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Strangles (Streptococcus equi) in Ontario, January 16, 2025

Ontario Ministry of Agriculture, Food and Agribusiness (OMAFA)
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Strangles (Streptococcus equi) has been confirmed in Essex County, Ontario. Three senior horses were noted to be mildly off feed the week of January 6, 2025. One of the horses developed an abscess under the jaw on January 12, 2025. All three horses have tested positive for S. equi by PCR. All affected horses have been isolated in a barn on the property. The facility owner is working with their veterinarian on voluntary animal movement restrictions and biosecurity.