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Toronto Public Health Investigating Legionnaires’ Disease Outbreak After 9 Confirmed Cases
Toronto Public Health says the infections appear linked and the risk to the public is low, with no source identified.
Toronto Public Health officials are investigating an outbreak of Legionnaires' disease after confirming nine cases in the city's southeast area, with the source still unidentified.
Legionella bacteria, found in natural water sources and poorly maintained systems like cooling towers and hot tubs, spreads through contaminated water droplets rather than person-to-person contact.
TPH is inspecting the affected area and collecting samples from potential sources while collaborating with provincial and federal partners; the health unit says the public risk remains low.
A 2005 incident at the Seven Oaks long-term care facility infected 135 people, while a London, Ont., outbreak last summer sickened at least 94 people, providing historical context.
Symptoms including fever, cough, and muscle aches can appear within two weeks of exposure, with Older adults and smokers at higher risk for severe illness requiring antibiotic treatment.