Legionnaires’ Disease Outbreak Status Update – July 14, 2025 - Middlesex-London Health Unit

TTC cooling tower identified as source of legionnaires’ outbreak TTC cooling tower identified as source of legionnaires’ outbreak – Aug 26, 2026

TorontoAfter investigating six confirmed cases in the city earlier this month, Toronto's public health agency says it's confirmed the outbreak's source is a cooling tower on a TTC complex. Public health agency says samples collected from cooling tower matched sample from confirmed caseListen to this articleEstimated 3 minutesThe audio version of this article is generated by AI-based technology. Mispronunciations can occur. We are working with our partners to continually review and improve the results. A 2009 micrograph image of a large grouping of Gram-negative Legionella pneumophila bacteria. Toronto's public health agency confirms there were no deaths from six legionnaires' disease cases earlier this year. (Janice Haney Carr/The Canadian Press)A cooling tower at the Toronto Transit Commission’s (TTC) Hillcrest Complex is the source of a recent legionnaires' disease outbreak in the city, according to Toronto Public Health (TPH). The environmental samples collected from the cooling tower matched a clinical sample from a confirmed case of the disease, a health official said in a TPH news release Tuesday.

Outbreaks of Legionnaires’ disease are not very common, infectious diseases specialist Dr. Isaac Bogoch told CityNews on Tuesday, but even more uncommon is an entire intersection being flagged as a hotspot for possible exposure. On Monday, Toronto Public Health (TPH) issued a release saying there have been six confirmed cases among people who either live, work, or have visited an approximately one-kilometre radius of the intersection of Bathurst and Dupont streets.

ADVERTISEMENTVideoSix individuals within a one-kilometre radius of the Bathurst and Dupont area have contracted Legionnaires’ Disease. Public health officials are investigating. August 17, 2026 at 12:21p.m. EDT

TorontoPublic health officials in Toronto say they are investigating another outbreak of legionnaires' disease. They say the outbreak of six confirmed cases spans about a one-kilometre radius of the intersection of Bathurst and Dupont streets.6 cases confirmed within 1-km radius of the intersection of Bathurst and Dupont streetsMaan Alhmidi · The Canadian Press · Posted: Aug 17, 2026 11:48 AM EDT | Last Updated: August 17Listen to this articleEstimated 1 minuteThe audio version of this article is generated by AI-based technology. Mispronunciations can occur. We are working with our partners to continually review and improve the results. Toronto Public Health confirms 6 cases of legionnaires' disease in Bathurst, Dupont areaAugust 17|Duration 2:41Public health officials in Toronto say they are investigating another outbreak of legionnaires' disease, with six confirmed cases spanning about a one-kilometre radius of the intersection of Bathurst and Dupont streets. CBC’s Kelda Yuen asked infectious diseases specialist Dr. Isaac Bogoch to break down what you need to know. Public health officials in Toronto say they are investigating another outbreak of legionnaires' disease.