Syphilis SerodiagnosisSyphilisSyphilis, CongenitalSerologic TestsSyphilis, CutaneousTreponema pallidumSyphilis, LatentEnzyme-Linked Immunosorbent AssayAntibodies, BacterialReaginsSensitivity and SpecificityNeurosyphilisSyphilis, CardiovascularAntigens, BacterialYawsImmunoglobulin MAntibodies, HelminthHemagglutination TestsAntigens, HelminthImmunoglobulin GAntigens, ProtozoanAntibodies, ProtozoanEvaluation Studies as TopicAgglutination TestsTreponema Immobilization TestLyme DiseaseBorrelia burgdorferi GroupAntitreponemal AgentsComplement Fixation TestsPregnancy Complications, InfectiousFluorescent Treponemal Antibody-Absorption TestRisk AssessmentChancreReagent Kits, DiagnosticCross ReactionsRecombinant ProteinsDourineSexually Transmitted DiseasesReproducibility of ResultsLeishmaniasis, VisceralFalse Positive ReactionsLeishmania infantumHomosexuality, MaleGlandersImmunoblottingPenicillin G ProcaineAntibodies, ViralAntibodies, FungalToxoplasmosisGonorrheaDog DiseasesHIV InfectionsGnathostomiasisParasitologyFluorescent Antibody TechniqueFascioliasisClonorchis sinensisEchinococcosis, PulmonaryReagent StripsPregnancyClonorchiasisLeptospirosisFasciolaPrevalenceLatex Fixation TestsAntigens, FungalClinical Laboratory TechniquesImmunoassayImmunoenzyme TechniquesCentral Nervous System Parasitic InfectionsMass ScreeningSeroepidemiologic StudiesProstitutionTaenia soliumLiver Abscess, AmebicVeterinary MedicineBabesiaCounterimmunoelectrophoresisSex WorkersBurkholderia malleiBorreliaPrenatal CarePredictive Value of TestsNeosporaEhrlichiosisPeriostitisCysticercusChagas DiseaseToxocariasisAntibody SpecificityUlcerTreponemal InfectionsFlocculation TestsMelioidosisFasciola hepaticaLeptospiraTabes DorsalisRisk FactorsInfant, NewbornTime Factors