Coxiella burnetiiis widespread in ticks (Ixodidae) in the Xinjiang areas of China

文献类型： 外文期刊

第一作者： Ni, Jun

作者： Ni, Jun;Xu, Xiaofeng;Ren, Qiaoyun;Luo, Jin;Chen, Ze;Tan, Yangchun;Guo, Junhui;Liu, Wenge;Qu, Zhiqiang;Wu, Zegong;Wang, Jinming;Li, Youquan;Guan, Guiquan;Luo, Jianxun;Yin, Hong;Liu, Guangyuan;Lin, Hanliang;Aizezi, Malike;Luo, Yi;Ma, Zhan;Yin, Hong

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关键词： Coxiella burnetii; Ticks; Ixodidae; Q fever

期刊名称：BMC VETERINARY RESEARCH （ 影响因子：2.741； 五年影响因子：2.955 ）

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年卷期： 2020 年 16 卷 1 期

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收录情况： SCI

摘要： Background The gram-negativeCoxiella burnetiibacterium is the pathogen that causes Q fever. The bacterium is transmitted to animals via ticks, and manure, air, dead infected animals, etc. and can cause infection in domestic animals, wild animals, and humans. Xinjiang, the provincial-level administrative region with the largest land area in China, has many endemic tick species. The infection rate ofC. burnetiiin ticks in Xinjiang border areas has not been studied in detail. Results For the current study, 1507 ticks were collected from livestock at 22 sampling sites in ten border regions of the Xinjiang Uygur Autonomous region from 2018 to 2019.C. burnetiiwas detected in 205/348 (58.91%)Dermacentor nuttalli; in 110/146 (75.34%)D. pavlovskyi; in 66/80 (82.50%)D. silvarum; in 15/32 (46.90%)D. niveus; in 28/132 (21.21%)Hyalomma rufipes; in 24/25 (96.00%)H. anatolicum; in 219/312 (70.19%)H. asiaticum; in 252/338 (74.56%)Rhipicephalus sanguineus; and in 54/92 (58.70%)Haemaphysalis punctata. Among these samples,C. burnetiiwas detected inD. pavlovskyifor the first time. The infection rate ofRhipicephaluswas 74.56% (252/338), which was the highest among the four tick genera sampled, whereas the infection rate ofH. anatolicumwas 96% (24/25), which was the highest among the nine tick species sampled. A sequence analysis indicated that 63 16S rRNA sequences could be found in four newly established genotypes: MT498683.1 (n = 18), MT498684.1 (n = 33), MT498685.1 (n = 6), and MT498686.1 (n = 6). Conclusions This study indicates that MT498684.1 might represent the mainC. burnetiigenotype in the ticks in Xinjiang because it was detected in eight of the tick species studied. The high infection rate ofC. burnetiidetected in the ticks found in domestic animals may indicate a high likelihood of Q fever infection in both domestic animals and humans.

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