,
Li, Yuan http://orcid.org/0000-0003-4013-6044
Metcalf, Benjamin J.
Chochua, Sopio
Li, Zhongya
Gertz, Robert E. Jr
Walker, Hollis
Hawkins, Paulina A.
Tran, Theresa
McGee, Lesley
Beall, Bernard W.
Funding for this research was provided by:
Centers for Disease Control and Prevention
Article History
Received: 23 March 2017
Accepted: 4 August 2017
First Online: 15 August 2017
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.