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Legionella outbreaks linked to cooling towers

Updated 5 times since CLSTR started tracking revisions of this situation.

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2026-08-05 11:03 UTC → 2026-08-14 22:34 UTC · added removed

In late July 2026 New York City reported 90 City, a Legionnaires’ disease cases and six deaths; identified cooling towers were cleaned outbreak centered in the Carnegie Hill and Yorkville neighborhoods of the Upper East Side has concluded. While the outbreak was officially declared over on July 31 following a period with no new cases have appeared since mid‑July. diagnoses, the final death toll reached nine people. The investigation, which covered 183 cooling towers across 160 buildings, confirmed that 59 towers contained live bacteria. Although officials stated, “We are confident the source of the Legionella bacteria has been eliminated,” the investigation highlighted widespread compliance issues. In total, the Manhattan cluster resulted in 92 diagnosed cases. In Basel, Switzerland, the an outbreak reached 26 infections and one fatality, with seven patients requiring intensive‑care treatment. Investigators identified linked to a water‑cooled water-cooled cooling tower on Rebgasse in the Kleinbasel district as the most likely source. resulted in 26 infections and one fatality. Seven patients required intensive care. Testing of ten nearby towers found eight exceeding exceeded legal Legionella limits, and with two towers on the same office building roof showed especially showing particularly high bacterial counts. All implicated Implicated units have been shut down and ordered decontaminated, for decontamination, and broader inspections of urban cooling‑tower installations are underway. Health officials authorities continue to advise inspect urban cooling-tower installations while advising anyone with respiratory symptoms to seek medical attention.

Versions

  1. 2026-08-14 22:34 UTC Legionella outbreaks linked to cooling towers
  2. 2026-08-05 11:03 UTC Legionella outbreaks linked to cooling towers
  3. 2026-08-05 01:49 UTC Legionella outbreaks linked to cooling towers
  4. 2026-08-04 17:45 UTC Legionella outbreaks linked to cooling towers
  5. 2026-08-03 19:47 UTC Legionella outbreaks linked to cooling towers
  6. 2026-08-03 14:10 UTC Legionella outbreaks linked to cooling towers

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