EnterobacteriaceaeEnterobacteriaceae Infectionsbeta-LactamasesMicrobial Sensitivity TestsEnterobacterBacteriological TechniquesGram-Negative BacteriaAnti-Bacterial AgentsSerratiaKlebsiellaEscherichiaBacteriaCitrobacterProteusCephalosporinsProvidenciaDrug Resistance, MicrobialVibrionaceaebeta-LactamsCarbapenemsEvaluation Studies as TopicKlebsiella pneumoniaebeta-Lactam ResistanceCeftazidimeAztreonamGram-Positive BacteriaDNA, BacterialSalmonellaEscherichia coliCeftizoximeCefotaximeKluyveraFleroxacinBacteria, AerobicPseudomonadaceaeCiprofloxacinFluoroquinolonesClavulanic AcidsCulture MediaQuinolonesSerratia marcescensAnti-Infective AgentsThienamycinsBacterial InfectionsGram-Negative Bacterial InfectionsBacteria, AnaerobicKlebsiella oxytocaCitrobacter freundiiProteus mirabilisClavulanic AcidEnterobacter cloacaeNaphthyridinesShigellaBacterial ProteinsErwiniaPseudomonas aeruginosaCefoperazoneAmikacinSpecies SpecificityImipenemSulbactamCefmenoximeTicarcillinKanamycinConjugation, GeneticPlasmidsNorfloxacinDrug Resistance, BacterialGenes, BacterialFecesYersiniaFermentationBacterial Typing TechniquesOfloxacinCross InfectionMolecular Sequence DataEnoxacinPiperacillinLactamsL-Amino Acid OxidaseNucleic Acid HybridizationPlesiomonasIsoelectric FocusingGram-Negative Aerobic BacteriaGentamicinsMicrobiological TechniquesDrug Resistance, Multiple, BacterialRNA, Ribosomal, 16SR FactorsAgarSequence Analysis, DNAKlebsiella InfectionsReagent Kits, DiagnosticPseudomonasBacteremiaSalmonella typhimuriumPolymerase Chain ReactionBloodCeftriaxoneCephalosporin Resistance