Percentage susceptibility rates (with 95% CI) based on CLSI breakpoints for antibiotics against PSSP, PISP and PRSP from Turkey. Penicillin susceptibility categories are based on oral penicillin CLSI breakpoints. ^aSusceptibility was significantly higher among PSSP and PISP isolates than PRSP isolates (P < 0.0001). ^bSusceptibility was significantly higher among PSSP isolates than PISP isolates and among PISP isolates than PRSP isolates (P < 0.001). ^cSusceptibility was significantly higher among PSSP isolates than PISP and PRSP isolates (P < 0.0001).