New York City health officials have confirmed a fourth fatality in the ongoing Legionnaires’ disease outbreak centered in Central Harlem. The outbreak, which began in late July, has seen 99 cases of New Yorkers fall ill, with 17 currently hospitalized. Signs indicate the spread of new cases may be receding.
Investigators have traced the Legionnaires’ disease outbreak to 12 contaminated cooling towers across 10 Harlem buildings, including city-run facilities such as Harlem Hospital, the Central Harlem Sexual Health Clinic, and CUNY’s Marshak Science Building. Eleven of these towers have been remediated; the remaining one is slated for cleanup by Friday.
Legionnaires’ disease is a serious form of pneumonia caused by Legionella bacteria, which spreads through inhalation of contaminated water mist—commonly from cooling towers, plumbing systems, or air conditioning units. It does not spread from person to person. Symptoms typically include cough, fever, headache, muscle aches, and shortness of breath, appearing between two days and two weeks after exposure.
Acting Health Commissioner Dr. Michelle Morse noted that the decline in new cases of Legionnaires’ disease signals that the sources of contamination are being brought under control. However, officials continue urging residents and workers in the affected ZIP codes—10027, 10030, 10035, 10037, and 10039—to seek immediate medical care if flu-like symptoms arise.
Mayor Eric Adams reassured New Yorkers that “the air is safe to breathe,” emphasizing that the city’s aggressive response has helped slow the spread of Legionnaires’ disease.
As remediation efforts proceed, authorities remain vigilant. Residents in Central Harlem are encouraged to stay informed, remain alert for symptoms of Legionnaires’ disease, and consult healthcare providers promptly if concerns arise.
