A fifth person has succumbed to a deadly vapor that has crept up on New York City. Legionnaires’ disease, a kind of pneumonia that spreads from toxic water vapor, has also infected 108 people since the outbreak began at the end of July, according to the New York City Health Department on Monday.

A Legionnaires' disease outbreak in New York's Central Harlem has now caused four deaths and sickened 101 people, New York City health officials confirmed.