Meningococcal disease.
D000293:Adolescent; D000328:Adult; D001428:Bacterial Vaccines / Q000627:therapeutic use*; D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D006801:Humans; D007223:Infant; D008589:Meningococcal Infections / Q000453:epidemiology* / Q000517:prevention & control; D022401:Meningococcal Vaccines; D008875:Middle Aged; D008986:Mongolia / Q000453:epidemiology
D001428:Bacterial Vaccines; D022401:Meningococcal Vaccines