Pneumococcal InfectionsStreptococcus pneumoniaePneumonia, PneumococcalPneumococcal VaccinesBacterial InfectionsMeningitis, PneumococcalStreptolysinsVaccines, ConjugateBacteremiaAntibodies, BacterialSerotypingBacterial VaccinesPenicillin ResistancePolysaccharides, BacterialNasopharynxVaccinationAnti-Bacterial AgentsPhosphorylcholineBacterial ProteinsPenicillinsAdministration, IntranasalBacterial CapsulesAntigens, BacterialSplenectomySepsisLungMicrobial Sensitivity TestsComplement C4Community-Acquired InfectionsOpsonin ProteinsMice, Inbred BALB CImmunoglobulin GMice, Inbred C57BLOtitis MediaCarrier StateImmunizationAnemia, Sickle CellDisease SusceptibilityImmunization, PassiveDrug Resistance, BacterialPhagocytosisMice, Inbred CBAPneumoniaComplement System ProteinsDrug Resistance, MicrobialDisease Models, AnimalGram-Negative Bacterial InfectionsMice, KnockoutVirulenceProspective StudiesTime FactorsIncidenceListeriosisCytokinesEnzyme-Linked Immunosorbent AssaySpleenInfant, NewbornPopulation SurveillanceDNA, BacterialGram-Positive Bacterial InfectionsCalcitoninImmunity, InnateRisk FactorsAge FactorsFeverNeutrophilsListeria monocytogenesBacteriaVirus DiseasesStaphylococcus aureusPneumonia, BacterialLipopolysaccharides