1976 Philadelphia Legionnaires' disease outbreak States Center for Disease Control and Prevention (CDC) in 2017 only use the term Legionnaires' disease to refer to the serious version with pneumonia. CDC investigators quickly discovered outbreaks of respiratory disease caused by "L. pneumophila" dating back to 1959. An outbreak of what was dubbed Pontiac fever occurred in a health department in Pontiac, Michigan in July 1967. No one died. Although caused by the same bacterium, Pontiac fever is a milder ailment than Legionnaires' disease. Pneumonia is absent in those with Pontiac fever. An outbreak of pneumonia in July–August, 1965, at St. Elizabeths Hospital in Washington, DC, which
American Legion Veterans of the Korean War were approved for membership in The American Legion in 1950, and The American Legion Child Welfare Foundation was formed in 1954. On May 30, 1969, the Cabin John Bridge, which carried the Capital Beltway (I-495) across the Potomac River northwest of Washington, was officially renamed to the "American Legion Memorial Bridge" in a ceremony led by Lt. Gen. Lewis B. Hershey, director of the U.S. Selective Service System. In 1976, an outbreak of bacterial pneumonia occurred in a convention of The American Legion at the Bellevue Stratford Hotel in Philadelphia. This pneumonia killed 34 people