Funding for this research was provided by:
National Institute of Allergy and Infectious Diseases (R01-AI036525)
National Institutes of Health (U19-AI082655)
DHHS Office of the Secretary (U19-AI109776)
Received: 18 October 2019
Accepted: 10 February 2020
First Online: 25 February 2020
Ethics approval and consent to participate
: Written informed consent was obtained from subjects and all procedures were approved by the University of Maryland, Baltimore Institutional Review Board (IRB) and registered on ClinicalTrials.gov (identifier NCT03970304). The study was conducted in accordance with the principles of the International Conference of Harmonization Good Clinical Practice guidelines.
: Not applicable.
: The authors declared no conflict of interest.