Legionnaire disease

Legionella pneumonia; Pontiac fever; Legionellosis; Legionella pneumophila; Legionnaires' disease

Legionnaires disease is an infection of the lungs and airways. It is caused by Legionella bacteria.

Legionnaire disease - organism legionella

Legionnaire disease was first described in 1976 after an outbreak of fatal pneumonia at a Legionnaires convention. The newly described organism which caused the disease was named Legionella pneumophila, shown in this picture. (Image courtesy of the Centers for Disease Control and Prevention.)



Exams and Tests


Outlook (Prognosis)

When to Contact a Medical Professional