Pneumococcal InfectionsStreptococcus pneumoniaeMeningitisMeningitis, PneumococcalMeningitis, BacterialPneumonia, PneumococcalPneumococcal VaccinesMeningitis, AsepticStreptolysinsMeningitis, ViralMeningitis, FungalVaccines, ConjugateMeningitis, HaemophilusMeningitis, MeningococcalBacteremiaMeningitis, CryptococcalSerotypingAntibodies, BacterialBacterial VaccinesTuberculosis, MeningealPenicillin ResistancePolysaccharides, BacterialCerebrospinal FluidNasopharynxVaccinationPhosphorylcholinePenicillinsAnti-Bacterial AgentsBacterial ProteinsBacterial CapsulesMeningitis, ListeriaAdministration, IntranasalAntigens, BacterialSplenectomyMicrobial Sensitivity TestsMeningitis, Escherichia coliComplement C4Community-Acquired InfectionsSepsisLungCarrier StateOtitis MediaImmunoglobulin GOpsonin ProteinsAnemia, Sickle CellImmunizationMice, Inbred BALB CImmunization, PassiveMice, Inbred CBASpinal PunctureDrug Resistance, BacterialEchovirus InfectionsInfant, NewbornComplement System ProteinsIncidenceDrug Resistance, MicrobialDisease SusceptibilityPopulation SurveillanceMice, Inbred C57BLNeisseria meningitidisDisease Models, AnimalPneumoniaVirulenceAngiostrongylus cantonensisPhagocytosisProspective StudiesTime FactorsDNA, BacterialEnzyme-Linked Immunosorbent AssayCeftriaxoneCerebrospinal Fluid ProteinsAge FactorsNigerMice, KnockoutRisk FactorsStreptococcal InfectionsMeningesSpleenNeisseria meningitidis, Serogroup ACytokinesHaemophilus influenzaeMeningoencephalitisStreptococcus agalactiae