Cephalosporin ResistanceVancomycinCephalosporinsAnti-Bacterial AgentsMicrobial Sensitivity TestsCefotaximeVancomycin Resistancebeta-LactamasesCefuroximeDrug Resistance, BacterialEnterobacteriaceae InfectionsGram-Positive Bacterial Infectionsbeta-Lactam ResistancePenicillin-Binding ProteinsDrug Resistance, MicrobialEnterococcus faecalisAntimicrobial Cationic PeptidesAcremoniumEscherichia coliStaphylococcus aureusBacterial ProteinsAnti-Infective AgentsDNA, BacterialStaphylococcal InfectionsTeicoplaninPlasmidsBacteriaGram-Positive BacteriaDrug ResistanceEnterococcusCeftriaxoneMethicillin ResistanceGram-Negative BacteriaPenicillin ResistanceCephalexinCefazolinDrug Resistance, Multiple, BacterialPenicillinsCephalosporinaseAcetamidesBacterial InfectionsCephalothinMethicillin-Resistant Staphylococcus aureusOxazolidinonesDaptomycinDrug Resistance, MultipleEnterobacteriaceaeCephaloridineCefmenoximeCeftizoximeBacteremiaStaphylococcusDrug Resistance, NeoplasmGentamicinsCeftazidimeEnterococcus faeciumPenicillin AmidaseCefamandoleAminoglycosidesGlycopeptidesCefiximeAmpicillinColony Count, MicrobialCefaclorDisease ResistanceCross InfectionEndocarditis, BacterialMolecular Sequence DataPseudomonas aeruginosaStaphylococcus epidermidisStreptococcus pneumoniaeCiprofloxacinVascular ResistanceEnterobacterbeta-LactamsMethicillinFluoroquinolonesPenicillin GClostridium difficileDrug Resistance, ViralOxacillinCulture MediaCarbon-Oxygen LigasesMutationMuramoylpentapeptide CarboxypeptidaseDrug StabilityPenicillinaseCefonicidHexosyltransferasesGram-Negative Bacterial InfectionsPeptidyl TransferasesDrug Therapy, CombinationAntibiotic ProphylaxisLactamsAmino Acid SequenceMicrobial ViabilityDisk Diffusion Antimicrobial TestsElectrophoresis, Gel, Pulsed-FieldKlebsiella pneumoniaeAztreonam