Toronto health officials probe Legionnaires' disease cluster in downtown area

An outbreak of Legionnaires' disease has been detected in downtown Toronto, with six confirmed cases among residents, employees and visitors within roughly a one-kilometre radius of Bathurst and Dupont Streets. Toronto Public Health announced that possible contamination sites have been pinpointed and precautionary measures are now in place, while local hospitals and health collaborators have been alerted to report any additional infections.

The bacterium, which thrives in water systems such as cooling towers and hot tubs, spreads through inhalation of contaminated droplets, not through person-to-person contact. Although the exact source has not been identified, officials are also examining whether the cluster is linked to a recent outbreak at the Castleview Wychwood Towers long-term care facility, which recorded five cases. Public health guidance emphasizes maintaining water heaters at a minimum of 60 °C and regular cleaning of mist-producing devices to reduce risk. Residents with symptoms are advised to consult healthcare providers for appropriate testing.