Funding for this research was provided by:
Bill and Melinda Gates Foundation
Received: 21 April 2021
Accepted: 30 July 2021
First Online: 11 August 2021
: For the fieldwork of WS3, ethical clearance was obtained prior to the fieldwork. The WS5 protocol has been reviewed by the following ethical boards: Comité National Ethique des Sciences de la Vie et de la Santé (CNESVS), reference: 024-19/MSHP/CNESVS-kp (Côte d’Ivoire); Comité Institucional de Bioética para Saúde da Universidade Lúrio, reference: 16.2/Julho/CBISUL/19 (Mozambique); Secretary, Government of Cross River State of Nigeria, Ministry of Health, Calabar Health Research Ethics Committee, reference: CRS/MH/HREC/018/Vol. V1/151 (Nigeria) and Ethikkommission Nordwest- und Zentralschweiz (EKNZ), reference: 2018-01059 (Switzerland).During the household survey, the informed consent form is presented to the person considered to be the head of the household at the time of the visit. Health workers are also asked to give their consent.
: Not applicable.
: The authors declare that they have no competing interests. LKK was BMGF project officer for PHISICC and DB is the chair of the PHISICC TAG.