Opportunistic InfectionsAIDS-Related Opportunistic InfectionsPneumonia, PneumocystisHIV InfectionsAcquired Immunodeficiency SyndromeCD4 Lymphocyte CountAntiretroviral Therapy, Highly ActiveImmune Reconstitution Inflammatory SyndromeImmunocompromised HostT-Lymphocytopenia, Idiopathic CD4-PositiveMycobacterium avium-intracellulare InfectionAnti-HIV AgentsToxoplasmosis, CerebralMeningitis, CryptococcalMycosesCytomegalovirus InfectionsLymphoma, AIDS-RelatedSarcoma, KaposiCryptococcosisMicrosporidiosisHIV-1Pneumocystis jiroveciiAnti-Retroviral AgentsHistoplasmosisHIVNocardia InfectionsAIDS Dementia ComplexPneumocystis InfectionsLymphopeniaLung Diseases, ParasiticCandidiasis, OralToxoplasmosisCandidiasisPneumocystisCytomegalovirus RetinitisLeukoencephalopathy, Progressive MultifocalNamibiaHIV SeropositivityImmunologic Deficiency SyndromesImmunosuppressive AgentsAntifungal AgentsHerpes ZosterMedicine, African TraditionalPneumocystis cariniiTuberculosisBacterial InfectionsRetroviruses, SimianInfectionParasitic DiseasesMycobacterium InfectionsViral LoadCD4-Positive T-LymphocytesOrgan TransplantationHomosexualityThymic Factor, CirculatingTrimethoprim-Sulfamethoxazole CombinationMycobacterium avium ComplexMucormycosisProtozoan InfectionsCryptosporidiosisTuberculosis, PulmonaryCentral Nervous System InfectionsFatal OutcomeImmunosuppressionDrug Therapy, CombinationCoccidioidomycosisCryptococcusHIV Wasting SyndromeEncephalitozoon cuniculiMicrosporidaIncidenceVirus DiseasesRetrospective StudiesDermatomycosesTreatment OutcomeDermatomyositisCoinfectionAspergillosisEncephalitozoonosisPolymyositisCohort StudiesChemopreventionCladribineEthnobotanyRetroviridae InfectionsMycobacterium Infections, NontuberculousAmphotericin BAnti-Infective AgentsTime FactorsIndiaAntibodies, NeoplasmAntiprotozoal AgentsLeukocyte CountLymphatic DiseasesSimian Acquired Immunodeficiency SyndromeAntibodies, MonoclonalPenicilliumSouth AfricaZidovudineHIV Seronegativity