Funding for this research was provided by:
Wellcome Trust (202800, HCUZZ0)
Wellcome Trust (098532)
European Research Council (294557)
Received: 16 January 2020
Accepted: 23 April 2020
First Online: 15 June 2020
Ethics approval and consent to participate
: Ethical approval for study was obtained from the Kenya Medical Research Institute (KEMRI) National Scientific Steering and Research Committees and the Oxford Tropical Research Ethics Committee (OxTREC). Following an explanation of the study, written informed consent was obtained from the parent or guardian of each child included in the study.
: Not applicable
: The authors declare that they have no competing interests.