About the Disease

Español: Sobre la enfermedad

Legionella bacteria can cause a serious type of pneumonia (lung infection) called Legionnaires’ disease. The bacteria can also cause a less serious illness called Pontiac fever.

Legionnaires’ Disease Fact Sheet [1 page]
This fact sheet describes what Legionnaires’ disease is, its symptoms, how it’s spread and treated, and who is at increased risk.