HIV InfectionsHIV SeropositivityTruth DisclosureHIV SeronegativitySexual PartnersAIDS SerodiagnosisHomosexuality, MaleSouth AfricaSexual BehaviorHIV SeroprevalenceUnsafe SexSelf DisclosureMalawiRisk-TakingZimbabweNutritional StatusInfectious Disease Transmission, VerticalCross-Sectional StudiesUgandaAnti-HIV AgentsSocial StigmaPrevalenceHIV SerosortingAnti-Retroviral AgentsNamibiaDisclosureCounselingZambiaSwazilandCondomsRisk FactorsCote d'IvoireHIV-1Pregnancy Complications, InfectiousAcquired Immunodeficiency SyndromeCD4 Lymphocyte CountHealth Knowledge, Attitudes, PracticeVoluntary ProgramsSubstance Abuse, IntravenousHealth StatusBisexualitySocioeconomic FactorsTanzaniaSafe SexStereotypingRural PopulationKenyaCoinfectionPregnancyAnonymous TestingChild, OrphanedQuestionnairesAIDS-Related Opportunistic InfectionsBotswanaAntitreponemal AgentsPatient Acceptance of Health CareInterviews as TopicLogistic ModelsCohort StudiesStatus EpilepticusTuberculosisViral LoadHeterosexualityUnited StatesEducational StatusAfrica South of the SaharaNew York CityUrban PopulationProspective StudiesHIV AntigensRwandaTuberculosis, PulmonaryAntitubercular AgentsPrejudiceSubstance-Related DisordersMultivariate AnalysisEthiopiaRetrospective StudiesMass ScreeningSpousesEpidemicsLos AngelesMozambiqueQualitative ResearchTreatment OutcomeLongitudinal StudiesHIV Protease InhibitorsSocial SupportAntiretroviral Therapy, Highly ActiveCameroonRural HealthFamily CharacteristicsInfant, NewbornBaltimoreTuberculosis, Multidrug-ResistantSex FactorsConfidentialityMothersIncidenceAge Factors