Legionella (Legionnaires' Disease and Pontiac Fever)

What is Legionnaires’ disease?

Legionnaires’ (LEE-juh-nares) disease is a serious type of pneumonia (lung infection) caused by Legionella (LEE-juh-nell-a) bacteria. People can get sick when they breathe in mist or accidently swallow water into the lungs containing Legionella.

Legionnaires' Disease Prevention

Hotels and Resorts

Learn steps you can take to Prevent Legionnaires’ Disease

Public Health Grand Rounds

Public Health Grand Rounds

Watch and earn CEs as you learn more about water management programs

Water Management Program Resources

Water Management Program Resources

Find toolkit, fact sheets, training, and more water management program resources

Environmental Investigation Videos

Environmental Investigation Videos

Watch six instructional videos on Legionnaires’ disease outbreak investigations