Letter: Cholera.
D002701:Chloramphenicol / Q000494:pharmacology; D002771:Cholera / Q000517:prevention & control* / Q000628:therapy; D022121:Cholera Vaccines / Q000008:administration & dosage* / Q000600:supply & distribution; D006801:Humans; D007110:Immunity, Active; D013449:Sulfonamides / Q000494:pharmacology; D013752:Tetracycline / Q000494:pharmacology
D022121:Cholera Vaccines; D013449:Sulfonamides; D002701:Chloramphenicol; D013752:Tetracycline