Epidemic

1976 Philadelphia legionellosis outbreak

21 Jul 1976 · 39.95° N, 75.17° W

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What the records say

When
21 Jul 1976
Kind
Epidemic
Coordinates
39.95° N, 75.17° W
Description
first occasion of a cluster of a pneumonia cases later identified as Legionnaires' disease
Deaths
29

Placed at the area, not an exact site.

1976 Philadelphia Legionnaires' disease outbreak

Disease outbreak in Pennsylvania, United States

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.

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