title: Trial of a serogroup A meningococcus polysaccharide vaccine in Nigeria.
mesh_terms: D000293:Adolescent; D000907:Antibodies, Bacterial / Q000032:analysis; D000917:Antibody Formation; D001428:Bacterial Vaccines / Q000008:administration & dosage*; D002353:Carrier State / Q000517:prevention & control*; D002648:Child; D002675:Child, Preschool; D005069:Evaluation Studies as Topic; D006801:Humans; D008585:Meningitis, Meningococcal / Q000517:prevention & control*; D009345:Neisseria meningitidis / Q000276:immunology; D009549:Nigeria; D011135:Polysaccharides, Bacterial / Q000008:administration & dosage*; D013048:Specimen Handling; D013745:Tetanus Toxoid / Q000008:administration & dosage; D014611:Vaccination
chemical_list: D000907:Antibodies, Bacterial; D001428:Bacterial Vaccines; D011135:Polysaccharides, Bacterial; D013745:Tetanus Toxoid