[The possible transpacific travel of the adult T-cell leukemia virus I]

Genetical and archeological similarities in both Japanese and South American populations have been described. These facts along with the recent seroepidemiological studied on retroviruses performed in some of those racial groups, and published up to 1993, allow us to suggest that these retroviruses likely arrived to South America, not only from Africa, but also from The Far East since 6000 years ago or earlier. It could occur following the sea-currents directly.