Legionnaires' Disease Definition

An acute respiratory infection, often resulting in pneumonia, caused by bacteria (Legionella pneumophila) that may contaminate water or soil.
Webster's New World

A severe form of legionellosis, producing high fever and pneumonia.


Origin of Legionnaires' Disease

  • So called because it was first recognized when an outbreak occurred during an American Legion Convention in Philadelphia in 1976

    From American Heritage Dictionary of the English Language, 5th Edition

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