Overview
- The cluster has sickened about 60–63 people with many requiring hospital care and no reported deaths, and city officials say new diagnoses have slowed in recent days.
- Health teams PCR‑screened roughly 183 cooling towers in three Upper East Side ZIP codes and found Legionella genetic material at 76 buildings, triggering orders to drain, clean and disinfect those systems.
- As of mid‑July, owners of 57 positive towers have reported completing remediation and the remaining 19 were ordered to finish by Thursday.
- PCR testing detects bacterial DNA quickly but cannot show whether bacteria are alive, so the Department of Health is running culture and whole‑genome tests that can take up to two weeks to confirm infectious sources and link patient samples.
- The city’s aggressive move to publish addresses and demand immediate cleanings has drawn praise for transparency and criticism from local leaders who want broader proactive disinfection and stricter enforcement of mandatory monthly testing instituted after last summer’s Harlem outbreak.