Overview
- Health officials reported 60 confirmed cases with 15 people hospitalized and no deaths as of Tuesday, July 14.
- Investigators PCR‑screened roughly 180 cooling towers in three UES ZIP codes and found Legionella DNA in 31 towers that were ordered drained, cleaned and disinfected; additional towers have been identified for cleaning.
- PCR screening detects bacterial DNA but cannot show whether bacteria are alive, so the health department is performing culture tests and planned whole‑genome sequencing that can take days to weeks to link environmental samples to patient strains.
- An Upper West Side building independently found Legionella in its hot‑water system but city officials say that finding is not related to the UES community cluster focused on cooling towers.
- The rapid public disclosures, virtual town halls and immediate remediation orders follow scrutiny after last summer’s deadly Harlem outbreak and are prompting new attention to tower testing, operator compliance and possible changes to prevention and enforcement practices.