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Title: Rapid Spread of Severe Fever with Thrombocytopenia Syndrome Virus by Parthenogenetic Asian Longhorned Ticks
Author: Zhang, Xing; Zhao, Chaoyue; Cheng, Chaoyuan; Zhang, Guogang; Yu, Tao; Lawrence, Kevin; Li, Hongyue; Sun, Jimin; Yang, Zeyu; Ye, Ling; Chu, Hongliang; Wang, Ying; Han, Xiaohu; Jia, Yongchao; Fan, Shuozhang; Kanuka, Hirotaka; Tanaka, Tetsuya; Jenkins, Cheryl; Gedye, Kristene; Chandra, Shona; Price, Dana C.; Liu, Qiyong; Choi, Young Ki; Zhan, Xiangjiang; Zhang, Zhibin; Zheng, Aihua
Abstract: Severe fever with thrombocytopenia syndrome virus (SFTSV) is spreading rapidly in Asia. This virus is transmitted by the Asian longhomed tick (Haemaphysalis Iongicomis), which has parthenogenetically and sexually reproducing populations. Parthenogenetic populations were found in >= 15 provinces in China and strongly correlated with the distribution of severe fever with thrombocytopenia syndrome cases. However, distribution of these cases was poorly correlated with the distribution of populations of bisexual ticks. Phylogeographic analysis suggested that the parthenogenetic population spread much faster than bisexual population because colonization is independent of sexual reproduction. A higher proportion of parthenogenetic ticks was collected from migratory birds captured at an SFTSV-endemic area, implicating the contribution to the long-range movement of these ticks in China. The SFTSV susceptibility of parthenogenetic females was similar to that of bisexual females under laboratory conditions. These results suggest that parthenogenetic Asian longhorned ticks, probably transported by migratory birds, play a major role in the rapid spread of SFTSV.
Corresponding author: Zheng,Aihua
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PubYear: 2022
Volume: 28
Issue: 2
Page: 363-372
Journal: Emerging Infectious Diseases
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