Legionnaires' disease that occur globally is not known. Legionnaires' disease is the cause of an estimated 2-9% of pneumonia cases that are acquired outside of hospital. An estimated 8,000 to 18,000 cases a year in the United States require hospitalization. Outbreaks of disease account for a minority of cases. While it can occur any time of the year, it is more common in the summer and fall. The disease is named after the outbreak where it was first identified, at a 1976 American Legion convention in Philadelphia. The length of time between exposure to the bacteria and the appearance of symptoms is
American Legion part of this was drum and bugle corps competition in which approximately 14,000 members took part. The American Legion Memorial Bridge in Traverse City, Michigan, was completed in 1930. The Traverse City city commission decided to purchase dedication plaques for $100 at the request of The American Legion in 1930. The Sons of the American Legion formed at The American Legion's 14th National Convention in Portland, Oregon, on September 12–15, 1932. Membership is limited to the male descendants of members of The American Legion, or deceased individuals who served in the armed forces of the United States during times specified