Funding for this research was provided by:
National Mega-project of Science Research (2017ZX10201101-002-002 (YX))
National Natural Science Foundation of China (11571273 (YX), 11631012 (YX))
National Science Foundation (DMS-1758290)
US National Institute of General Medical Sciences Model of Infectious Disease Agent Study (U01GM087719)
National Institute of Allergy and Infectious Diseases K01 award (K01AI125830)
Received: 25 August 2017
Accepted: 28 March 2018
First Online: 24 April 2018
Ethics approval and consent to participate
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: The authors declare that they have no competing interests.
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