PneumoniaBacteriaPneumonia, BacterialPneumonia, ViralPneumonia, PneumococcalCryptogenic Organizing PneumoniaPneumonia, PneumocystisPneumonia, StaphylococcalGram-Negative BacteriaGram-Positive BacteriaPneumonia, Ventilator-AssociatedPneumonia, AspirationBacteria, AnaerobicCommunity-Acquired InfectionsPneumonia, MycoplasmaAnti-Bacterial AgentsPneumonia, LipidRNA, Ribosomal, 16SDNA, BacterialBacteria, AerobicBacterial ProteinsMolecular Sequence DataPhylogenyLung Diseases, InterstitialEscherichia coliDNA, RibosomalLungSequence Analysis, DNAWater MicrobiologyStreptococcus pneumoniaeColony Count, MicrobialIdiopathic Interstitial PneumoniasGram-Negative Aerobic BacteriaGram-Negative Anaerobic BacteriaBacterial Physiological PhenomenaSoil MicrobiologyPseudomonas aeruginosaGenes, BacterialLegionnaires' DiseaseRNA, BacterialMurine pneumonia virusSulfur-Reducing BacteriaGene Expression Regulation, BacterialPneumocystis jiroveciiCross InfectionCulture MediaSeawaterBronchoalveolar Lavage FluidMicrobial Sensitivity TestsPneumocystisAnti-Infective AgentsMycoplasma pneumoniaeGenome, BacterialStaphylococcus aureusRadiography, ThoracicGenes, rRNABacterial AdhesionAnaerobiosisSymbiosisSpecies SpecificityAmino Acid SequenceBase SequencePseudomonas InfectionsBase CompositionBacteriological TechniquesEnterobacteriaceaeBronchopneumoniaBiodegradation, EnvironmentalPseudomonasTrimethoprim-Sulfamethoxazole CombinationGram-Negative Bacterial InfectionsLegionella pneumophilaPulmonary EosinophiliaPolymerase Chain ReactionBacterial Typing TechniquesHospitalizationVirulenceKlebsiella pneumoniaeBiofilmsFresh WaterPneumonia, Progressive Interstitial, of SheepVentilators, MechanicalIntensive Care UnitsBronchoalveolar LavageGammaproteobacteriaBacteremiaRespiration, ArtificialRetrospective StudiesBacterial LoadProspective StudiesTime FactorsBacterial InfectionsDrug Resistance, BacterialFermentationGeologic SedimentsProteobacteriaLegionellaBacteroidesAerobiosisMicrobial Viability