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
Southern Baptist Convention War, another split occurred when most freedmen set up independent black congregations, regional associations, and state and national conventions, such as the National Baptist Convention, which became the second-largest Baptist convention by the end of the 19th century. Others joined new African-American denominations, chiefly the African Methodist Episcopal Church, which was established in Philadelphia, Pennsylvania in the early 19th century, as the first independent black denomination in the United States. Since the 1940s, the Southern Baptist Convention has shifted from some of its regional and historical identification. Especially since the late 20th century, the SBC has sought new members among