Participants and study procedures.
This qualitative study was conducted between June and December 2022 among randomly selected parents/caregivers of the child participants in the trial, using a purposive sampling method. Trial participants aged ≥ 10 years were also selected randomly for qualitative interviews. In addition, healthcare workers and trial staff who were part of the implementing team for the delivery of the study drugs were also interviewed. We also conducted in-depth interviews with managers of the SMC and NTD programs of the Senegal Ministry of Health.