These bacteria spread through water systems and devices.
Information about a serious pneumonia caused by Legionella.
Information on a less severe infection caused by Legionella.
Healthcare providers
Information about Legionnaires' disease including cause, transmission, and risk factors.
Symptoms and complications information for Legionnaires' disease and Pontiac fever.
Guidance on testing indications, collecting an exposure history, preferred tests, and treatment.
Public health professionals
Culture and Legionella urinary antigen testing are recommended for Legionnaires' disease diagnosis.
Legionnaires' disease surveillance, including reporting trends.