1 Department of Microbiology and Division of Infectious Diseases, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China. cmlbright@126.com.
2 Department of Zoology, University of Oxford, Oxford, United Kingdom.
3 Department of Microbiology and Division of Infectious Diseases, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China.
4 Department of Microbiology and Division of Infectious Diseases, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China. chenmin@scdc.sh.cn.
5 Department of Zoology, University of Oxford, Oxford, United Kingdom. martin.maiden@zoo.ox.ac.uk.