CercopithecusCercopithecus aethiopsErythrocebus patasMonkey DiseasesHaplorhiniCercopithecinaeGenes, vpuCameroonPhylogenySimian immunodeficiency virusSpecies SpecificityCercocebusSimian T-lymphotropic virus 3Yaba monkey tumor virusPrimatesDeltaretrovirus InfectionsSimian T-lymphotropic virus 1Simian Acquired Immunodeficiency SyndromeAnimals, Wild