[Grouping of beta-hemolytic streptococci isolated from clinical specimens and their sensitivity to penicillin G]. / Cesitli klinik örneklerden izole edilen beta hemolitik streptokoklarin gruplandirilmasi ve penisilin G'ye duyarliliklarinin arastirilmasi.

ABSTRACT

260 beta hemolytic streptococci were isolated from clinical specimens sent to Microbiology Laboratory, Faculty of Medicine, Anadolu University between September 1988 - September 1989. They were grouped according to their sensitivity to bacitracin and trimethoprim/sulfamethoxazole (SXT) and also serologically. Of 260 isolates, 83.8% were group A, 1.2% group B, 6.5% group C, 3.5% group D and 5% were group G. All of 121 group A isolates confirmed serologically were susceptible to bacitracin. Excluded 9 strains, all of them were resistant to SXT. Other groups were mostly resistant to bacitracin. While group C and G generally were susceptible to SXT, B and D were resistant. Streptococci were documented according to distribution of clinical specimens. From throat 191 group A, 16 group C, 1 group D and 11 group G; from nose 7 group A; from pus 19 group A, 4 group D and 1 group G; from vagina 1 group A, 3 group B, 2 group D and 1 group G; from urine 2 group D; from blood 1 group C were isolated. All isolates were tested for penicillin G sensitivity by Kirby-Bauer disc diffusion method. While one of three group B strains and four of eight group D strains were resistant to penicillin G, all the other isolates were susceptible to penicillin G.