CDC updates childhood immunization schedule.
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D000293:Adolescent; D002487:Centers for Disease Control and Prevention, U.S.; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007114:Immunization / Q000592:standards*; D007115:Immunization Schedule; D007252:Influenza Vaccines; D014481:United States
D007252:Influenza Vaccines