Penicillin ResistancePenicillinsDrug Resistance, BacterialAnti-Bacterial AgentsMicrobial Sensitivity TestsDrug Resistance, MicrobialPenicillin GStreptococcus pneumoniaeDrug Resistance, Multiple, BacterialDrug ResistancePneumococcal InfectionsDrug Resistance, MultiplePenicillin-Binding ProteinsPenicillin VDrug Resistance, NeoplasmMuramoylpentapeptide CarboxypeptidaseAnti-Infective AgentsPeptidyl TransferasesHexosyltransferasesBacterial Proteinsbeta-LactamasesNeisseria gonorrhoeaeErythromycinSerotypingMacrolidesDisease ResistanceAntimicrobial Cationic PeptidesPenicillinaseDNA, BacterialLactamsPenicillin G ProcaineTetracyclineAmpicillinMutationElectrophoresis, Gel, Pulsed-FieldDrug Resistance, ViralEscherichia coliPenicillin AmidaseStaphylococcus aureusMolecular Sequence DataVascular ResistanceGram-Negative BacteriaBacteriabeta-Lactam Resistancebeta-LactamsGenes, BacterialR FactorsTetracycline ResistancePlasmidsStreptococcal InfectionsDrug Resistance, FungalPenicillin G BenzathineStaphylococcusBacterial InfectionsAmpicillin ResistanceFluoroquinolonesAminoacyltransferasesPolymerase Chain ReactionTransformation, BacterialEnterobacteriaceaeGram-Positive BacteriaCiprofloxacinPlant DiseasesIntegronsEscherichia coli InfectionsDisk Diffusion Antimicrobial TestsBacteremiaSequence Analysis, DNACefotaximeCross InfectionSalmonellaPseudomonas aeruginosaOxacillinCommunity-Acquired InfectionsStreptococcusGram-Negative Bacterial InfectionsCarrier ProteinsMoraxella (Branhamella) catarrhalisNasopharynxMolecular EpidemiologyPneumococcal VaccinesDNA GyraseShigellaCephalosporinsGenotypeEnterococcusPhenotypeBacterial Typing TechniquesSalmonella InfectionsAmino Acid SequenceCephalosporin ResistanceRespiratory Tract InfectionsSalmonella entericaHaemophilus influenzaeConjugation, GeneticKlebsiella pneumoniaeCarrier StateBase SequenceDNA FingerprintingSpain