The new U.S. initiative in childhood immunization.
D002648:Child; D002675:Child, Preschool; D003140:Communicable Disease Control; D003141:Communicable Diseases / Q000453:epidemiology; D005069:Evaluation Studies as Topic; D005380:Financing, Government; D006266:Health Education; D006801:Humans; D007114:Immunization / Q000191:economics; D007223:Infant; D014481:United States; D014837:Voluntary Health Agencies / Q000706:statistics & numerical data