Comprehensive molecular epidemiology of BVDV in yaks (Bos gruniens) in Qinghai, China: high prevalence and dominance of BVDV-1u

文献类型： 外文期刊

第一作者： Li, Zhi

作者： Li, Zhi;Han, Yuan;Fu, Yong;Yuan, Qing;Wang, Shuqin;Meng, Ru;Pan, Xingye;Xue, Wanchao;Yin, Hong;Gao, Shandian

作者机构：

关键词： Bovine Viral Diarrhea Virus; yak (Bos grunniens); prevalence; phylogenetic analysis; subgenotypes

期刊名称：FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY （ 影响因子：4.8； 五年影响因子：5.5 ）

ISSN： 2235-2988

年卷期： 2025 年 15 卷

页码：

收录情况： SCI

摘要： Introduction: Bovine viral diarrhea virus (BVDV) is a major pathogen affecting livestock health in China. However, the current epidemiological status in yaks (Bos grunniens), particularly in Qinghai Province, remains insufficiently understood. Methods: In the present study, a comprehensive serological and molecular investigation of BVDV in yaks was conducted across broad geographic areas of eight administrative regions including Yushu, Guoluo, Huangnan, Hainan, Haidong, Haixi, Haibei, and Xining in Qinghai Province. Results: The results revealed widespread BVDV exposure in Qinghai yak, with an overall antibody prevalence of 84.52% (1158/1370) and substantial herd variation (12.00 similar to 98.07%). Active infections were confirmed through antigen detection, revealing prevalence ranging from 0.34% (Haixi) to 4.90% (Huangnan). Genetic characterization identified two circulating subgenotypes: BVDV-1a (n=3) and the predominant BVDV-1u (n=30), with the latter dominating across all regions. Discussion: These results highlight the endemic circulation of BVDV in Qinghai yak populations and uncover unexpected genetic diversity, emphasizing the need for control measures to mitigate the adverse impacts of BVDV infection in yaks in high-altitude pastoral systems.

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