Enterovirus surveillance--United States, 1983.
D000293:Adolescent; D002675:Child, Preschool; D004770:Enterovirus / Q000302:isolation & purification*; D029822:Enterovirus B, Human / Q000302:isolation & purification; D004769:Enterovirus Infections / Q000453:epidemiology*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D014481:United States