First death reported from Legionnaires' outbreak on Upper East Side, Health Dept. says
Jul 17, 2026
Health officials have reported the first death in connection with the outbreak of Legionnaires’ disease in a Manhattan neighborhood.
New York City Health Commissioner Dr. Alister Martin confirmed one person had died as a result of the cluster found on the Upper East Side.
“I am saddened to
report that one person has died in connection with the Legionnaires’ disease community cluster on the Upper East Side. My deepest condolences are with their loved ones, and out of respect to their personal privacy, we will not be releasing any additional information on the individual,” Martin said in a statement.
As of Thursday night, 67 people had been diagnosed with Legionnaires’ disease as a result of the outbreak, a dozen of whom were still hospitalized. Nearly 50 people had required hospitalization after falling ill.
Earlier in the week, city health officials said new diagnoses had been slowing. The city’s Department of Health and Mental Hygiene reported progress on inspections for the disease-causing bacteria, finding traces in dozens of buildings including the famed Metropolitan Museum of Art and the Guggenheim Museum.
City Council Speaker Julie Menin, a Democrat and Upper East Side resident, complained that the Health Department wasn’t doing and disclosing enough. Menin said Wednesday she planned to hold a Council hearing to examine the city’s handling of the outbreak and “demand accountability.”
Legionnaires’ disease is a form of pneumonia caused by Legionella bacteria, which grow in warm water and can spread in building cooling systems, hot tubs and showerheads. In many cases, people contract the disease by inhaling tiny droplets of contaminated water; Legionnaires’ disease doesn’t spread person-to-person.
The illness is treatable, but it is fatal in about 10% of cases, according to the U.S. Centers for Disease Control and Prevention. Seven people died and more than 100 were sickened during an outbreak last year in Harlem. The sources turned out to include cooling towers — devices sometimes used for cooling large buildings — at a city-run hospital and the site of the city’s public health lab.
Health officials are working to identify the origin of the Upper East Side outbreak, which was first identified on July 2 from two cases in close proximity. The investigation expanded to encompass three heavily residential ZIP codes.
The city said Tuesday it has inspected all 183 cooling towers in the area, and about 75 of them came up positive on first-round tests that don’t distinguish between live and dead bacteria.
Those buildings include the Met Museum, according to a list the city released Tuesday. The storied museum said it was working on the required cleanup and follow-up testing. It’s normally closed Wednesday and canceled the day’s few activities to ease the cleaning.
City officials said last week that they got positive tests at the Guggenheim Museum, private schools, Park and Fifth Avenue apartment houses, and more.
Most already finished the required cleanups, which entail draining and disinfecting the cooling towers, Martin said. The remaining buildings were supposed to be completed by Thursday.
Martin said the city acted with unprecedented speed in ordering cooling tower cleanups after the first-round tests. In the past, he said, officials awaited results from second-round tests for live bacteria. Those tests take about two weeks.
Menin, the Council speaker, contends the city should have demanded cleanups throughout the area right away, without waiting for any tests.
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