Legionnaires’ disease, which is not directly contagious from person to person, is caused by bacteria that can multiply in water and air conditioning systems.
Spreading through contaminated droplets, the bug can cause fever and pneumonia, especially among people with weak immune systems.
The disease takes its name from the first known outbreak, which occurred in 1976 at a hotel in Philadelphia where the American Legion military veterans’ association was holding a conference.
More than 220 people fell ill, of whom 34 died.
“The Health Department has sampled and tested water from cooling towers in the investigation zone. Any cooling towers with initial positive results for Legionella bacteria have completed the treatment required by the Health Department,” New York’s health department said in its statement.
“This community outbreak is not related to a building’s hot or cold water supply.”
