EnterobacteriaceaeEnterobacteriaceae Infectionsbeta-LactamasesMicrobial Sensitivity TestsAnti-Bacterial Agentsbeta-Lactam ResistanceEnterobacterSerratiaProteusCarbapenemsBacteriological TechniquesKlebsiellaEscherichiaKlebsiella pneumoniaebeta-LactamsCephalosporinsGram-Negative BacteriaCitrobacterBacteriaEscherichia coliDNA, BacterialDrug Resistance, BacterialBacterial ProteinsDrug Resistance, Multiple, BacterialDrug Resistance, MicrobialSalmonellaEnterobacter cloacaeKlebsiella InfectionsSerratia marcescensMolecular Sequence DataGram-Negative Bacterial InfectionsVibrionaceaeEvaluation Studies as TopicAztreonamCeftazidimeCefotaximeProteus mirabilisKlebsiella oxytocaProvidenciaShigellaCulture MediaCephalosporin ResistanceKluyveraFecesPseudomonadaceaePseudomonas aeruginosaCitrobacter freundiiPenicillanic AcidCross InfectionThienamycinsConjugation, GeneticAzabicyclo CompoundsPlasmidsSequence Analysis, DNAQuinolonesGram-Positive BacteriaImipenemPhylogenyErwiniaBacteria, AerobicAnti-Infective AgentsSpecies SpecificityClavulanic AcidBacterial InfectionsAminoglycosidesAcinetobacterAmikacinBacteremiaPolymerase Chain ReactionAntisepsisFluoroquinolonesPiperacillinHospitalsGene Transfer, HorizontalKanamycinCiprofloxacinGenes, BacterialRNA, Ribosomal, 16SMinocyclineBacterial Typing TechniquesGentamicinsDisk Diffusion Antimicrobial TestsBase SequenceIntegronsAmino Acid SequenceYersiniaChromogenic CompoundsAgarFermentationCefoxitinBacteria, AnaerobicEsculinMolecular TypingElectrophoresis, Gel, Pulsed-FieldCefoperazonePseudomonasEscherichia coli InfectionsProteus vulgarisAeromonasMultilocus Sequence Typing