SyphilisEconomic DevelopmentSyphilis, CongenitalChlamydia InfectionsChlamydia trachomatisSyphilis SerodiagnosisChlamydiaDisease NotificationSyphilis, CutaneousTreponema pallidumSyphilis, LatentPopulation SurveillanceChinaChlamydia muridarumChlamydophila psittaciNeurosyphilisReaginsSyphilis, CardiovascularGonorrheaLymphogranuloma VenereumChlamydophila InfectionsAntibodies, BacterialSexually Transmitted DiseasesGenital Diseases, FemalePsittacosisPregnancy Complications, InfectiousYawsSexually Transmitted Diseases, BacterialAntitreponemal AgentsUrethritisFemale Urogenital DiseasesChancreHomosexuality, MaleUterine CervicitisMass ScreeningPelvic Inflammatory DiseaseMale Urogenital DiseasesPrevalenceAzithromycinPenicillin G ProcaineProstitutionHIV InfectionsTrachomaSexual BehaviorGenital Diseases, MaleContact TracingCervix UteriTreponema Immobilization TestUrethraFluorescent Treponemal Antibody-Absorption Test