Penicillin ResistancePenicillinsPenicillin GAnti-Bacterial AgentsDrug Resistance, BacterialDrug Resistance, MicrobialStreptococcus pneumoniaeMicrobial Sensitivity TestsPenicillin VPneumococcal InfectionsPenicillin-Binding ProteinsMuramoylpentapeptide CarboxypeptidaseHeadache Disorders, SecondaryHexosyltransferasesPeptidyl TransferasesDrug ResistanceCumulative Trauma DisordersDrug Resistance, Multiple, BacterialBacterial ProteinsPenicillin G ProcainePenicillinaseDrug Resistance, MultiplePenicillin AmidaseNeisseria gonorrhoeaebeta-LactamasesDrug Resistance, NeoplasmBacteriaPenicillin G BenzathineLactamsAmpicillinSerotypingTetracycline ResistanceAminoacyltransferasesBacterial InfectionsRespiratory Tract InfectionsErythromycinAnti-Infective AgentsStaphylococcus aureusMutationDisease ResistanceEscherichia coliVascular ResistanceStaphylococcusMolecular Sequence Databeta-Lactam ResistanceMacrolidesGenes, BacterialTransformation, BacterialTetracyclineDNA, BacterialDrug Resistance, ViralStreptococcal InfectionsDrug UtilizationGram-Negative BacteriaHealth Services MisuseR FactorsAminoglycosidesCarrier ProteinsOxacillinCefotaximeNasopharynxbeta-LactamsStreptococcusPneumococcal VaccinesHaemophilus influenzaePlant DiseasesTransformation, GeneticBacteremiaAntimicrobial Cationic PeptidesMoraxella (Branhamella) catarrhalisGentamicinsHeadache DisordersPneumonia, PneumococcalGram-Positive BacteriaCulture MediaTetracyclinesPlasmidsFluoroquinolonesAmino Acid SequenceCiprofloxacinElectrophoresis, Gel, Pulsed-FieldBase SequenceTelluriumPolymyxin BCarrier StatePyodermaAthletic InjuriesMicrobial ViabilityCross InfectionKanamycin KinasePseudomonas aeruginosaDrug PrescriptionsTendinopathyCommunity-Acquired InfectionsGram-Negative Bacterial InfectionsNeisseria meningitidisPolymerase Chain ReactionSpainMigraine DisordersUnnecessary Procedures