New York City health officials have confirmed a seventh death tied to the Legionnaires� disease outbreak in Central Harlem, where 114 people have been diagnosed and six remain hospitalized. The cluster has been traced to 12 contaminated cooling towers across 10 buildings, including a city-run hospital and health clinic, though all have since undergone remediation. Legionnaires� disease, a severe form of pneumonia caused by Legionella bacteria that spread through building water systems, can trigger cough, fever, muscle aches and shortness of breath within two days to two weeks�of�exposure.