Legionellosis outbreak in Calgary under investigation to find common source

Six reported cases of Legionellosis in Calgary have prompted an investigation to find a common source of exposure. Transmission of legionellosis (Legionnaires Disease) usually occurs following exposure to warm water aerosols since the bacteria are inhaled through water droplets in water sprays or mists. Exposure can occur in or around hot tubs or showers. In the summer, air conditioning systems in buildings with poorly maintained cooling towers are often a source of infection. Travellers who develop serious respiratory symptoms after being exposed to sources of water aerosols in various environments that generate sprays in the outbreak area should seek medical care as soon as possible.

Visit our Health Library for more information on exposure to and the prevention of Legionnaires' Disease.

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