Characterization of a New Simian T-Lymphotropic Virus Type 1 (STLV-1) in a Wild Living Chimpanzee ( Pan troglodytes verus ) from Ivory Coast: Evidence of a New STLV-1 Group?

A new strain of simian T-lymphotropic virus type 1 in blood samples from a chimpanzee that lived in the tropical rainforest of Ivory Coast is described. The sequence obtained from the long terminal repeat region of the genome is significantly divergent from all known human and nonhuman primate T-lymphotropic virus type 1 strains (96.3% homology to the closest related strains from Central African subtype B) and clusters with none of the established clades. The tax sequences reveal two sequence differences that seem to be unique as they are not found in any of the HTLV-1 or STLV-1 tax sequences from the public databases.