Funding for this research was provided by:
Bill and Melinda Gates Foundation (OPP1187628)
Received: 17 August 2019
Accepted: 25 October 2019
First Online: 4 December 2019
Ethics approval and consent to participate
: This study was reviewed and approved by the Institutional Review Board at the University of California, San Francisco (Protocol #17–24230) and the Comité National d’Ethique pour la Recherche (National Ethics Committee of Burkina Faso; Protocol #2018–8-111). Written informed consent to participate is obtained from the caregiver of each child. The consent document includes provisions for banking de-identified samples and sharing of de-identified participant data. Sample informed consent documents can be found in Additional file InternalRef removed.
: Not applicable
: The authors declare that they have no competing interests.