1. Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.
2. School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China.
3. Department of Food Science and Nutrition, University of Maryland, College Park, Maryland.
4. Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China.
5. Centers for Disease Control and Prevention, Atlanta, Georgia.
6. Department of Emergency, The Third Affiliated Hospital of Sun Yat-Sen University Guangzhou, China.