Legionellosis (Legionella):
Legionnaires' Disease and Pontiac Fever

Legionellosis includes two diseases, Legionnaires’ disease and Pontiac fever, caused by exposure to the Legionella bacteria, Legionella pneumophila.  Legionnaires' disease causes pneumonia and was named after a deadly outbreak of pneumonia in 1976 among people attending a convention of the American Legion.

Pontiac fever is a mild form of Legionnaires’ disease that causes only flu-like illness.

• About Legionnaires’ Disease
  Fact sheet that answers some commonly asked questions about Legionnaires' disease.
  
  
• About Pontiac Fever
  Fact sheet that answers some commonly asked questions about Pontiac fever.
  
  
• Primary Prevention of Legionella Infections
  More about primary prevention, persons at increased risk, and common sources of Legionnaires' disease.
  
  
• Legionnaires' Disease Statistics
  Statistics for Legionnaires’ disease in Minnesota.
  
  
• For Hot Tub Owners and Operators
  Information about how to minimize the risk for Legionella exposure from hot tubs.
  
  
• For Health Professionals
  Guidelines and reporting information.
  
  
• More about Legionella: CDC: Legionella (Legionnaires' Disease and Pontiac Fever)