Legionnaires' Disease Outbreak in NYC Claims Fourth Life

New York City health officials reported a fourth death linked to a Legionnaires' disease outbreak in Central Harlem, which began in late July. As of Thursday, 17 individuals had been hospitalized, with cases showing a decline, suggesting containment of the bacteria's sources.
The outbreak has been traced to cooling towers in 10 buildings, including a city-run hospital and sexual health clinic. Testing revealed the presence of Legionella bacteria in 12 cooling towers, with remediation completed on 11 towers. The final tower is scheduled for completion by Friday.
Legionnaires' disease, a severe form of pneumonia, is caused by Legionella bacteria, typically found in warm water systems like cooling towers, showerheads, and hot tubs. Infection occurs through inhalation of contaminated water droplets. Symptoms, which include cough, fever, headaches, and muscle aches, typically appear 2-14 days after exposure.
Michelle Morse, the city's acting health commissioner, urged residents in the affected area to seek medical attention if flu-like symptoms arise. Health officials emphasized the importance of timely diagnosis and antibiotic treatment to prevent complications such as respiratory failure or organ dysfunction.
Preventive measures include regular cleaning and disinfection of cooling towers, maintaining chlorine levels in pools, and flushing unused taps. Individuals can reduce risk by following maintenance guidelines for water systems and appliances.
The outbreak underscores the importance of proactive measures to prevent Legionnaires' disease and protect public health.

Published: 8/15/2025