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 by National Commander Franklin D'Olier helped achieve passage of this legislation by the end of 1919. The American Legion's chief base of support during its first years was among the officers corps of the reserves and the National Guard. The size of the regular army was comparatively small and its representation in the League in its earliest days was even more limited. Consequently, for nearly two decades The American Legion maintained a largely isolationist perspective, best expressed in three resolutions passed by the Minneapolis founding convention: 1. That a large standing army is uneconomic and un-American. National safety with freedom