Chloramphenicol resistance in typhoid.
D002701:Chloramphenicol / Q000627:therapeutic use*; D004352:Drug Resistance, Microbial; D006801:Humans; D013752:Tetracycline / Q000627:therapeutic use; D014435:Typhoid Fever / Q000188:drug therapy*
D002701:Chloramphenicol; D013752:Tetracycline