Strangles (Streptococcus equi) has been confirmed in Grey County, Ontario. On December 14, 2025, a four year old Quarter Horse gelding developed signs of "choke" due to swelling at the back of the throat from enlarged lymph nodes in that location. The horse tested positive for S. equi from a guttural pouch sample on December 17, 2025. The horse is recovering.
To see past and present Strangles cases in Ontario go to: https://www.oahn.ca/resources/ontario-equine-disease-alerts/ and enter the disease surveillance portal.