Funding for this research was provided by:
Bill and Melinda Gates Foundation (OPP1131320)
Received: 7 January 2021
Accepted: 22 October 2021
First Online: 15 November 2021
: The cohort study received ethics approval from the Kenya Medical Research Institute Scientific and Ethics Review Unit (KEMRI/SERU/3318/054), the Oxford Tropical Research Ethics Committee (OxTREC number 34–16) and the Icddr,b Ethics Review Committee (CHAIN Social Science Study PR-16056). The cohort study obtained written parental consent for the children’s participation. The data used in this paper involved interviews with carers, community health workers and key informants. Administrative clearance was obtained from the various heads of health departments in the respective study sites and written, continuous, informed consent obtained from all participants. Where there were repeat encounters, verbal consent was sought for continued participation. The director, Kenya Medical Research Institute (KEMRI) has granted permission to publish this paper.
: Not applicable.
: None declared.