Meningococcal infection unresponsive to cephalothin.
D000328:Adult; D002512:Cephalothin / Q000494:pharmacology / Q000627:therapeutic use*; D002701:Chloramphenicol / Q000627:therapeutic use; D004352:Drug Resistance, Microbial; D006801:Humans; D008297:Male; D008585:Meningitis, Meningococcal / Q000188:drug therapy*
D002701:Chloramphenicol; D002512:Cephalothin