Funding for this research was provided by:
National Institutes of Health (R01 A1123074, R01 AI050243, D43 TW001505, U19 AI129326)
Received: 29 October 2020
Accepted: 1 June 2021
First Online: 9 June 2021
: The study was approved by the Ethical Review Board of the Kenya Medical Research Institute (KEMRI) under the scientific steering committee (SSC 3434).
: The permission to publish this study was granted by the director of Kenya Medical Research Institute.
: The authors declare that they have no competing interests.