[Observations on the immune responses of infants and young children to group A meningococcal polysaccharide vaccine].
D000917:Antibody Formation; D001428:Bacterial Vaccines / Q000276:immunology*; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D009345:Neisseria meningitidis / Q000276:immunology*; D011135:Polysaccharides, Bacterial / Q000276:immunology*; D014611:Vaccination
D001428:Bacterial Vaccines; D011135:Polysaccharides, Bacterial