Enterobacter cloacaeEnterobacterEnterobacteriaceae InfectionsEnterobacteriaceaeEnterobacter aerogenesCloacabeta-LactamasesMicrobial Sensitivity TestsCephalosporinsCronobacter sakazakiiAnti-Bacterial Agentsbeta-LactamsCephalosporinaseGram-Negative BacteriaCitrobacter freundiiCephalosporin ResistanceKlebsiellaDrug Resistance, MicrobialCeftazidimePythiumBacteriaKlebsiella pneumoniaeSerratiaDNA, BacterialCitrobacterCefotaximeSerratia marcescensbeta-Lactam ResistancePlasmidsEscherichiaDrug Resistance, BacterialImipenemCarbapenemsNitroreductasesBacterial ProteinsEscherichia coliGenes, BacterialCross InfectionGram-Positive BacteriaSequence Analysis, DNAQuinolonesCefoperazoneCeftizoximeMolecular Sequence DataPenicillanic AcidAztreonamSerratia InfectionsMonobactamsLactamsCefoxitinCucumis sativusThienamycinsProteusTrinitrotolueneGram-Negative Bacterial InfectionsIsoelectric FocusingKlebsiella oxytocaElectrophoresis, Gel, Pulsed-FieldParabensSulfacetamideConjugation, GeneticAlgeriaDrug Resistance, Multiple, BacterialIntegronsBacterial InfectionsCephalexinCefmenoximeBacterial Typing TechniquesAntibiosisPiperacillinCiprofloxacinPenicillinsCefotiamPenicillinaseAnti-Infective AgentsAmpicillinCephaloridineBacteriological Techniques