First recognized in 1976 when an outbreak of a respiratory disease occurred among many delegates of the American Legion members attending a convention in Philadelphia.
182 people contracted pulmonary disease and 29 died.
Small, thin microbe (2-10 micrometers in length).
Cell wall-high lipopolysaccharide content.
Gram negative aerobic rod (bacillus).
An acute respiratory infection caused by the bacterium Legionella pneumophilia,