Penicillin ResistancePenicillinsPenicillin GStreptococcus pneumoniaePenicillin-Binding ProteinsPneumococcal InfectionsMuramoylpentapeptide CarboxypeptidasePenicillin VHexosyltransferasesPeptidyl TransferasesAnti-Bacterial AgentsMicrobial Sensitivity TestsSerotypingDrug Resistance, MicrobialDrug Resistance, BacterialPoint MutationMutationPenicillin G ProcainePenicillinaseMutation, MissensePenicillin AmidaseNeisseria gonorrhoeaeBacterial ProteinsAminoacyltransferasesLactamsPenicillin G BenzathineDrug ResistanceCarrier ProteinsDrug Resistance, MultipleMolecular Sequence DataStreptococcal InfectionsDrug Resistance, Multiple, BacterialErythromycinTransformation, BacterialPneumococcal Vaccinesbeta-LactamasesDNA, BacterialNasopharynxAmpicillinMacrolidesCefotaximeGenes, BacterialBase Sequencebeta-LactamsPolymerase Chain ReactionOxacillinStreptococcusTetracyclineFrameshift MutationAmino Acid SequencePlasmidsPneumonia, PneumococcalTransformation, GeneticElectrophoresis, Gel, Pulsed-FieldDrug Resistance, NeoplasmMoraxella (Branhamella) catarrhalisEscherichia coliR FactorsCarrier StateStaphylococcus aureusStaphylococcusSequence Analysis, DNAGerm-Line MutationNeisseria meningitidisDrug Resistance, ViralSpainDNA FingerprintingMolecular EpidemiologyRespiratory Tract InfectionsGenotypeHaemophilus influenzaeDisease ResistanceBacterial Typing TechniquesCulture MediaCommunity-Acquired InfectionsPedigreeBacteremiaVascular ResistanceCephalosporinsPhenotypeBacteriaPeptidoglycan Glycosyltransferasebeta-Lactam ResistanceAllelesMutation RateAmino Acid SubstitutionSerine-Type D-Ala-D-Ala CarboxypeptidaseTetracycline ResistanceAmpicillin ResistanceCloning, MolecularMutagenesis, Site-DirectedHeterozygoteExonsDNA Mutational AnalysisDNA PrimersMutagenesisCell LinePeptidoglycanSequence Homology, Amino AcidCeftriaxone