[Decrease in tetracycline-resistant strains and changes in type distribution of Group A hemolytic streptococci recently isolated from patients with scarlet fever].
D002701:Chloramphenicol / Q000494:pharmacology; D004352:Drug Resistance, Microbial; D004917:Erythromycin / Q000494:pharmacology; D006801:Humans; D012541:Scarlet Fever / Q000382:microbiology*; D013297:Streptococcus pyogenes / Q000187:drug effects / Q000302:isolation & purification*; D013752:Tetracycline / Q000494:pharmacology*
D004917:Erythromycin; D002701:Chloramphenicol; D013752:Tetracycline