[Preventive vaccination in infancy and preschool age].
D002675:Child, Preschool; D003140:Communicable Disease Control; D005858:Germany; D006801:Humans; D017589:Immunization Programs / Q000458:organization & administration*; D007115:Immunization Schedule; D007117:Immunization, Secondary / Q000451:nursing; D007223:Infant; D014611:Vaccination / Q000451:nursing*