A fourth person has died in an outbreak of Legionnaires' disease in New York City, where 76 cases have been reported. The outbreak, which has been linked to cooling towers in Upper East Side buildings, has hospitalized 60 people, with 53 discharged and seven remaining in the hospital. City authorities have confirmed the deaths, with the first occurring on Friday, followed by two more over the weekend, and the fourth on Monday. The outbreak has raised concerns about the spread of the disease.
Legionnaires' disease is caused by the Legionella bacteria, which can infect a person's lungs and cause a severe form of pneumonia that can be fatal. However, most people exposed to the bacteria do not get sick, and infection can be effectively treated with antibiotics if diagnosed early. Symptoms of the disease typically develop two to fourteen days after exposure and include fever, chills, muscle aches, shortness of breath, and cough. Early diagnosis is crucial to prevent complications and fatalities.
The recent outbreak was discovered on July 2, and city officials quickly identified a series of cooling towers in 31 different buildings as the likely source. After testing 180 cooling towers, live or dead Legionella bacteria were found in 31 buildings. As a precautionary measure, the city has ordered the affected buildings to initiate a deep clean and disinfectant of their cooling towers. This includes the building that houses the Guggenheim Museum, located at 1071 Fifth Avenue.
City officials have cautioned residents that mask-wearing is unlikely to help prevent infection, as Legionella bacteria are not transmissible from person to person. Instead, community cluster outbreaks like the one on the Upper East Side usually stem from common sources of exposure, such as cooling towers, hot tubs, and spray fountains. Public testing of the bacterium is ongoing, and the city is working to contain the outbreak and prevent further cases.
The city's last major Legionnaires' outbreak occurred in August 2025, when over 100 people in Harlem got sick and seven died. The current outbreak has raised concerns about the need for regular maintenance and testing of cooling towers to prevent the growth of Legionella bacteria. The city is taking steps to address the issue and prevent future outbreaks, and residents are advised to be aware of the symptoms and seek medical attention if they suspect they have been exposed to the disease.
