Facility

2 cases
Oct 23, 2025
West Nile Virusactive

Grey

Farm

1 cases
Oct 23, 2025
Stranglesvoluntary quarantine

District of Sudbury

Private Facility

1 cases
Oct 20, 2025
Stranglesvoluntary quarantine

Oxford

Private Facility

1 cases
Oct 20, 2025
West Nile Virusactive

Grey

Private Facility

1 cases
Oct 10, 2025
Stranglesvoluntary quarantine

Haldimand

Private Facility

1 cases
Oct 6, 2025
Eastern Equine Encephalitisactive

Simcoe

Private Facility

1 cases
Oct 6, 2025
West Nile Virusactive

District of Sudbury

Private Facility

1 cases
Sep 24, 2025
West Nile Virusactive

Regional Municipality of Peel

Farm

1 cases
Sep 22, 2025
Stranglesvoluntary quarantine

Regional Municipality of Waterloo

Farm

1 cases
Sep 22, 2025
West Nile Virusactive

District of Parry Sound

1 cases
Sep 9, 2025
West Nile Virusactive

Regional Municipality of Waterloo

Farm

1 cases
Sep 8, 2025
Equine Herpesvirus-1 Neurologicvoluntary quarantine

Regional Municipality of Halton

Farm

1 cases
Sep 5, 2025
Eastern Equine Encephalitisactive

Renfrew

Farm

1 cases
Sep 3, 2025
Eastern Equine Encephalitisactive

Regional Municipality of Halton

Farm

1 cases
Sep 3, 2025
West Nile Virusactive

District of Algoma

Farm

1 cases
Aug 29, 2025
West Nile Virusactive

Grey

Farm

1 cases
Aug 29, 2025
Stranglesvoluntary quarantine

District of Rainy River

Farm

1 cases
Aug 29, 2025

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