It has been three years since Legionnaires’ disease made national headlines following an outbreak surrounding the cooling tower of the Opera House Hotel in the South Bronx. Legionnaires’ disease is a serious type of pneumonia caused by the waterborne pathogen known as Legionella. It is contracted when susceptible individuals inhale water droplets or mist containing elevated levels of legionella bacteria. New York City has as many as 1,200 towers with evaporative heat exchangers, usually installed on the top of a building as part of …
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