[Gong, Wenjie; Fan, Jinhong; Tu, Changchun; Shao, Mingfu; Jiang, Yu] Acad Mil Med Sci, Inst Vet Sci, Changchun 130062, Peoples R China.
[Gong, Wenjie] Jilin Univ, Inst Zoonoses, Changchun 130062, Peoples R China.
[Sun, Yanwei; Za, Yunfeng] Guangdong Ctr Anim Dis Control, Guangzhou 510230, Guangdong, Peoples R China.
[Xiong, Zhonglian; Zeng, Zheng] Chongqing Anim Dis Prevent & Control Ctr, Chongqing 401147, Peoples R China.
[Yu, Xinglong] Hunan Agr Univ, Vet Coll, Changsha 410128, Hunan, Peoples R China.