Disease alerts - Strangles (Streptococcus equi) in Ontario, July 2, 2025 - Strangles (Streptococcus equi) in Ontario, July 2, 2025 - Strangles (Streptococcus equi) in Ontario, July 2, 2025

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Regulatory Category- Federal:

Not regulated

Regulatory Category- Province or Territory:

Immediately Notifiable

Animal Type:

Equine

Susceptible Animal Types:

Equine

Animal Class:

Terrestrial

Disease Agent:

Strangles (Streptococcus equi)

Disease Agent Type:

Bacteria

Organization:

Ontario Ministry of Agriculture, Food, and Rural Affairs (OMAFRA)

Region:

Ontario

Event Size:

1 individual

Problem(s):

Respiratory signs;
Skin/mucous membrane lesions

Topics:

Endemic

Start Date

Jul/02/2025

End Date

Jul/02/2025

Website

Equine Disease Communication Center

Strangles (Streptococcus equi) in Ontario, July 2, 2025

Ontario Ministry of Agriculture, Food and Agribusiness (OMAFA)

Strangles (Streptococcus equi) has been confirmed in Grey County, Ontario. A 12 year old Paint gelding developed classic signs of Strangles on June 23, 2025, two weeks after being purchased from someone who buys and sells horses as their occupation. The horse also stopped over at a sales barn in the Regional Municipality of Waterloo for 48 hours prior to arriving at its new location. Testing was positive for S. equi by PCR. Two additional horses were exposed. The farm owner, working with their veterinarian, has instituted voluntary animal movement restrictions and biosecurity protocols.