Opportunistic InfectionsAIDS-Related Opportunistic InfectionsAcquired Immunodeficiency SyndromeHIV InfectionsPneumonia, PneumocystisCD4 Lymphocyte CountAntiretroviral Therapy, Highly ActiveImmune Reconstitution Inflammatory SyndromeImmunocompromised HostT-Lymphocytopenia, Idiopathic CD4-PositiveMycobacterium avium-intracellulare InfectionAnti-HIV AgentsToxoplasmosis, CerebralMeningitis, CryptococcalMycosesCytomegalovirus InfectionsLymphoma, AIDS-RelatedSarcoma, KaposiHIV-1HIVAnti-Retroviral AgentsCryptococcosisMicrosporidiosisAIDS Dementia ComplexHistoplasmosisPneumocystis jiroveciiNocardia InfectionsPneumocystis InfectionsLymphopeniaHIV SeropositivityCandidiasis, OralCytomegalovirus RetinitisLung Diseases, ParasiticToxoplasmosisPneumocystisCandidiasisNamibiaLeukoencephalopathy, Progressive MultifocalAntifungal AgentsImmunologic Deficiency SyndromesImmunosuppressive AgentsHerpes ZosterHomosexualityMedicine, African TraditionalViral LoadTuberculosisCD4-Positive T-LymphocytesPneumocystis cariniiBacterial InfectionsRetroviruses, SimianInfectionMycobacterium InfectionsParasitic DiseasesMycobacterium avium ComplexOrgan TransplantationTrimethoprim-Sulfamethoxazole CombinationThymic Factor, CirculatingCryptosporidiosisProtozoan InfectionsMucormycosisTuberculosis, PulmonaryFatal OutcomeCentral Nervous System InfectionsHIV Wasting SyndromeImmunosuppressionDrug Therapy, CombinationIncidenceCryptococcusMicrosporidaRetrospective StudiesCoccidioidomycosisEncephalitozoon cuniculiTreatment OutcomeVirus DiseasesCohort StudiesDermatomycosesCoinfectionEncephalitozoonosisAspergillosisDermatomyositisTime FactorsSimian Acquired Immunodeficiency SyndromePolymyositisChemopreventionSouth AfricaIndiaRetroviridae InfectionsZidovudineCladribineEthnobotanyMycobacterium Infections, NontuberculousAnti-Infective AgentsAmphotericin BAIDS-Related ComplexSimian immunodeficiency virusAIDS VaccinesLymphatic DiseasesLeukocyte CountHIV SeronegativityAntibodies, Neoplasm