1976 Philadelphia Legionnaires' disease outbreak
Disease outbreak in Pennsylvania, United States
1976 Philadelphia Legionnaires' disease outbreak
The 1976 Legionnaires' disease outbreak, occurring in the late summer in Philadelphia, Pennsylvania, at an annual American Legion convention, was the first occasion in which a cluster of a particular type of pneumonia cases were determined to be caused by the Legionella pneumophila bacteria. Previous outbreaks were retroactively diagnosed as being most probably caused by Legionella bacteria.
Read on Wikipedia · Image Jack E. Boucher, HABS photographer, Public domain
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