The Legionnaires’ disease outbreak on Manhattan’s Upper East Side now includes 14 confirmed cases, as reported by New York City health officials. These cases are concentrated in ZIP codes 10028, 10128, and 10075, covering areas like Yorkville and Carnegie Hill. One patient had recently been in the 10075 area.
Health officials urge individuals who spent time near the east side of Central Park between East 76th Street and East 97th Street to be alert for flu-like symptoms such as fever, cough, chills, and muscle aches.
Legionnaires’ Disease Overview
Legionnaires’ disease, a severe pneumonia caused by Legionella bacteria, spreads through inhaling contaminated water droplets. This illness can be fatal without prompt treatment.
“I want to acknowledge the NYC Health Department’s staff of epidemiologists, water ecologists, community health workers, and many more who spent the last few days working to keep New Yorkers on the Upper East Side informed and safe,” stated NYC Health Commissioner Dr. Alister F. Martin.
Investigation and Response
The source remains under investigation, with officials examining cooling towers in the area as a potential origin. Cooling towers on rooftops can emit mist carrying Legionella bacteria. Testing is ongoing for all towers in the affected region.
The cluster was initially identified on Thursday, with only two confirmed cases. The investigation area expanded as more cases emerged.
Community Safety Measures
According to New York City Mayor Zohran Mamdani, the outbreak does not involve building plumbing or indoor AC units, so residents can safely use tap water and air conditioning.
Updates will continue as more information becomes available. The community is advised to seek medical attention if experiencing flu-like symptoms after visiting the affected areas since late June.
Last summer, Central Harlem experienced a Legionnaires’ disease outbreak with more than 100 confirmed cases.
Sophia Compton, a Writer at Fox News Digital, has a background in business reporting and TV news production. She graduated from the University of Hawaii at Manoa in 2021 with a journalism degree.

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