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.

People usually develop symptoms of Legionnaires’ disease around two to 14 days after being exposed. People often get the disease by inhaling mist from contaminated water, but it is not spread from person to person. Symptoms include fever, muscle aches and coughing.

Health officials in New York City say an outbreak of Legionnaires’ disease in Central Harlem has grown to 90 cases, including three deaths.

The deadly Legionnaires’ outbreak gripping Harlem has city officials in hot water — as locals accused them Friday of dropping the ball on life-saving inspections and needlessly slow-walking revealing exactly where the disease hit.

City officials identified 12 cooling towers in 10 Harlem buildings that tested positive for Legionnaires' disease, including Harlem Hospital Center.