New York City Department of Health and Mental Hygiene

A Legionnaires’ disease outbreak on New York City's Upper East Side has infected nearly two dozen people, raising concerns about enforcement of a new law requiring cooling tower testing. City officials report limited compliance with the law, which aims to curb Legionella spread through mandatory testing of cooling towers, a common source of outbreaks.

Two people on the Upper East Side have been diagnosed with Legionnaires’ Disease, prompting an investigation by the New York City Department of Health and Mental Hygiene. Health officials are examining a community cluster linked to the cases.