1. Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
2. Department of Microbiology, School of Medicine, Jiangsu University, Zhenjiang, People’s Republic of China
3. Blood Systems Research Institute, San Francisco, CA, USA
4. Shanghai Pudong New Area Center for Animal Disease Prevention and Control, Shanghai, People’s Republic of China
5. Department of Laboratory Medicine, University of California San Francisco, San Francisco, CA, USA