Residents of the South Bronx are pressing city officials for clearer answers as health authorities continue investigating a Legionnaires’ disease outbreak centered in the Melrose and Morrisania neighborhoods.
Concerns intensified after preliminary testing detected Legionella bacteria in 10 cooling towers across the affected area, including one at Yankee Stadium. The cooling systems were ordered to be drained, cleaned and disinfected as officials worked to identify the source of the infections.
At least 10 people have been diagnosed in the cluster, including one person who died and three patients who required hospitalization.
Health officials cautioned that the detection of Legionella DNA does not necessarily mean the bacteria were alive or that any particular cooling tower caused the outbreak. Additional laboratory testing is underway and may take up to two weeks to produce conclusive results.
The New York Yankees said no reported cases had been connected to Yankee Stadium. The organization stated that its cooling towers were installed in 2024 and undergo regular water-quality testing.
During a community meeting, Bronx residents questioned officials about the speed of the response, compliance with cooling-tower maintenance rules and why the source of the outbreak had not yet been identified. Some called for greater transparency regarding test results and any violations discovered during inspections.
Legionnaires’ disease is a serious form of pneumonia contracted by inhaling mist containing Legionella bacteria. It is not generally transmitted between people. Adults over 50, smokers and those with chronic lung conditions or weakened immune systems face a greater risk of severe illness.
Authorities advised anyone who has lived, worked or visited the affected areas since late August to seek medical attention if they experience fever, coughing or difficulty breathing. Early diagnosis is important because the disease can usually be treated effectively with antibiotics.
Officials said tap water, showers and household air-conditioning systems remain safe to use while the investigation continues.

