PneumoniaMacrolidesPneumonia, BacterialPneumonia, PneumococcalPneumonia, ViralErythromycinAnti-Bacterial AgentsLeucomycinsCryptogenic Organizing PneumoniaPneumonia, PneumocystisAzithromycinPneumonia, StaphylococcalTylosinPneumonia, MycoplasmaCommunity-Acquired InfectionsPneumonia, Ventilator-AssociatedPneumonia, AspirationOleandomycinRoxithromycinDrug Resistance, BacterialStreptococcus pneumoniaeJosamycinClarithromycinLincosamidesMicrobial Sensitivity TestsSpiramycinPneumonia, LipidStreptomycesKetolidesRNA, Ribosomal, 23SPolyenesMycoplasma pneumoniaeStreptococcus pyogenesLung Diseases, InterstitialStreptococcal InfectionsClindamycinStreptograminsDrug Resistance, MicrobialLungStreptogramin BMicromonosporaLactonesCandicidinIdiopathic Interstitial PneumoniasMethyltransferasesRespiratory Tract InfectionsLegionnaires' DiseaseMurine pneumonia virusBronchoalveolar Lavage FluidPneumocystis jiroveciiVirginiamycinPneumocystisCross InfectionBronchiolitisBacterial ProteinsTrimethoprim-Sulfamethoxazole CombinationRadiography, ThoracicDrug Resistance, Multiple, BacterialGenes, BacterialAnti-Infective AgentsDNA, BacterialHaemophilus influenzaeHospitalizationRetrospective StudiesPharyngitisPulmonary EosinophiliaFermentationHaemophilus InfectionsPseudomonas InfectionsLincomycinBronchopneumoniaProspective StudiesStreptomyces antibioticusMolecular StructureTreatment OutcomeMannheimia haemolyticaStaphylococcus aureusPneumonia, Progressive Interstitial, of SheepViridans StreptococciFluoroquinolonesBacteriaVentilators, MechanicalPenicillinsBronchoalveolar LavageRespiration, ArtificialBacteremiaIntensive Care UnitsAminoglycosidesSaccharopolysporaStreptococcus agalactiaeNystatinSputumAntifungal AgentsPseudomonas aeruginosaTime FactorsChlamydophila pneumoniaeMycoplasma InfectionsMolecular Sequence DataPolymerase Chain ReactionFatal Outcome