title: Vaccine advances.
mesh_terms: D001428:Bacterial Vaccines; D002648:Child; D006515:Hepatitis B virus / Q000276:immunology; D006801:Humans; D011135:Polysaccharides, Bacterial / Q000276:immunology; D014612:Vaccines; D014765:Viral Vaccines
chemical_list: D001428:Bacterial Vaccines; D011135:Polysaccharides, Bacterial; D014612:Vaccines; D014765:Viral Vaccines