1. Yunnan Tropical and Subtropical Animal Virus Diseases Laboratory Yunnan Animal Science and Veterinary Institute Kunming China
2. Animal Disease Control and Prevention Center of Jinghong County Jinghong China
3. Animal Disease Control and Prevention Center of Shizong County Qujing China
4. School of Medicine Kunming University Kunming China
5. College of Agriculture and Life Sciences Kunming University Kunming China