Confidential study of meningococcal disease in children.
D000293:Adolescent; D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D003219:Confidentiality; D018563:Disease Notification; D006801:Humans; D008589:Meningococcal Infections / Q000209:etiology*; D011159:Population Surveillance / Q000379:methods*; D006113:United Kingdom