title: Antibody response of adults to an aluminum hydroxide-adsorbed Neisseria meningitidis serotype 2b protein-group B polysaccharide vaccine.
abstract: A group B Neisseria meningitidis serotype protein vaccine was studied clinically in adults. The vaccine comprised lipopolysaccharide-depleted outer membrane vesicles from a serotype 2b strain, 3006-M2, noncovalently complexed with group B meningococcal polysaccharide. Volunteers received 25 micrograms each of protein and polysaccharide administered intramuscularly either in 0.9% NaCl or adsorbed onto aluminum hydroxide on weeks 0 and 6. Most individuals experienced mild local reactions, but there were no systemic reactions. Both vaccine formulations stimulated antibodies to the outer membrane proteins of serotypes 2a:P1.2 and 2b:P1.2, but higher levels were achieved with the aluminum hydroxide-adsorbed vaccine after two immunizations. Vaccine-induced antibodies were primarily IgG and were bactericidal for both a serotype 2a and a serotype 2b strain. Induction of bactericidal antibodies has been shown to be a major predictor of protection against meningococcal disease.
mesh_terms: D000328:Adult; D000536:Aluminum Hydroxide; D000907:Antibodies, Bacterial / Q000096:biosynthesis*; D001425:Bacterial Outer Membrane Proteins / Q000276:immunology; D001428:Bacterial Vaccines / Q000009:adverse effects / Q000032:analysis / Q000276:immunology*; D004311:Double-Blind Method; D004591:Electrophoresis, Polyacrylamide Gel; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D007117:Immunization, Secondary; D007074:Immunoglobulin G / Q000096:biosynthesis; D008297:Male; D022401:Meningococcal Vaccines; D009345:Neisseria meningitidis / Q000276:immunology*; D011897:Random Allocation
chemical_list: D000907:Antibodies, Bacterial; D001425:Bacterial Outer Membrane Proteins; D001428:Bacterial Vaccines; D007074:Immunoglobulin G; D022401:Meningococcal Vaccines; D000536:Aluminum Hydroxide