HIV SeropositivityHIV SeroprevalenceSarcoma, KaposiHIV InfectionsSubstance Abuse, IntravenousSexual BehaviorRisk FactorsDisease ProgressionSeroepidemiologic StudiesHerpesvirus 8, HumanCell DeathCause of DeathSicilyAntibodies, ViralHerpesviridae InfectionsLymphoma, Primary EffusionAcquired Immunodeficiency SyndromeGiant Lymph Node HyperplasiaAntibodies, BacterialHIV SeronegativityChlamydophila pneumoniaeImmunoglobulin GChlamydophila InfectionsDeathEnzyme-Linked Immunosorbent AssaySerologic TestsPrevalenceHIV-1CD4 Lymphocyte CountTime FactorsHelicobacter pyloriHelicobacter InfectionsCohort StudiesViral LoadAIDS-Related Opportunistic InfectionsToxocariasisCase-Control StudiesIncidenceAntibodies, ProtozoanCytomegalovirus InfectionsProspective StudiesCross-Sectional StudiesAnti-HIV AgentsRetrospective StudiesToxoplasmosisAge FactorsUgandaFollow-Up StudiesTreatment OutcomeHepatitis CCell Line, TumorHerpesvirus 2, HumanToxocaraSkin NeoplasmsAIDS SerodiagnosisDeath, Sudden, CardiacLymphoma, AIDS-RelatedDNA, ViralBlood DonorsPolymerase Chain ReactionMultivariate AnalysisPapillomavirus InfectionsHomosexuality, MaleApoptosisRural PopulationCell CycleNeosporaSignal TransductionBrazilBlotting, WesternOdds RatioCytomegalovirusUnited StatesBrain DeathHerpes GenitalisSyphilisImmunoglobulin AImmunohistochemistryToxoplasmaHuman papillomavirus 16HomosexualityViral ProteinsPrognosisImmunoglobulin MMolecular Sequence Data