Cephalosporin ResistanceCephalosporinsMicrobial Sensitivity TestsAnti-Bacterial AgentsCefotaximebeta-LactamasesDrug Resistance, BacterialCefuroximeEnterobacteriaceae Infectionsbeta-Lactam ResistancePenicillin-Binding ProteinsAnti-Infective AgentsGram-Positive Bacterial InfectionsDrug Resistance, MicrobialAntimicrobial Cationic PeptidesEscherichia coliAcremoniumEnterococcus faecalisDrug Resistance, Multiple, BacterialBacterial ProteinsDNA, BacterialBacteriaPlasmidsGram-Negative BacteriaDrug ResistanceGram-Positive BacteriaBacterial InfectionsCeftriaxoneCephalexinCephalosporinaseStaphylococcus aureusEnterobacteriaceaeDrug Resistance, MultiplePenicillinsCephalothinPenicillin ResistanceCephaloridineCefiximeCefmenoximeCeftizoximePseudomonas aeruginosaDrug Resistance, NeoplasmFluoroquinolonesPenicillin AmidaseMolecular Sequence DataCeftazidimeCefazolinAmpicillinDrug UtilizationGram-Negative Bacterial InfectionsCefaclorDisease ResistanceCiprofloxacinCefamandoleCross InfectionStreptococcus pneumoniaebeta-LactamsMutationAmino Acid SequenceVascular ResistanceEnterococcusEnterobacterStaphylococcusDisk Diffusion Antimicrobial TestsColony Count, MicrobialMethicillin ResistancePenicillinasePenicillin GEscherichia coli InfectionsKlebsiella pneumoniaeStaphylococcal InfectionsNeisseria gonorrhoeaeDrug Resistance, ViralMacrolidesTetracyclineSalmonellaTetracycline ResistanceVancomycinBacteremiaBacteria, AnaerobicCefonicidErythromycinCulture MediaDrug StabilityLactamsFecesGentamicinsOxytetracyclineElectrophoresis, Gel, Pulsed-FieldVancomycin ResistanceCommunity-Acquired InfectionsImipenemMuramoylpentapeptide CarboxypeptidaseCephradineGenes, BacterialCathelicidinsAnti-Infective Agents, LocalMicrobial ViabilityAminoglycosidesTime Factors