AIDS SerodiagnosisHIV InfectionsBotswanaDiagnostic Tests, RoutineMass ScreeningHIV SeropositivityCenters for Disease Control and Prevention (U.S.)CounselingAmbulatory Care FacilitiesPatient Acceptance of Health CareHospitals, RuralUgandaCommunity Health CentersSexual BehaviorUnited StatesInfectious Disease Transmission, VerticalHealth Knowledge, Attitudes, PracticePregnancy Complications, InfectiousPrevalenceCross-Sectional StudiesPractice Guidelines as TopicGuideline AdherenceHIV SeroprevalenceAttitude of Health PersonnelHIV SeronegativityHIV-1Anti-HIV AgentsHIV AntigensAcquired Immunodeficiency SyndromeHIV Protease InhibitorsHomosexuality, MaleCD4 Lymphocyte CountRisk-TakingSouth AfricaAnti-Retroviral AgentsHIV Core Protein p24HIV Reverse TranscriptaseViral LoadHIV Envelope Protein gp120Sexual PartnersSubstance Abuse, IntravenousReceptors, HIVHIV ProteaseRisk FactorsSensitivity and SpecificityZimbabweCondomsAIDS-Related Opportunistic InfectionsHIV Long-Term SurvivorsUnsafe SexPregnancyProspective StudiesVoluntary ProgramsCoinfectionTime FactorsRetrospective StudiesMalawiProstitutionCohort StudiesHIV EnteropathyQuestionnairesAfrica South of the SaharaTreatment OutcomeHIV Envelope Protein gp41Safe SexIncidenceZambiaInfant, NewbornEpidemicsAIDS Dementia ComplexSyphilisPopulation SurveillanceCircumcision, MaleRNA, ViralHeterosexualityCD4-Positive T-LymphocytesReproducibility of ResultsIndiaInterviews as TopicHIV Fusion InhibitorsTuberculosisHIV Wasting SyndromeHepatitis CFollow-Up StudiesHIV Integrase InhibitorsSocial StigmaStereotypingSex WorkersVirus ReplicationTanzaniaHIV-2Socioeconomic FactorsRural PopulationHomosexualityDrug Resistance, ViralPrisonersDeveloping CountriesLogistic ModelsReagent Kits, DiagnosticRisk Reduction Behavior