Legionnaires’ disease outbreak: Heatwave sparks new concerns of spread as cases in Upper East Side cluster increase to 63

A Legionnaires’ disease outbreak in NYC's Upper East Side has increased to 63 cases, with 12 hospitalized. Health officials warn that the ongoing heatwave may worsen conditions as Legionella bacteria thrive in warm water, though no deaths have been reported. Cooling towers in 31 buildings tested positive for Legionella and have been disinfected, while a separate case at The Ardsley building is deemed unrelated.