title: Polyvalent pneumococcal vaccine: its implications for postsplenectomy patients.
mesh_terms: D001428:Bacterial Vaccines / Q000008:administration & dosage*; D006801:Humans; D011008:Pneumococcal Infections / Q000517:prevention & control*; D022242:Pneumococcal Vaccines; D012306:Risk; D013154:Spleen / Q000276:immunology*; D013156:Splenectomy
chemical_list: D001428:Bacterial Vaccines; D022242:Pneumococcal Vaccines