1. 1Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Collaborative Innovation Center for Biomedicine, School of Public Health, Guangxi Medical University, Nanning 530021, Guangxi, PR China
2. 2State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing 102206, PR China
3. 3Shanghai Institute for Emerging and Re-emerging Infectious Diseases, Shanghai Public Health Clinical Center, Shanghai 201508, PR China
4. 4School of Biology and Food Sciences, Shangqiu Normal University, Shangqiu, Henan 476000, PR China
5. 5Shaanxi Institute of Zoology, Xi'an 710032, PR China