| chinese strains (type 7) of jc virus are afro-asiatic in origin but are phylogenetically distinct from the mongolian and indian strains (type 2d) and the korean and japanese strains (type 2a). | we have further characterized the asian genotypes (types 2 and 7) and subtypes of jc virus (jcv). urine samples from 224 individuals with han and mongolian populations were collected in five regions in eastern china: kunming, chengdu, shenyang, chifeng, and manzhouli. also, 99 urine samples were collected from coastal and hill groups in kerala, southern india, and 23 urine samples from seoul, korea. pcr products of four typing fragments were sequenced, including two in the vp1 gene, as well as o ... | 2004 | 15170260 |