18 Legionella Cases Confirmed at Kaiser Permanente Santa Clara Medical Center
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By Ingrid Vasquez Published on May 8, 2026 12:13PM EDT
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Summary
An outbreak of Legionella bacteria has been confirmed at the Kaiser Permanente Santa Clara Medical Center in California, with 18 cases identified. The County of Santa Clara Public Health Department and Kaiser Permanente both confirmed the numbers, noting most affected patients are recovering at home. Legionellosis, caused by Legionella bacteria, can manifest as either Legionnaires' disease (a serious pneumonia) or Pontiac fever (a milder illness).
Key quotes
· 3 pulledThe County of Santa Clara Public Health Department told PEOPLE on Thursday, May 7, that 18 Legionella cases have been confirmed at the Kaiser Permanente Santa Clara Medical Center.
Kaiser Permanente also confirmed the number of patients to PEOPLE, noting that most are now recovering at home.
Legionellosis is the general term for infections caused by Legionella bacteria, according to the California Department of Public Health.
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