EnterobacterEnterobacter cloacaeEnterobacter aerogenesEnterobacteriaceae InfectionsEnterobacteriaceaeCronobacter sakazakiibeta-LactamasesKlebsiellaMicrobial Sensitivity TestsCephalosporinsAnti-Bacterial AgentsSerratiaGram-Negative BacteriaBacteriabeta-LactamsEscherichiaCephalosporinaseCitrobacterKlebsiella pneumoniaeCephalosporin ResistanceDNA, BacterialCitrobacter freundiiDrug Resistance, MicrobialProteusCeftazidimebeta-Lactam ResistanceSerratia marcescensDrug Resistance, BacterialCross InfectionGram-Positive BacteriaSequence Analysis, DNAInfant FormulaCefotaximeBacteriological TechniquesEscherichia coliImipenemBacterial ProteinsPlasmidsErwiniaCronobacterMolecular Sequence DataCefoperazoneCarbapenemsKluyveraGram-Negative Bacterial InfectionsGenes, BacterialPythiumCefoxitinFood MicrobiologyBacterial Typing TechniquesPenicillanic AcidBacterial InfectionsCulture MediaButylene GlycolsBacteremiaAztreonamLactamsRNA, Ribosomal, 16SDrug Resistance, Multiple, BacterialCephalothinCefamandolePenicillinsGram-Negative Aerobic BacteriaCephalexinElectrophoresis, Gel, Pulsed-FieldKlebsiella oxytocaIsoelectric FocusingInfant FoodAmpicillinQuinolonesPiperacillinColony Count, MicrobialSerratia InfectionsThienamycinsPorinsParabensConjugation, GeneticMonobactamsNitroreductasesCeftizoximeMorusKlebsiella InfectionsWound InfectionAmikacinBacterial Outer Membrane Proteins