[Sensitivity of groups A, B and C beta hemolytic streptococci to antibiotics]. / Sensibilidad a antibióticos en estreptococos beta hemolíticos de los grupos A, B y C.

We studied the susceptibility of 330 strains of beta hemolytic streptococci (60 group A, 125 group B, 145 group C) isolated from healthy school children in Las Palmas de Gran Canaria to 17 antibiotics. Only 2% of group A streptococci showed resistance to erythromycin, and 18% to 31% of the beta hemolytic streptococci strains were resistant to trimethoprim-sulfamethoxazole. All of these strains showed susceptibility to betalactam antibiotics, chloramphenicol, clindamycin and vancomycin. Most of them were resistant to tetracycline and aminoglycoside antibiotics.