Immunisation and vaccination for the under five-year-old.
D000367:Age Factors; D002675:Child, Preschool; D000075202:Contraindications; D006801:Humans; D007114:Immunization / Q000009:adverse effects / Q000379:methods*; D007115:Immunization Schedule; D007223:Infant; D007258:Informed Consent; D010290:Parents / Q000193:education