A Legionnaires Disease outbreak in Manhattan's Upper East Side has prompted a public health investigation after 18 cases were confirmed in late June and early July, with New York City officials linking the cluster to a contaminated cooling tower rather than residential water systems.
Legionnaires Disease is not new to dense urban environments like New York, where past outbreaks have often been traced to building water systems. The latest cluster, centred on Carnegie Hill and Yorkville, has drawn attention because of how quickly case numbers rose within a defined area, covering ZIP codes 10028, 10128 and 10075.
