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NYC Declares Harlem Legionnaires' Outbreak Over After Linking Cases to Two City Cooling Towers

Health officials outline stricter cooling‑tower oversight, including monthly testing with expanded inspections.

Overview

  • The Health Department closed its Central Harlem investigation after no new associated cases since Aug. 9, with 114 infections, seven deaths and six people still hospitalized.
  • Genetic sequencing matched patient samples to Legionella in cooling towers at Harlem Hospital and a nearby city‑leased construction site at 40 West 137th Street, both since disinfected.
  • Twelve cooling towers across ten buildings tested positive and were remediated by Aug. 15, with officials reporting many sites were behind on required testing or lacked recent inspections.
  • City leaders proposed reforms including 30‑day Legionella testing for cooling towers, expanded inspection staffing and higher fines to strengthen compliance and prevention.
  • Accountability efforts are mounting, with negligence lawsuits from construction workers and a call for an independent review of the city's response.