Human T-cell lymphotropic virus type-I (HTLV-I) was the first human retrovirus associated with malignancy. The prevalence of HTLV-I infection varies significantly in different regions of the world. In this study, the prevalence of HTLV-I infection among ethnic Jews living in Shiraz, South of Iran, was investigated. 286 blood samples were obtained. HTLV-1 antibody assay on serum samples was d...