Nasopharyngeal carriage of Neisseria meningitidis in the contacts of index cases of meningococcal meningitis.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002353:Carrier State / Q000453:epidemiology*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008585:Meningitis, Meningococcal / Q000453:epidemiology / Q000635:transmission*; D008875:Middle Aged; D009305:Nasopharynx / Q000382:microbiology*; D009345:Neisseria meningitidis / Q000302:isolation & purification*; D012737:Sex Factors