Overview
- City officials reported on July 18 that the cluster has sickened 72 people, left two dead, nine hospitalized, and resulted in 50 discharges.
- Health teams PCR‑screened roughly 180–200 rooftop cooling towers and found Legionella DNA in 76 systems, which were ordered drained, cleaned, and disinfected.
- All 76 buildings completed required remediation by about July 16 and reported new case counts fell from an average of more than eight per day early in the month to fewer than one per day between July 10 and July 17.
- Laboratory culture and whole‑genome sequencing are still underway to confirm whether any towers contained live bacteria and to genetically link environmental samples to patient infections.
- Officials said plumbing and tap water are not the source, they will continue inspections and enforcement of tower rules, and they reminded residents to seek care for pneumonia‑like symptoms.