Funding for this research was provided by:
the Global Emerging Infections Surveillance and Response System (GEIS), a Division of the Armed Forces Health Surveillance Center
Received: 27 November 2017
Accepted: 2 February 2018
First Online: 23 February 2018
: All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.
: Not applicable.
: The authors declare that they have no competing interests.
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