PiperacillinPenicillin ResistancePenicillinsAnti-Bacterial AgentsPenicillin GDrug Resistance, MicrobialDrug Resistance, BacterialMicrobial Sensitivity TestsStreptococcus pneumoniaePenicillanic AcidPenicillin VPneumococcal InfectionsPenicillin-Binding ProteinsDrug Resistance, Multiple, BacterialMuramoylpentapeptide CarboxypeptidasePeptidyl TransferasesHexosyltransferasesDrug ResistanceDrug Resistance, Multiplebeta-LactamasesLactamsPenicillin G ProcaineBacterial Proteinsbeta-LactamsAmpicillinPenicillinaseNeisseria gonorrhoeaeTetracyclineErythromycinDNA, BacterialPenicillin AmidaseR FactorsBacteriaCarbenicillinSerotypingDrug Resistance, NeoplasmEscherichia coliTicarcillinCefotaximePenicillin G BenzathinePlasmidsPseudomonas aeruginosaGenes, BacterialTransformation, BacterialMacrolidesStaphylococcus aureusTetracycline ResistanceGentamicinsBacterial InfectionsAminoglycosidesCephalosporinsMutationEnterobacteriaceaebeta-Lactam ResistanceAminoacyltransferasesMolecular Sequence DataStreptococcal InfectionsStaphylococcusGram-Negative BacteriaDisease ResistanceStreptomycinConjugation, GeneticStreptococcusVascular ResistanceCiprofloxacinAnti-Infective AgentsCarrier ProteinsKanamycinNasopharynxTobramycinOxacillinDrug Resistance, ViralElectrophoresis, Gel, Pulsed-FieldTransformation, GeneticPneumococcal VaccinesBacteremiaAntibiotic ProphylaxisAmpicillin ResistanceIntegronsPneumonia, PneumococcalChloramphenicol ResistancePolymerase Chain ReactionCulture MediaMoraxella (Branhamella) catarrhalisCommunity-Acquired InfectionsAzlocillinDrug Therapy, CombinationCeftazidimeRespiratory Tract InfectionsHaemophilus influenzaeCross InfectionKlebsiellaCefoxitinPseudomonas InfectionsSulbactamImipenemBase SequenceMezlocillinCarrier StateChloramphenicol