Legionella pneumonia

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Pneumonia Microchapters
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Overview
Historical Perspective
Classification
Pathophysiology
Causes
Differentiating Pneumonia from other Diseases
Epidemiology and Demographics
Risk Factors
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Overview

Legionella is a common cause of both health care associated pneumonia, and community acquired pneumonia.

Historical perspective

• The organism was first recognized in 1976 during an outbreak at an American Legion Convention in Philadelphia.

Clinical types

Legionellosis comprises of two clinical syndromes caused by Legionella:

• Legionnaires' disease is the pneumonia caused by Legionella.
• Pontiac fever is an acute, febrile, self-limited illness caused by Legionella.