Antiretroviral Therapy, Highly ActiveHIV InfectionsAnti-HIV AgentsHIV AntibodiesAnti-Retroviral AgentsCD4 Lymphocyte CountHIV-1HIV SeropositivityViral LoadAcquired Immunodeficiency SyndromeAntibodiesAIDS SerodiagnosisHIVAIDS-Related Opportunistic InfectionsHIV SeroprevalenceAntibodies, ViralHIV Protease InhibitorsDrug Resistance, ViralVoluntary ProgramsReverse Transcriptase InhibitorsAnonymous TestingAntibody SpecificityHomosexualityRNA, ViralSouth AfricaMedication AdherenceAntibodies, NeutralizingZidovudinePregnancy Complications, InfectiousStavudineNevirapineContraceptive Devices, MaleAntibodies, MonoclonalAntibodies, BacterialBenzoxazinesCohort StudiesDrug Therapy, CombinationInfectious Disease Transmission, VerticalHIV-Associated Lipodystrophy SyndromeUgandaRitonavirCD4-Positive T-LymphocytesViremiaPatient ComplianceSexual BehaviorImmune Reconstitution Inflammatory SyndromeSubstance Abuse, IntravenousOrganophosphonatesTreatment OutcomeRisk FactorsLamivudineLopinavirHIV AntigensAntibody FormationTreatment FailureAIDS Dementia ComplexIndinavirPrevalenceHIV-2Time FactorsLost to Follow-UpMalawiDrug Resistance, Multiple, ViralCross-Sectional StudiesCoinfectionAdenineHIV Reverse TranscriptaseBotswanaPyrimidinonesRetrospective StudiesHIV SeronegativityDidanosinePregnancyAntibody AffinityProspective StudiesLymphoma, AIDS-RelatedNelfinavirDrug MonitoringAfrica South of the SaharaDirectly Observed TherapyHomosexuality, MaleZambiaDrug Administration ScheduleAIDS-Related ComplexCounselingFluorescent Antibody TechniqueHIV ProteaseRisk-TakingCote d'IvoireDideoxynucleosidesSexual PartnersCytomegalovirus RetinitisAntibodies, Anti-IdiotypicMass ScreeningBinding Sites, AntibodyTuberculosisSensitivity and SpecificityVirus ReplicationZimbabweHIV Wasting Syndrome