Human T Cell Lymphotropic Virus Type 1 and Human T Cell Lymphotropic Virus Type 2 Mortality in the Shipibo-Konibo People

High rates of human T cell lymphotropic virus type 1 (HTLV-1) and human T cell lymphotropic virus type 2 (HTLV-2) infections have been reported among Andean and Amazonian Peruvian indigenous populations in Peru. The Shipibo-Konibo people are the third-largest Amazonian indigenous group living in Peru. By using data from two observational studies conducted in the Shipibo-Konibo community, we estimated that the risk of all-cause death at 12 years was 3.11 times higher (95% CI: 1.58–6.10) for people with HTLV-1 infection compared with those with HTLV-2 infection or without HTLV-1 and HTLV-2 infections.