Vaccination against meningococcal disease.
D001428:Bacterial Vaccines / Q000276:immunology; D002648:Child; D006801:Humans; D008589:Meningococcal Infections / Q000517:prevention & control*; D009345:Neisseria meningitidis / Q000276:immunology*; D014611:Vaccination
D001428:Bacterial Vaccines