Meningitis, BacterialMeningitisMeningitis, PneumococcalMeningitis, HaemophilusMeningitis, AsepticMeningitis, MeningococcalMeningitis, ViralCerebrospinal FluidMeningitis, FungalSpinal PunctureNeisseria meningitidisTuberculosis, MeningealMeningitis, CryptococcalEpidemiologyStreptococcus pneumoniaeMeningitis, ListeriaMeningitis, Escherichia coliMolecular EpidemiologyHaemophilus influenzae type bCeftriaxoneCerebrospinal Fluid ProteinsHaemophilus influenzaeNigerAnti-Bacterial AgentsInfant, NewbornStreptococcal InfectionsSubarachnoid SpaceIncidenceLeukocytosisHaemophilus VaccinesMeningesCounterimmunoelectrophoresisEncephaloceleIntracranial PressureAmpicillinDexamethasoneCefotaximeCommunity-Acquired InfectionsMalawiTogoStreptococcus agalactiaeAcute DiseaseRetrospective StudiesMeningococcal InfectionsBacterial InfectionsSubdural EffusionNervous System DiseasesHearing TestsPopulation SurveillanceProspective StudiesNeisseria meningitidis, Serogroup ASerotypingEchovirus InfectionsMeningoencephalitisPneumococcal InfectionsCefuroximeStreptococcus suisAstheniaBlood-Brain BarrierRisk FactorsCranial Nerve DiseasesHearing LossSeizuresVietnamAdjuvants, PharmaceuticComaAlcoholicsConsciousness DisordersDiuretics, OsmoticCephalosporinsHaemophilus InfectionsYemenGeography, MedicalBacteriaPrevalenceBurkina FasoAngiostrongylus cantonensisDrug Therapy, CombinationSeasonsDisease OutbreaksAge Distribution