HIV Core Protein p24Viral Core ProteinsHIV InfectionsNational Institute of Mental Health (U.S.)Acute DiseaseAIDS SerodiagnosisHIV-1HIV SeropositivityHIVViral LoadHIV AntibodiesRNA, ViralHomosexuality, MaleClinical Laboratory TechniquesAnti-HIV AgentsMalawiNucleic Acid Amplification TechniquesMass ScreeningViremiaEarly DiagnosisImmunoassayHIV SeroprevalencePublic HealthHIV SeronegativityCD4 Lymphocyte CountSensitivity and SpecificitySexual BehaviorAcquired Immunodeficiency SyndromeProteoglycansSouth AfricaChondroitin Sulfate ProteoglycansMolecular Sequence DataHIV AntigensPrevalenceAmino Acid SequenceHepacivirusRisk-TakingSan FranciscoAnti-Retroviral AgentsSubstance Abuse, IntravenousRisk FactorsVirus ReplicationHepatitis B Core AntigensAIDS-Related Opportunistic InfectionsSexual PartnersDiagnostic Tests, RoutineCell LineHIV Protease InhibitorsTumor Suppressor Protein p53DecorinBase SequenceUnited StatesCohort StudiesAggrecansHeparan Sulfate ProteoglycansSimian immunodeficiency virusCondomsZimbabweCD4-Positive T-LymphocytesTime FactorsProstitutionViral ProteinsAIDS Dementia ComplexGlycosaminoglycansHIV Envelope Protein gp120Antiretroviral Therapy, Highly ActiveExtracellular Matrix ProteinsUnsafe SexHeparitin SulfateHepatitis CUgandaCross-Sectional StudiesProtein BindingDNA, Viral