Legionnaire disease

Legionella pneumonia; Pontiac fever; Legionellosis

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

Legionnaires' disease organism, legionella

Legionnaire's 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.)

Causes

Symptoms

Exams and Tests

Treatment

Outlook (Prognosis)

When to Contact a Medical Professional