Epizootiological surveillance of porcine circoviruses in free-ranging wild boars in China  

作　　者：Wenjie Gong Haiying Du Tong Wang Heting Sun Peng Peng Siyuan Qin Haidong Geng Zheng Zeng Wangwang Liang Hongquan Ling Changchun Tu Zhongzhong Tu 

机构地区：[1]State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases,Key Laboratory for Zoonosis Research of the Ministry of Education,Institute of Zoonosis,and College of Veterinary Medicine,Jilin University,Changchun,130062,China [2]Changchun Veterinary Research Institute,Chinese Academy of Agricultural Sciences,Changchun,130122,China [3]Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses,Yangzhou University,Yangzhou,225009,China [4]Biological Disaster Control and Prevention Center,National Forestry and Grassland Administration,Shenyang,110034,China [5]Chongqing Animal Disease Prevention and Control Center,Chongqing,401120,China

出　　处：《Virologica Sinica》2023年第5期663-670,共8页中国病毒学（英文版）

基　　金：This work was supported by grants from the National Natural Science Foundation of China to Z Tu(31902307);National Key Research and Development Program of China to C Tu(2017YFD0500104);Wildlife Borne Infectious Diseases Monitoring Project of the State Forestry and Grassland Administration of China.

摘　　要：Four species of porcine circoviruses(PCV1–4)have been reported to circulate in Chinese domestic pigs,while the epizootiology of these viruses in free-ranging wild boars in China remains unknown.In this study,tissue and serum samples collected from diseased or apparently healthy wild boars between 2018 and 2020 in 19 regions of China were tested for the prevalence of PCV1–4 infections.Positive rates of PCV1,PCV2,and PCV3 DNA in the tissue samples of Chinese wild boars were 1.6%(4/247),58.3%(144/247),and 10.9%(27/247)respectively,with none positive for PCV4.Sequence analysis of viral genome showed that the four PCV1 strains distributed in Hunan and Inner Mongolia shared 97.5%–99.6%sequence identity with global distributed reference strains.Comparison of the ORF2 gene sequences showed that 80 PCV2 strains widely distributed in 18 regions shared 79.5%–100%sequence identity with reference strains from domestic pigs and wild boars,and were grouped into PCV2a(7),PCV2b(31)and PCV2d(42).For PCV3,17 sequenced strains shared 97.2%–100%nucleotide identity at the genomic level and could be divided into PCV3a(3),PCV3b(2)and PCV3c(12)based on the phylogeny of ORF2 gene sequences.Serological data revealed antibody positive rates against PCV1 and PCV2 of 11.4%(19/167)and 53.9%(90/167)respectively.The data obtained in this study improved our understanding about the epidemiological situations of PCVs infection in free-ranging wild boars in China and will be valuable for the prevention and control of diseases caused by PCVs infection.

关 键 词：Porcine circoviruses(PCVs) EPIZOOTIOLOGY Wild boar China 

分 类 号：S852.651[农业科学—基础兽医学]