MEDICAL DICTIONARY
Legionella: The bacterium that causes Legionnaires' disease. This disease is due specifically to the bacterium Legionella pneumophila found in plumbing, shower heads and water-storage tanks. Outbreaks of Legionella pneumonia have been attributed to evaporative condensers and cooling towers. The bacterium thrives in the mist sprayed from air-conditioning ducts and so it can infest an entire building or airplane. Travelers are especially vulnerable in the closed space within a plane.
Legionnaires' disease can cause a massive pneumonia associated with collapse of the respiratory function. It can be an overwhelming and sometimes fatal illness.
The disease was first identified as a sequel of the 1976 convention of the American Legion in some of the Legionnaires who had attended the convention. It was therefore named Legionnaires' disease.
The distinguished surgeon/writer Richard Selzer has recounted his own near-fatal experience with Legionnaires' disease in "Raising the Dead. A Doctor's Encounter with His Own Mortality" (Whittle/Viking, New York, 1993, ISBN 0-670-85414-X).
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