Funding for this research was provided by:
National Institutes of Health (AI143567-01)
Received: 15 September 2020
Accepted: 16 December 2020
First Online: 4 January 2021
Ethics approval and consent to participate
: We used de-identified, archived serum samples throughout the study.
: All authors have agreed to publication of the manuscript.
: The authors declare no competing interests.