Received: 29 September 2020
Accepted: 13 October 2020
First Online: 30 December 2020
Ethics approval and consent to participate
: Research was conducted as approved by Institutional Review Board of Centers for Disease Control and Prevention. The findings and conclusions in this report are those of the authors and do not necessarily represent the official position of the Centers for Disease Control and Prevention.
: Consent for publication was obtained with the internal CDC clearance system.
: The authors declare they don’t have any competing interests.