HIV SeropositivityHIV SeroprevalenceGenital Diseases, FemaleHIV InfectionsSubstance Abuse, IntravenousChlamydia InfectionsSexual BehaviorGenital Diseases, MaleRisk FactorsSeroepidemiologic StudiesChlamydia trachomatisChlamydia muridarumReproductive Tract InfectionsHerpes GenitalisVaginal DiseasesHerpesvirus 2, HumanVaginitisGonorrheaUterine CervicitisAntibodies, BacterialVaginaGenitalia, FemaleUterine Cervical DiseasesUrethritisSexually Transmitted DiseasesAntibodies, ViralConjunctivitis, InclusionImmunoglobulin GCervix UteriFemale Urogenital DiseasesVaginosis, BacterialCandidiasis, VulvovaginalTrichomonas InfectionsChlamydophila psittaciEnzyme-Linked Immunosorbent AssayHerpesvirus VaccinesPrevalenceLymphogranuloma VenereumChlamydophila pneumoniaeChlamydiaSalpingitisBalanitisSyphilisEndometritisRwandaChlamydophila InfectionsPapillomavirus InfectionsTrichomonas VaginitisPelvic Inflammatory DiseaseSerologic TestsImmunoglobulin AOxytetracyclineHIV SeronegativityHerpes SimplexCervix MucusPregnancy Complications, InfectiousPuerperal InfectionMycoplasma hominisGenitaliaVaginal DischargeSexual PartnersVaricellovirusVaginal SmearsHelicobacter pyloriHelicobacter InfectionsPapillomaviridaeToxocariasisPregnancyAntigens, BacterialBacterial VaccinesGuinea PigsAntibodies, ProtozoanUreaplasma urealyticumDoxycyclineCytomegalovirus InfectionsUrethraOviductsProspective StudiesRecurrenceToxoplasmosisMucous MembraneNeisseria gonorrhoeaeAcquired Immunodeficiency SyndromeCross-Sectional StudiesToxocaraAIDS SerodiagnosisVirus SheddingIncidenceHIV-1Herpesvirus 1, HumanBlood DonorsMycoplasma InfectionsHepatitis CFallopian TubesNeosporaCase-Control StudiesMice, Inbred BALB CLondonRural PopulationCytomegalovirus