Arthritis, ReactiveChlamydia InfectionsChlamydia trachomatisChlamydiaArthritis, InfectiousChlamydia muridarumArthritisYersinia InfectionsHLA-B27 AntigenArthritis, RheumatoidSexually Transmitted Diseases, BacterialYersinia enterocoliticaSynovial FluidGenital Diseases, FemaleChlamydophila psittaciMale Urogenital DiseasesUterine CervicitisFemale Urogenital DiseasesArthritis, ExperimentalGenital Diseases, MaleTrachomaGonorrheaAntibodies, BacterialChlamydophila pneumoniaeFallopian TubesSynovial MembraneFallopian Tube DiseasesArthritis, PsoriaticSalmonella InfectionsArthritis, JuvenileMass ScreeningSpondylarthropathiesSpondylitis, AnkylosingPrevalenceUrethritisCervix UteriAntigens, BacterialYersiniaJointsPolymerase Chain ReactionCampylobacter InfectionsLymecyclinePregnancy Complications, InfectiousRheumatic DiseasesSalmonella enteritidisImmunoglobulin AHafniaSexual BehaviorChlamydophila InfectionsImmunoglobulin GHeLa CellsEnteritisYersinia pseudotuberculosis InfectionsLymphogranuloma VenereumSensitivity and SpecificityPsittacosisOsteoarthritisRisk FactorsBacterial Outer Membrane ProteinsImmunoglobulin MRats, Inbred LewEnzyme-Linked Immunosorbent AssayKnee JointDysentery, BacillarySalmonellaPregnancyCampylobacter jejuniShigella