title: When should at-risk infants be boosted with hepatitis B vaccine?
mesh_terms: D002675:Child, Preschool; D005069:Evaluation Studies as Topic; D005260:Female; D006509:Hepatitis B / Q000517:prevention & control*; D017325:Hepatitis B Vaccines; D006801:Humans; D007115:Immunization Schedule; D007117:Immunization, Secondary; D007223:Infant; D007231:Infant, Newborn; D012306:Risk; D014761:Viral Hepatitis Vaccines / Q000008:administration & dosage*
chemical_list: D017325:Hepatitis B Vaccines; D014761:Viral Hepatitis Vaccines