BacteremiaPneumoniaPneumonia, BacterialPneumonia, PneumococcalPneumonia, ViralCryptogenic Organizing PneumoniaPneumonia, PneumocystisPneumonia, StaphylococcalCommunity-Acquired InfectionsAnti-Bacterial AgentsPneumonia, Ventilator-AssociatedPneumonia, AspirationGram-Negative Bacterial InfectionsSepsisStaphylococcal InfectionsPneumonia, MycoplasmaCross InfectionPneumonia, LipidGram-Positive Bacterial InfectionsBloodStreptococcus pneumoniaeStaphylococcus aureusLung Diseases, InterstitialRetrospective StudiesPneumococcal InfectionsPseudomonas InfectionsMethicillin-Resistant Staphylococcus aureusLungCatheters, IndwellingVancomycinKlebsiella InfectionsCatheterization, Central VenousMicrobial Sensitivity TestsStreptococcal InfectionsGram-Negative BacteriaProspective StudiesTreatment OutcomeActinomycetales InfectionsEscherichia coli InfectionsIdiopathic Interstitial PneumoniasEndocarditis, BacterialCatheter-Related InfectionsIntensive Care UnitsRisk FactorsKlebsiella pneumoniaeDrug Resistance, BacterialImmunocompromised HostTrimethoprim-Sulfamethoxazole CombinationMethicillin ResistanceEnterobacteriaceae InfectionsAnti-Infective AgentsFeverHospitalizationAcinetobacter InfectionsIncidenceMurine pneumonia virusHaemophilus InfectionsRadiography, ThoracicPneumocystis jiroveciiPseudomonas aeruginosaFatal OutcomePneumocystisVancomycin ResistanceInfant, NewbornBronchoalveolar Lavage FluidBacteriological TechniquesGram-Positive BacteriaEnterococcusLegionnaires' DiseaseCohort StudiesPneumococcal VaccinesMycoplasma pneumoniaeAntibiotic ProphylaxisEquipment ContaminationCellulitisTime FactorsAIDS-Related Opportunistic InfectionsBacteriaDNA, BacterialSalmonella InfectionsOpportunistic InfectionsBacterial Typing TechniquesHospitals, UniversityAntibodies, BacterialNeutropeniaPulmonary EosinophiliaRespiration, ArtificialBartonella InfectionsDaptomycinBronchopneumoniaEmpyemaBartonella quintanaDrug Therapy, CombinationSeverity of Illness IndexViridans StreptococciDrug Resistance, Multiple, BacterialAcinetobacter baumanniiStaphylococcusPneumonia, Progressive Interstitial, of SheepColony Count, Microbial