After Seven Deaths, NYC Declares Legionnaires’ Outbreak Over

Under a magnification Legionella pneumophila bacteria that leads to Legionnaires' disease.

Photographer: Smith Collection/Gado/Getty Images

New York City closed its investigation into a Legionnaires’ outbreak on Friday and announced more stringent testing requirements, after the disease sickened 114 people and caused seven deaths.

The Health Department said the last day someone reported symptoms from the disease was Aug. 9, leaving three weeks of no new person with symptoms. The outbreak stemmed from the legionnella bacteria growing in multiple water cooling towers in the Central Harlem neighborhood of Manhattan.