PneumoniaPneumonia, BacterialPneumonia, ViralPneumonia, PneumococcalCryptogenic Organizing PneumoniaPneumonia, PneumocystisPneumonia, StaphylococcalPneumonia, Ventilator-AssociatedPneumonia, AspirationCommunity-Acquired InfectionsPneumonia, MycoplasmaPneumonia, LipidLung Diseases, InterstitialLungIdiopathic Interstitial PneumoniasGenitalia, FemaleStreptococcus pneumoniaeAnti-Bacterial AgentsMurine pneumonia virusPneumocystis jiroveciiSex CharacteristicsPneumocystisBronchoalveolar Lavage FluidLegionnaires' DiseaseRadiography, ThoracicMycoplasma pneumoniaeRetrospective StudiesSex FactorsCross InfectionSexual Behavior, AnimalProspective StudiesTrimethoprim-Sulfamethoxazole CombinationPulmonary EosinophiliaRisk FactorsHospitalizationBronchopneumoniaTreatment OutcomePneumonia, Progressive Interstitial, of SheepBronchoalveolar LavageRespiration, ArtificialVentilators, MechanicalTime FactorsFatal OutcomeIntensive Care UnitsReproductionSeverity of Illness IndexIncidenceAge FactorsPneumonia of Swine, MycoplasmalPseudomonas InfectionsAnti-Infective AgentsPneumococcal VaccinesEmpyemaPneumocystis cariniiCondoms, FemaleLegionella pneumophilaInfluenza, HumanImmunocompromised HostBronchoscopyPneumococcal InfectionsCohort StudiesChild, HospitalizedLegionellaBacteremiaAIDS-Related Opportunistic InfectionsPentamidineChlamydial PneumoniaInfant, NewbornTomography, X-Ray ComputedRespiratory Tract InfectionsPasteurellosis, PneumonicPulmonary FibrosisSputumDisease Models, AnimalAcute DiseaseKlebsiella InfectionsOvariectomyFertilityPregnancyLung DiseasesCopulationKlebsiella pneumoniaePseudomonas aeruginosaOpportunistic InfectionsHaemophilus InfectionsInfertility, FemaleMating Preference, AnimalLength of StayMice, Inbred C57BLPrevalenceUnited StatesJapanSensitivity and SpecificityPneumovirus InfectionsBody WeightPneumocystis InfectionsLung AbscessSepsisFollow-Up StudiesRespiratory Insufficiency