JC virus as a marker of human migration to the Americas

JC virus is a ubiquitous human polyomavirus present in populations worldwid e. Seven genotypes differing in DNA sequence by similar to1-3% characterize three Old World population groups (African, European and Asian) as well as Oceania. It is possible to follow Old World populations into the New World by the JC virus genotypes they carried. The first population to settle in the Americas, the Native Americans, brought with them type 2A from northeas t Asia. European settlers arriving after Columbus carried primarily type 1 and type 4. Africans brought by the slave trade carried type 3 and type 6. (C) 2000 Editions scientifiques er medicales Elsevier SAS.