UW Medicine identifies a case of Legionella pneumonia
A patient treated at UW Medical Center-Montlake in September was diagnosed with Legionella pneumonia, believed to be a healthcare-related infection. The diagnosis was made after the patient was transferred to another facility for further care. This is believed to be an isolated case and no other cases of Legionella have been identified at UW Medical Center – Montlake at this time. We are working closely with Public Health – Seattle & King County and the Washington State Department of Health to investigate this case and ensure patient safety...

UW Medicine identifies a case of Legionella pneumonia
A patient treated at UW Medical Center-Montlake in September was diagnosed with Legionella pneumonia, believed to be a healthcare-related infection. The diagnosis was made after the patient was transferred to another facility for further care. This is believed to be an isolated case and no other cases of Legionella have been identified at UW Medical Center – Montlake at this time. We are working closely with Public Health – Seattle & King County and the Washington State Department of Health to investigate this case and ensure the safety of patients and staff.
UW Medical Center has a robust water management plan that includes testing and monitoring water temperature, chlorine levels and the presence of water-borne bacteria.
We do not know the source of the patient’s infection in this particular case and may never know the source.”
Matt Hanson, Deputy Public Health – Seattle and King County Communicable Disease Program
However, a case of Legionnaires' disease with a continuous stay of 10 or more days in a health facility within 14 days before the onset of symptoms is considered a presumptive healthcare-associated Legionnaires' disease infection. We are working closely with UW Medical Center on this case investigation. You have a solid Legionella prevention and response plan in place and are taking all recommended steps.
"Legionella is a common bacteria found in water, and most healthy people exposed to Legionella do not become ill. People at increased risk of illness include cigarette smokers and people with certain underlying medical conditions, including chronic lung disease or weakened immune systems," Hanson said.
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