Legionellosis (Legionnaires’ disease)

Reportable by Providers and laboratories

Infectious agent: Legionella bacteria, primarily Legionella pneumophila

Description of illness: Illness is classified as either Legionnaires’ disease or Pontiac fever. Symptoms of Legionnaires’ disease include cough, shortness of breath, fever, muscle aches and headache. Pontiac fever is milder than Legionnaires’ disease; primary symptoms are fever and muscle aches