How did you or someone you know contract Legionnaires' disease? Please share your experience.
Share your story with others:
MedicineNet appreciates your comment. Your comment may be displayed on the site and will always be published anonymously.
What causes legionellosis? What is the history of Legionnaires' disease?
Legionellosis is an infection that is caused by the bacterium
Legionella pneumophila. The disease has two distinct forms:
Legionnaires' disease is the more severe form of the infection,
which may involve pneumonia. The onset of this form of the disease is usually two to 10 days after infection but can occur up to 16 days later. Legionnaires' disease acquired its name in 1976 after an outbreak of pneumonia occurred among people attending a convention of the American Legion in Philadelphia. Later, the bacterium causing the illness was named
Pontiac fever is a milder illness that develops from hours to
two days after initial infection and resolves spontaneously.
X-ray image of lungs of patient with Legionnaires' disease; SOURCE: CDC