What are the mortality rates for Legionella infection?

Updated: Nov 13, 2018
  • Author: Mobeen H Rathore, MD, CPE, FAAP, FIDSA; Chief Editor: Russell W Steele, MD  more...
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The mortality rate in patients with Legionnaires disease is 5-80%, depending on certain risk factors. The factors associated with high mortality rates include the following:

  • Age (especially those younger than 1 y and elderly patients)

  • Predisposing underlying conditions, such as chronic lung disease, immunodeficiency, malignancies, end-stage renal disease, and diabetes mellitus

  • Nosocomial acquisition

  • Delayed initiation of specific antimicrobial therapy

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