Legionnaires’ disease outbreak: Case count on Upper East Side increases to 59 as city investigates Upper West Side building for bacteria

A Legionnaires’ disease outbreak in Manhattan’s Upper East Side has reached 59 cases, with 15 hospitalized. While the city investigates the source, an unrelated Legionella detection in a Upper West Side building’s hot water system is not linked to the outbreak. Officials confirm tap water and air conditioning use remain safe, and a virtual town hall will update residents.