PiperacillinPenicillin ResistancePenicillinsPenicillin GStreptococcus pneumoniaePenicillanic AcidAnti-Bacterial AgentsMicrobial Sensitivity TestsPenicillin VPneumococcal InfectionsPenicillin-Binding ProteinsMuramoylpentapeptide CarboxypeptidaseDrug Resistance, MicrobialHexosyltransferasesPeptidyl TransferasesDrug Resistance, BacterialPenicillin G ProcainePenicillinaseLactamsPenicillin Amidasebeta-Lactamasesbeta-LactamsNeisseria gonorrhoeaeTicarcillinPenicillin G BenzathineAmpicillinCarbenicillinDrug Resistance, Multiple, BacterialDrug Resistance, MultipleAminoacyltransferasesSerotypingDrug ResistanceCefotaximeBacterial ProteinsErythromycinTransformation, BacterialStreptococcal InfectionsMacrolidesStreptococcusCephalosporinsBacteriaCarrier ProteinsTetracyclineNasopharynxPneumococcal VaccinesOxacillinAzlocillinPseudomonas aeruginosaPneumonia, PneumococcalTobramycinGentamicinsDrug Resistance, NeoplasmMezlocillinMoraxella (Branhamella) catarrhalisStaphylococcusTransformation, GeneticDNA, BacterialEnterobacteriaceaeCefoxitinSulbactamR FactorsStaphylococcus aureusRespiratory Tract InfectionsBacteremiaMutationClavulanic AcidGenes, BacterialPlasmidsCarrier StateCeftazidimebeta-Lactam ResistanceBacterial InfectionsDrug Therapy, CombinationImipenemMolecular Sequence DataDisease ResistanceGram-Negative BacteriaElectrophoresis, Gel, Pulsed-FieldCulture MediaFloxacillinHaemophilus influenzaeNeisseria meningitidisAztreonamCephalothinVascular ResistanceCefoperazoneCommunity-Acquired InfectionsClavulanic AcidsThienamycinsAnti-Infective AgentsKlebsiellaSpainCiprofloxacinDrug Resistance, ViralAminoglycosidesSerratiaEscherichia coliAmikacinBacteroides fragilisPseudomonas Infections