Disease prevention by immunization and chemoprophylaxia.
D000293:Adolescent; D000328:Adult; D001424:Bacterial Infections / Q000517:prevention & control*; D001428:Bacterial Vaccines / Q000008:administration & dosage; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007114:Immunization; D007115:Immunization Schedule; D007117:Immunization, Secondary; D007223:Infant; D014765:Viral Vaccines / Q000008:administration & dosage; D014777:Virus Diseases / Q000517:prevention & control*
D001428:Bacterial Vaccines; D014765:Viral Vaccines