SulbactamAmpicillinEnterococcus faeciumAmpicillin ResistancePenicillanic AcidCefoperazoneAnti-Bacterial AgentsGram-Positive Bacterial InfectionsMicrobial Sensitivity TestsClavulanic Acidbeta-LactamasesClavulanic AcidsVancomycin ResistanceEnterococcus faecalisPenicillinsEnterococcusDrug Resistance, MicrobialAcinetobacter InfectionsCarbon-Oxygen LigasesVancomycinPenicillin Resistance