title: Genomic sequencing of deer tick virus and phylogeny of powassan-related viruses of North America.
abstract: Powassan (POW) virus is responsible for central nervous system infection in humans in North America and the eastern parts of Russia. Recently, a new flavivirus, deer tick (DT) virus, related to POW virus was isolated in the United States, but neither its pathogenic potential in human nor the taxonomic relationship with POW virus has been elucidated. In this study, we obtained the near-full-length genomic sequence of the DT virus and complete sequences of 3 genomic regions of 15 strains of POW-related virus strains. The phylogeny revealed 2 lineages, one of which had the prototype POW virus and the other DT virus. Both lineages can cause central nervous system infection in humans. By use of the combination of molecular definition of virus species within the genus Flavivirus and serological distinction in a 2-way cross-neutralization test, the lineage of DT virus is classified as a distinct genotype of POW virus.
authors.affiliation: Division of Vector-Borne Infectious Diseases, National Institute of Infectious Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado 80522, USA. gok1@cdc.gov
authors.forename: G
authors.initials: G
authors.lastname: Kuno
authors.forename: H
authors.initials: H
authors.lastname: Artsob
authors.forename: N
authors.initials: N
authors.lastname: Karabatsos
authors.forename: K R
authors.initials: KR
authors.lastname: Tsuchiya
authors.forename: G J
authors.initials: GJ
authors.lastname: Chang
mesh_terms: D020413:3' Untranslated Regions / Q000737:chemistry; D000595:Amino Acid Sequence; D001483:Base Sequence; D004669:Encephalitis Viruses, Tick-Borne / Q000145:classification*; D005416:Flavivirus / Q000145:classification* / Q000235:genetics; D008969:Molecular Sequence Data; D009500:Neutralization Tests; D010802:Phylogeny
chemical_list: D020413:3' Untranslated Regions