CefotaximeCephalosporinsMoxalactamMicrobial Sensitivity TestsCephalosporin ResistanceAnti-Bacterial AgentsCephamycinsbeta-LactamasesCefoperazoneCeftazidimebeta-LactamsCeftriaxoneCeftizoximeEnterobacteriaceaePenicillin ResistancePenicillinsDrug Resistance, MicrobialStreptococcus pneumoniaeEnterobacteriaceae InfectionsCefmenoximebeta-Lactam ResistanceCefoxitinAztreonamCephalosporinaseLactamsBacteriaImipenemPiperacillinCefuroximeKlebsiella pneumoniaeThienamycinsCefotiamPenicillin-Binding ProteinsTreatment OutcomeEnterobacterDrug Resistance, BacterialClavulanic AcidAmpicillinMeningitisGram-Negative BacteriaBacterial InfectionsCiprofloxacinKlebsiella InfectionsEscherichia coliAzlocillinAmpicillin ResistanceDrug Therapy, CombinationTobramycinMuramoylpentapeptide CarboxypeptidasePneumococcal InfectionsSerum Bactericidal TestAnti-Infective AgentsPenicillanic AcidClavulanic AcidsEmpiricismHexosyltransferasesKlebsiellaPeptidyl TransferasesDrug SynergismMeningitis, PneumococcalDrug Resistance, Multiple, BacterialGentamicinsFleroxacinIsoelectric FocusingAmikacinPenicillin GMezlocillinVancomycinAmoxicillinSulbactamPseudomonas aeruginosaEscherichia coli InfectionsProteus vulgarisNeisseria gonorrhoeae