title: Emergence of meningococcal meningitis caused by W 135 subgroup in Africa.
mesh_terms: D000293:Adolescent; D000328:Adult; D000349:Africa; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D008585:Meningitis, Meningococcal / Q000453:epidemiology* / Q000382:microbiology; D009345:Neisseria meningitidis / Q000145:classification*