Polysaccharide vaccines.
D000375:Aging; D000818:Animals; D000907:Antibodies, Bacterial / Q000276:immunology; D000917:Antibody Formation; D001424:Bacterial Infections / Q000517:prevention & control*; D001428:Bacterial Vaccines / Q000008:administration & dosage / Q000276:immunology*; D006801:Humans; D011135:Polysaccharides, Bacterial / Q000008:administration & dosage / Q000276:immunology*; D013997:Time Factors
D000907:Antibodies, Bacterial; D001428:Bacterial Vaccines; D011135:Polysaccharides, Bacterial