An Active Outbreak Is Spreading Through a Manhattan Neighborhood
An active Legionnaires' disease cluster is growing on Manhattan's Upper East Side, with 63 confirmed cases as of July 14, 2026, making it one of New York City's most significant Legionella clusters in recent years. The New York City Health Department is investigating the community cluster concentrated in Carnegie Hill and Yorkville, covering ZIP codes 10028, 10075, and 10128.