Upper East Side buildings, including the Met and Guggenheim museums, have cleaned and disinfected their cooling towers, which are believed to be the source of the outbreak.The Solomon R. Guggenheim Museum in New York City.Kevin Hagen / Getty Images fileJuly 19, 2026, 12:11 PM EDTA second person has died of Legionnaires’ disease in connection with an outbreak on New York City’s Upper East Side that has sickened 72 people and prompted cleanup efforts at the world-famous Metropolitan Museum of Art and Guggenheim Museum.Just a moment.We are getting your experience ready.