title: Clinical trial of hepatitis B vaccine in a simplified immunization programme.
mesh_terms: D006509:Hepatitis B / Q000517:prevention & control*; D017325:Hepatitis B Vaccines; D006801:Humans; D007114:Immunization; D007115:Immunization Schedule; D007117:Immunization, Secondary; D007223:Infant; D012675:Senegal; D014761:Viral Hepatitis Vaccines / Q000008:administration & dosage*
chemical_list: D017325:Hepatitis B Vaccines; D014761:Viral Hepatitis Vaccines