Legionella case suspected in a Hospital

Legionella case suspected in a Hospital

Picture of UW medicine article

Seattle Cancer Care Alliance (SCCA) and UW Medicine reported a probable Legionella outbreak. This is believed to be an isolated case, Legionella bacteria is not transmitted from person to person. The center have notified people who were on the areas concerned. Many analysis will identify possible source for this exposure.


In response, UW Medical Center installed special filters on all showers and sinks in the inpatient rooms. A robust water management plan was also developed that includes testing and monitoring of water temperature, chlorine levels and presence of Legionella.



According to the CDC (Center of Disease Control), 6,000 people are hospitalized in the U.S with Legionnaires’ disease.


  1. Call professionals to control your water with microbiological analysis (Suppose that all potential sources of contamination are contaminated and treat them accordingly. This includes hot and cold water)
  2. If Legionella positivity above acceptable levels is determined by environmental culturing, installation of Pointof-Use filters are the most immediately effective response.
  3. Prevent residents, patients, employees, visitors from inhaling or drinking any water from you facility’s water systems until the source of the legionella bacteria has been identified.
  4. Follow you Water management plan.


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