title: Loss of antibodies, but not of protection.
authors.forename: Jürgen J
authors.initials: JJ
authors.lastname: Wenzel
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Jilg
mesh_terms: D002648:Child; D002675:Child, Preschool; D015721:Diphtheria-Tetanus-Pertussis Vaccine / Q000008:administration & dosage / Q000276:immunology*; D022681:Diphtheria-Tetanus-acellular Pertussis Vaccines / Q000008:administration & dosage / Q000276:immunology*; D006509:Hepatitis B / Q000276:immunology* / Q000517:prevention & control*; D006510:Hepatitis B Antibodies / Q000097:blood*; D017325:Hepatitis B Vaccines / Q000008:administration & dosage / Q000276:immunology*; D006801:Humans; D007117:Immunization, Secondary / Q000379:methods; D007156:Immunologic Memory; D011054:Poliovirus Vaccine, Inactivated / Q000008:administration & dosage / Q000276:immunology*; D016032:Randomized Controlled Trials as Topic; D017778:Vaccines, Combined / Q000008:administration & dosage / Q000276:immunology
chemical_list: D015721:Diphtheria-Tetanus-Pertussis Vaccine; D022681:Diphtheria-Tetanus-acellular Pertussis Vaccines; D006510:Hepatitis B Antibodies; D017325:Hepatitis B Vaccines; C426944:Hexavac; D011054:Poliovirus Vaccine, Inactivated; D017778:Vaccines, Combined