New York City is managing a community cluster of Legionnaires’ disease cases on the Upper East Side that officials believe is tied to bacteria found in cooling towers. Towers on 76 buildings on the Upper East Side have tested positive for the bacteria, the city’s Department of Health and Mental Hygiene said Tuesday.

Health officials say a Legionnaires’ disease outbreak in Manhattan’s Upper East Side now counts 60 cases, but new diagnoses are slowing.

New York City is managing a community cluster of Legionnaires’ disease cases on the Upper East Side that officials believe is tied to bacteria found in cooling towers. Towers on…