title: Need for agreement on a single pneumococcal vaccine formulation.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000917:Antibody Formation; D001428:Bacterial Vaccines / Q000276:immunology*; D002648:Child; D002675:Child, Preschool; D006801:Humans; D011008:Pneumococcal Infections / Q000517:prevention & control*; D011135:Polysaccharides, Bacterial / Q000009:adverse effects; D013296:Streptococcus pneumoniae / Q000276:immunology*
chemical_list: D001428:Bacterial Vaccines; D011135:Polysaccharides, Bacterial