Shigella surveillance in the United States, 1975.
D004405:Dysentery, Bacillary / Q000453:epidemiology* / Q000266:history; D049673:History, 20th Century; D006801:Humans; D012762:Shigella dysenteriae / Q000302:isolation & purification; D012763:Shigella flexneri / Q000302:isolation & purification; D012764:Shigella sonnei / Q000302:isolation & purification; D014481:United States