Funding for this research was provided by:
Bill and Melinda Gates Foundation (OPP 1016669)
Received: 22 December 2019
Accepted: 17 June 2020
First Online: 2 July 2020
Ethics approval and consent to participate
: A written informed consent from (ICF) was obtained from each participant. For subjects 7 years old or younger, a written informed consent was obtained from at least one parent or legal guardian. For those aged between 8 and 18 years, a written assent form was obtained, plus written informed consent from at least one parent or legal guardian. The protocol obtained ethical approvals from the Ethics Committee of the Universidad de Antioquia, Secretaria de Salud de Medellin, Metrosalud E.S.E/ Unidad Hospitalaria Santa Cruz and the Institutional Review Board (IRB) of International Vaccine Institute (IVI).
: Not applicable.
: None. I certify that the authors do not have any relevant financial relationships or potential conflicts of interest to disclose regarding the material discussed in this manuscript.