Overview
- City health officials reported Tuesday that the outbreak has produced about 82 confirmed Legionnaires’ cases and five deaths and that no new symptomatic patients have been reported in several days.
- Confirmatory culture tests returned positive for live Legionella in 34 rooftop cooling towers at 33 Upper East Side buildings and city teams have drained, cleaned and disinfected those systems.
- Investigators used rapid PCR screening followed by slower culture and whole‑genome sequencing to confirm live bacteria and to try to link strains to patients, and those laboratory analyses and record reviews are ongoing.
- City Council leaders have criticized the Health Department’s timing and communication and have scheduled a September oversight hearing plus proposals for a Legionnaires’ hotline and tougher owner notification and enforcement rules.
- The cluster highlights how Legionella grows in warm, stagnant water inside cooling towers that spray fine droplets into the air and follows tighter testing rules and extra inspector hires after last year’s deadly Harlem outbreak.