A fourth person has died in connection with a Legionnaires’ disease outbreak in New York City. Health officials disclosed the latest death Thursday as they revealed that some cooling towers tested positive for the bacteria in some city-run buildings.

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. The city has seen 99 confirmed cases with 17 people in hospital with the infection, according to the New York City Department of Health.

Amid the outbreak of a severe type of pneumonia caused by a bacterium called Legionella in New York City, a fourth fatality was confirmed on Thursday. According to reports, the Legionella bacteria were found in 12 cooling towers on 10 buildings,