New city data suggests the outbreak of Legionnaires’ disease in Central Harlem may be waning, although city health officials say it’s too soon to say definitively whether it has passed its peak. “We’re trending downwards and happy to see that trend,

An outbreak of Legionnaires’ disease in New York City has killed three people and sickened more than six dozen since late July. This type of pneumonia is caused by the bacteria Legionella, which grows in warm water.

Legionnaires' disease is caused by Legionella, a bacteria that can travel through water systems and devices. Although most healthy people don't contract it, it can be deadly for those who do.