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Genetic diversity and evolution of Hantaan virus in China and its neighbors

By Naizhe Li, Aqian Li, Yang Liu, Wei Wu, Chuan Li, Dongyang Yu, Yu Zhu, Jiandong Li, Dexin Li, Shiwen Wang, Mifang Liang

Posted 28 Jan 2020
bioRxiv DOI: 10.1101/2020.01.28.922724 (published DOI: 10.1371/journal.pntd.0008090)

Backgroud Hantaan virus (HTNV) , as one of the pathogenic hantaviruses of HFRS, has raised serious concerns in Eurasia. China and its neighbors, especially Russia and South Korea, are seriously suffered HTNV infections. Methodology and Principal Findings To better understand HTNV genetic diversity and dynamics, we analyzed all available complete sequences derived from the S and M segments with bio-informatic tools. Our study revealed 11 phylogroups and sequences showed obvious geographic clustering. We found 42 significant amino acid variants sites and 18 of them located in immune epitopes. Nine recombination events and seven reassortment isolates were deteced in our study. Sequences from Guizhou were highly genetic divergent, characterized by the emergence of multiple lineages, recombination and reassortment events. We found that HTNV probably emerged in Zhejiang about 1,000 years ago and the population size expanded from 1980s to 1990s. Bayesian stochastic search variable selection analysis revealed that Heilongjiang, Shaanxi and Guizhou played important roles in HTNV evolution and migration. Conclusions/Significance These findings reveal the original and evolution features of HTNV which might assist in understanding Hantavirus epidemics and would be useful for disease prevention and control.

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