EnterobacterBacteremiaEnterobacter cloacaeEnterobacter aerogenesEnterobacteriaceae InfectionsEnterobacteriaceaeCronobacter sakazakiiAnti-Bacterial AgentsMicrobial Sensitivity Testsbeta-LactamasesGram-Negative Bacterial InfectionsKlebsiellaGram-Negative BacteriaSepsisCephalosporinsCross InfectionStaphylococcal InfectionsBacteriaSerratiabeta-LactamsKlebsiella pneumoniaeDNA, BacterialGram-Positive Bacterial InfectionsDrug Resistance, BacterialDrug Resistance, MicrobialCitrobacterBloodEscherichiaCephalosporinaseBacteriological TechniquesGram-Positive BacteriaStaphylococcus aureusCephalosporin Resistancebeta-Lactam ResistanceKlebsiella InfectionsBacterial Typing TechniquesCeftazidimeEscherichia coliSequence Analysis, DNABacterial InfectionsCitrobacter freundiiSerratia marcescensRNA, Ribosomal, 16SCatheters, IndwellingCarbapenemsCatheterization, Central VenousBacterial ProteinsProteusDrug Resistance, Multiple, BacterialCulture MediaVancomycinImipenemElectrophoresis, Gel, Pulsed-FieldEscherichia coli InfectionsCefotaximePenicillanic AcidPseudomonas aeruginosaMethicillin-Resistant Staphylococcus aureusStreptococcal InfectionsMolecular Sequence DataEndocarditis, BacterialCatheter-Related InfectionsCommunity-Acquired InfectionsEnterococcusRetrospective StudiesGenes, BacterialPiperacillinColony Count, MicrobialAnti-Infective AgentsSerratia InfectionsPenicillinsHospitals, UniversityAmpicillinThienamycinsInfant FormulaPseudomonas InfectionsCiprofloxacinPlasmidsPneumococcal InfectionsGentamicinsMethicillin ResistanceStaphylococcusLactamsActinomycetales InfectionsErwiniaCronobacterPolymerase Chain ReactionCefoperazoneVancomycin ResistanceInfant, NewbornDNA, RibosomalKluyveraAminoglycosidesEquipment ContaminationCefamandoleAmikacinPythiumCephalothinCefoxitinAcinetobacter