Mycoplasma pneumoniaeChlamydophila pneumoniaePneumonia, MycoplasmaChlamydophila InfectionsStreptococcus pneumoniaeKlebsiella pneumoniaeKlebsiella InfectionsChlamydia InfectionsPneumococcal InfectionsPneumonia, BacterialAnti-Bacterial AgentsAntibodies, BacterialPneumonia, PneumococcalMycoplasma InfectionsMicrobial Sensitivity TestsDrug Resistance, BacterialBacterial ProteinsAzithromycinDNA, BacterialComplement Fixation TestsMacrolidesMeningitis, PneumococcalRespiratory Tract InfectionsPolymerase Chain ReactionCommunity-Acquired InfectionsImmunoglobulin GLungImmunoglobulin ANasopharynxImmunoglobulin MAntibiotic ProphylaxisDrug Resistance, MicrobialChlamydiaErythromycinStreptolysinsSerologic TestsPenicillin ResistancePenicillinsArteriosclerosisBacteremiabeta-LactamasesAnti-Infective AgentsChlamydial PneumoniaAcute DiseaseColony Count, MicrobialAntigens, BacterialEpidemicsSerotypingChaperonin 60Leukocyte DisordersFluoroquinolonesPharynxPneumococcal VaccinesLiver AbscessCarbapenemsMycoplasmaEnzyme-Linked Immunosorbent AssayMice, Inbred C57BLDrug Resistance, Multiple, Bacterialbeta-LactamsSkin ManifestationsStevens-Johnson SyndromeDisease OutbreaksBacteriaCephalosporinsLevofloxacinBacterial InfectionsChlamydiaceae InfectionsAminoglycosidesSputumMyelitis, TransversePneumoniaEscherichia coliMolecular Sequence DataStreptomycesStreptococcal InfectionsConvalescenceAgglutination TestsGenes, BacterialAntibiotics, AntineoplasticDisease Models, AnimalMice, Inbred BALB CImmunity, InnateHLA-B35 AntigenSensitivity and SpecificityToll-Like Receptor 2Chronic DiseaseRisk FactorsGram-Negative BacteriaCefotaximeGram-Positive BacteriaCiprofloxacinbeta-Lactam ResistanceGentamicinsTime FactorsBacterial CapsulesCase-Control StudiesCryptogenic Organizing PneumoniaFluorescent Antibody TechniqueProspective Studies