Rise in Legionnaires' Disease Cases in New York City: 90 Confirmed Infections and 15 Hospitalizations

The New York City Department of Health has reported a significant outbreak of Legionnaires' disease in central Harlem, with the number of confirmed cases rising to 90. Of these, 15 individuals are currently hospitalized battling symptoms of the bacterial pneumonia. Tragically, three deaths have been linked to this outbreak, affecting several zip codes including 10027, 10030, 10035, 10037, and 10039. Residents and workers in the affected areas are urged to seek medical attention immediately if they experience flu-like symptoms, such as cough, fever, chills, muscle aches, or shortness of breath.

The health department previously identified 81 cases and has emphasized that the three fatalities have not been publicly identified. Legionnaires' disease is caused by Legionella bacteria, which flourish in water systems like cooling towers, hot tubs, and plumbing systems. Although investigations have identified 11 suspicious cooling towers, all have now been remediated, and the water in plumbing and drinking sources remains safe.

Experts highlight that older adults, especially those over 50, smokers, individuals with lung disease, or those with weakened immune systems, are more vulnerable to severe disease. The department continues to monitor the situation closely and is working with building owners to ensure additional treatment if necessary.

Legionnaires' disease is not contagious from person to person; it occurs when individuals inhale aerosolized water containing Legionella bacteria. It often presents as pneumonia and requires prompt antibiotic treatment. The city remains vigilant and committed to controlling the outbreak.

Source: https://medicalxpress.com/news/2025-08-york-city-legionnaires-disease-outbreak-1.html