1. National Research Center for Wildlife-Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, No. 1-5 Beichenxi Road, Chaoyang District, Beijing, People's Republic of China 100101;
2. Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Military Veterinary Institute, Academy of Military Medical Sciences, 666 Liuying W Road, Changchun, Jilin Province, People's Republic of China 130122;
3. Beijing Animal Husbandry Station, Beijing, People's Republic of China 100000;