Rainwater left untreated in cooling towers atop city-owned Harlem Hospital fueled the Big Apple’s deadliest Legionnaire’s disease outbreak in a decade, the Rev. Al Sharpton charged Tuesday.

A fifth person has died in connection with a Legionnaires’ disease outbreak in New York City. The outbreak in Central Harlem has sickened dozens since it began in late July and the latest death was announced Monday night.

Cases of Legionnaires' disease are on the rise in New York City, with three death reported. Have there been cases of the disease in Louisiana?

Stay informed about rising Legionnaires’ disease cases. Find out who’s at risk and how infections are treated.