Meningococcal meningitis.
D000293:Adolescent; D000328:Adult; D006801:Humans; D008297:Male; D008585:Meningitis, Meningococcal / Q000628:therapy*; D008887:Military Medicine; D009345:Neisseria meningitidis / Q000302:isolation & purification; D010406:Penicillins / Q000627:therapeutic use
D010406:Penicillins