HIV SeropositivityHIV InfectionsHIV SeroprevalenceAnti-HIV AgentsAntiretroviral Therapy, Highly ActiveAnti-Retroviral AgentsSubstance Abuse, IntravenousInterferonsHIV-1Sexual BehaviorDrug Resistance, ViralRisk FactorsCD4 Lymphocyte CountViral LoadSeroepidemiologic StudiesReverse Transcriptase InhibitorsHIV Protease InhibitorsInterferon Type IBenzoxazinesZidovudineAcquired Immunodeficiency SyndromeDrug Resistance, Multiple, ViralNevirapineHIVInfectious Disease Transmission, VerticalHIV Reverse TranscriptaseIndinavirRitonavirRNA, ViralLopinavirPregnancy Complications, InfectiousStavudineOrganophosphonatesHIV ProteaseHIV Fusion InhibitorsDrug Therapy, CombinationLamivudineNelfinavirPyrimidinonesSouth AfricaAdenineAIDS-Related Opportunistic InfectionsUgandaCohort StudiesInterferon InducersMedication AdherenceInterferon-alphaVirus ReplicationIntegrase InhibitorsReceptors, InterferonAntiviral AgentsHIV SeronegativityDidanosineHIV-Associated Lipodystrophy SyndromePrevalenceTreatment FailureAntibodies, ViralSaquinavirViremiaCD4-Positive T-LymphocytesZimbabweGenotypeInterferon-gammaTreatment OutcomeHIV Integrase InhibitorsPatient CompliancePregnancyCross-Sectional StudiesAfrica South of the SaharaAntibodies, BacterialDideoxynucleosidesImmunoglobulin Gpol Gene Products, Human Immunodeficiency VirusMutationProspective StudiesChlamydophila pneumoniaeHIV Wasting SyndromeTime FactorsEnzyme-Linked Immunosorbent AssayDrug MonitoringInterferon-betaMalawiInterferon Regulatory Factor-3Chlamydophila InfectionsDrug InteractionsInterferon Regulatory Factor-1OxazinesSerologic TestsBrazilHepatitis CCyclohexanesRetrospective StudiesDeveloping CountriesInterferon Regulatory FactorsDrug Administration ScheduleReceptor, Interferon alpha-betaInfant, NewbornGenes, polCommission on Professional and Hospital ActivitiesDrugs, Generic