The outbreak has been traced to 12 cooling towers, including four city-run buildings, like Harlem Hospital, officials said.

Four people in New York City's Harlem neighbourhood have died from an outbreak of Legionnaires' disease, an aggressive and potentially deadly form of pneumonia.

“Why weren’t these cooling towers properly maintained? Who dropped the ball and why?” raged Nichole Ingram, who fell ill with Legionnaires’ disease around July 24 after she attended a funeral service...