These bacteria spread through water systems and devices.
Information about a serious pneumonia caused by Legionella.
Information about a Legionnaires' disease cluster in New York City.
Healthcare providers
Information about Legionnaires' disease including cause, transmission, and risk factors.
Information on symptoms and complications of 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.
Information about a Legionnaires' disease cluster in New York City.
Homepage for CDC's information on investigating cases and outbreaks associated with Legionella.
Homepage for CDC's information on controlling Legionella to prevent Legionnaires' disease.