1976 Philadelphia Legionnaires' disease outbreak 1976 Philadelphia Legionnaires' disease outbreak The 1976 Legionnaires disease outbreak, occurring in the late summer in Philadelphia, Pennsylvania, 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. On July 21, 1976, the American Legion opened its annual three-day convention at the Bellevue-Stratford Hotel in Philadelphia, Pennsylvania. More than 2,000 Legionnaires, mostly men, attended the convention. The date and city were chosen to coincide with America’s celebration of the 200th anniversary of
Sons of the American Legion through the national Headquarters staff and the various Departments of the "American Legion"." Approval was given for the S.A.L. to conduct their first National S.A.L. Workshop during the Legion's National Convention in Dallas, Texas in 1964. In noting a need for a small national body to give the S.A.L. program national direction and stimulation, the Legion's NEC gave its approval to Resolution 60 at its May 8–9, 1969, meeting in St. Louis, Missouri. Resolution 60 created a four-member Sons of the American Legion Committee. After conducting a long and detailed study of the over-all organizational structure of the S.A.L., the