From the Centers for Disease Control and Prevention. National, state and urban area vaccination coverage levels among children aged 19-35 months--United States, April 1994-March 1995.
D002675:Child, Preschool; D003140:Communicable Disease Control / Q000706:statistics & numerical data*; D006801:Humans; D007223:Infant; D011159:Population Surveillance; D014481:United States / Q000453:epidemiology; D014611:Vaccination / Q000706:statistics & numerical data*