PneumoniaFeverPneumonia, BacterialPneumonia, ViralPneumonia, PneumococcalCryptogenic Organizing PneumoniaQ FeverPneumonia, PneumocystisPneumonia, StaphylococcalPneumonia, Ventilator-AssociatedYellow FeverTyphoid FeverPneumonia, AspirationCommunity-Acquired InfectionsPneumonia, MycoplasmaFever of Unknown OriginPneumonia, LipidRheumatic FeverLung Diseases, InterstitialRift Valley FeverHemorrhagic Fevers, ViralLassa FeverLungAnti-Bacterial AgentsHemorrhagic Fever, CrimeanIdiopathic Interstitial PneumoniasBoutonneuse FeverHemorrhagic Fever with Renal SyndromeAfrican Swine Fever VirusStreptococcus pneumoniaeRocky Mountain Spotted FeverParatyphoid FeverClassical Swine FeverMurine pneumonia virusHemorrhagic Fever Virus, Crimean-CongoCoxiella burnetiiPneumocystis jiroveciiPneumocystisBronchoalveolar Lavage FluidLegionnaires' DiseaseAfrican Swine FeverCross InfectionMycoplasma pneumoniaeRadiography, ThoracicTrimethoprim-Sulfamethoxazole CombinationRetrospective StudiesFatal OutcomePulmonary EosinophiliaHospitalizationBronchopneumoniaProspective StudiesTreatment OutcomeHemorrhagic Fever, AmericanPneumonia, Progressive Interstitial, of SheepDisease OutbreaksBronchoalveolar LavageIntensive Care UnitsRespiration, ArtificialVentilators, MechanicalSalmonella typhiAnti-Infective AgentsBacteremiaHemorrhagic Fever, EbolaRisk FactorsAcute DiseaseSeverity of Illness IndexDenguePasteurellosis, PneumonicPseudomonas InfectionsInfluenza, HumanIncidencePneumococcal VaccinesPneumonia of Swine, MycoplasmalSevere DengueImmunocompromised HostRickettsia InfectionsLegionella pneumophilaPneumocystis cariniiEmpyemaRespiratory Tract InfectionsPhlebotomus FeverRickettsiaChild, HospitalizedAntibodies, BacterialTime FactorsLegionellaChlamydial PneumoniaAIDS-Related Opportunistic InfectionsPneumococcal InfectionsInfant, NewbornPyrogensPentamidineBronchoscopyOpportunistic InfectionsSensitivity and SpecificityTomography, X-Ray ComputedLassa virusSputumPulmonary FibrosisKlebsiella Infections