Penicillin ResistancePenicillinsbeta-LactamasesPenicillinasePenicillin GMicrobial Sensitivity TestsAnti-Bacterial AgentsSonicationNeisseria gonorrhoeaeStreptococcus pneumoniaeDrug Resistance, BacterialPenicillin VPneumococcal InfectionsPenicillin-Binding ProteinsMuramoylpentapeptide CarboxypeptidaseDrug Resistance, MicrobialHexosyltransferasesPeptidyl TransferasesPoint MutationMutationPenicillin G ProcaineMutation, MissensePenicillin AmidasePenicillin G BenzathineLactamsDrug Resistancebeta-Lactam ResistanceBacterial ProteinsAminoacyltransferasesSerotypingDrug Resistance, MultiplePlasmidsDrug Resistance, Multiple, BacterialErythromycinMolecular Sequence DataCarrier ProteinsTransformation, BacterialEscherichia coliMacrolidesStreptococcal InfectionsAmpicillinBase SequenceBacteriaKlebsiella pneumoniaeTetracyclineFrameshift MutationNasopharynxCefotaximeCarbapenemsPneumococcal VaccinesOxacillinPolymerase Chain ReactionStreptococcusDrug Resistance, NeoplasmTransformation, Geneticbeta-LactamsDNA, BacterialGenes, BacterialEnterobacteriaceaeMoraxella (Branhamella) catarrhalisPneumonia, PneumococcalAmino Acid SequenceR FactorsGerm-Line MutationStaphylococcusDrug Resistance, ViralKlebsiella InfectionsStaphylococcus aureusCarrier StateInterleukin-1betaDisease ResistanceElectrophoresis, Gel, Pulsed-FieldRespiratory Tract InfectionsNeisseria meningitidisSpainIndiaPedigreeVascular ResistanceCommunity-Acquired InfectionsCulture MediaHaemophilus influenzaeSequence Analysis, DNAGenotypeBacteremiaMolecular EpidemiologyPhenotypeMutation RateDNA FingerprintingAllelesbeta 2-MicroglobulinMutagenesis, Site-DirectedCephalosporinsExonsAmino Acid SubstitutionCell LineHeterozygoteTetracycline ResistanceDNA Mutational AnalysisCloning, MolecularDNA Primers