Heterocyclic Compounds, Bridged-RingHIV Reverse TranscriptaseReverse Transcriptase InhibitorsRNA-Directed DNA PolymeraseHIV InfectionsHIV-1HIV SeropositivityAnti-HIV AgentsTelomeraseReverse Transcriptase Polymerase Chain ReactionRibonuclease HDrug Resistance, ViralZidovudineMolecular Sequence DataBase SequenceDideoxynucleotidesAvian myeloblastosis virusHIV SeroprevalenceRNA, ViralHIV Protease InhibitorsHIV SeronegativityTemplates, GeneticNevirapineHIV ProteaseVirus ReplicationThymine NucleotidesAcquired Immunodeficiency Syndrome