Funding for this research was provided by:
Bill and Melinda Gates Foundation (OPP1053230)
Received: 17 August 2021
Accepted: 26 April 2022
First Online: 13 June 2022
: Ethical clearance for the study was obtained from the Federal Ministry of Health’s Bioethics Committee in the Department of Planning and Research. Details of the procedure were explained to all participants and heads of the schools during social mobilisation. Verbal assent of the Head Teachers as well as informed consent from parents and legal guardian of all children that participated were sought. Participation was voluntary.
: All authors consent to the publication of this research work.
: The authors declare no competing interest.