Researchers say two patients at a Canadian hospital likely contracted legionellosis from the facility’s contaminated hot water system.
An investigation launched after the patients were diagnosed showed a large percentage of water taps in two wings of the hospital were infected with Legionella pneumophila bacteria, as was the energy-conserving heat exchanger used to preheat hot water for one of the wings.
Testing of a sample from the hospital’s hot water system showed it may have been contaminated for 20 years.
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