Abstract
Tests for susceptibility of 29 group A, 4 group C, and 2 group G strains of beta-hemolytic streptococci to 63 antibiotics and to trimethoprim and sulfamethoxazole, singly and combined in a ratio of 1:16, were carried out in vitro. All strains tested were moderately or highly susceptible to all the antibiotics used except those belonging to the aminoglycoside and polymyxin groups. A few were also resistant to the tetracyclines and to sulfamethoxazole alone. Comparisons with results obtained in previous years indicate that, except for the tetracyclines and sulfonamides, there has been no change in the susceptibility of beta-hemolytic streptococci to the most important and useful antibiotics, particularly penicillin.
MeSH Terms
Aminoglycosides/pharmacology
Anti-Bacterial Agents/pharmacology
Cephalosporins/pharmacology
Chloramphenicol/pharmacology
Lincomycin/pharmacology
Microbial Sensitivity Tests
Penicillins/pharmacology
Polymyxins/pharmacology
Spectinomycin/pharmacology
Streptococcus/drug effects
Tetracyclines/pharmacology
Chemicals
Aminoglycosides
Anti-Bacterial Agents
Cephalosporins
Penicillins
Polymyxins
Tetracyclines
Chloramphenicol
Spectinomycin
Lincomycin
Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Finland M
Garner C
Wilcox C
Sabath L D
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