Strains of JC virus in Amerind-speakers of North America (Salish) and South America (Guaraní), Na-Dene-speakers of New Mexico (Navajo), and modern Japanese suggest links through an ancestral Asian population.

Abstract excerpt

Previously we showed that strains of human polyoma virus JC among the Navajo in New Mexico, speakers of an Athapaskan language in the Na-Dene language phylum, and among the Salish people in Montana, speakers of a language of the Salishan group in the Amerind family, were mainly of a northeast Asian genotype found in Japan (type 2A). We now report partial VP1-gene, regulatory region, and complete genome sequences...

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