Cercocebus atysSimian immunodeficiency virusMonkey DiseasesSimian Acquired Immunodeficiency SyndromeCercocebusCercopithecidaeHIV-2Macaca mulattaEntomophthoralesHIV InfectionsSimian T-lymphotropic virus 1CD4-Positive T-LymphocytesViral LoadGenes, envCote d'IvoireViremiaMacaca nemestrinaGenes, gagReceptors, CCR5MacacaHIV SeropositivityPhylogenyMolecular Sequence DataPrimatesVirus ReplicationPrimate T-lymphotropic virus 3CD4 Lymphocyte CountSpecies SpecificityHIV-1T-Lymphocyte SubsetsCercopithecinaeCD8-Positive T-LymphocytesGene Products, envTheropithecusLymphocyte ActivationGene Products, gagAmino Acid SequenceImmunophenotypingDeltaretrovirus InfectionsBase SequenceRNA, ViralHIV SeroprevalenceHIV SeronegativityImmunologic MemoryCameroonFlow CytometryT-LymphocytesApe DiseasesAnimals, WildCercopithecusGenes, polT-Lymphocytes, CytotoxicGorilla gorillaAIDS Serodiagnosis