What are the risk factors for Legionella infection in adults?

Updated: Nov 13, 2018
  • Author: Mobeen H Rathore, MD, CPE, FAAP, FIDSA; Chief Editor: Russell W Steele, MD  more...
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Answer

In adults, recognized risk factors for legionellosis include the following:

  • Cigarette smoking

  • Alcoholism

  • Chronic lung disease

  • Chronic heart disease

  • Immunosuppression (eg, malignancies, immunosuppressive therapy such as corticosteroids, human immunodeficiency virus [HIV], acquired immunodeficiency syndrome [AIDS])

  • End-stage renal disease

  • Diabetes mellitus

  • Advanced age

Surgery, especially for head and neck malignancies and for solid organ transplantations, predisposes patients to nosocomial infections.


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