The New York City Department of Health has confirmed that 58 people have been diagnosed with Legionnaires’ disease in Central Harlem and nearby neighborhoods since July 25, 2025. Three people have died. The outbreak is centered in ZIP codes 10027, 10030, 10035, 10037, and 10039.

On July 30, health officials initially reported 22 cases and one death. As of August 4, that number has more than doubled. The city says remediation is complete at 11 cooling towers that tested positive for Legionella pneumophila, the bacteria that causes Legionnaires’ disease.

The illness is a form of pneumonia that spreads by inhaling water vapor containing the bacteria, often from sources like cooling towers, plumbing systems, or showerheads.

“Anyone in these zip codes with flu-like symptoms should contact a

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