Funding for this research was provided by:
National Institute of Allergy and Infectious Diseases (T32AI114398)
Received: 23 April 2020
Accepted: 27 January 2021
First Online: 3 May 2021
Ethics approval and consent to participate
: The institutional review board at the US Centers for Disease Control and Prevention (CDC) provided non-research determination for this analysis. CDC Protocol number: CGH HSR protocol number 2017-519.
: The data in our analysis were completely de-identified and anonymous and waived by the CDC IRB for the need of consent for publication from participants.
: None of the authors declared any financial, general or institutional competing interests. All authors had full access to the study data and take full responsibility for the accuracy of the data analyzed.