Acknowledgements
We would like to thank the study participants, without whom this work would not be possible, and the technical staff, including drivers, laboratory technicians, study midwives, data clerks and community workers. We thank the Coalition for Operational Research on NTDs, which mainly funded the project, so as all the other donors (DZIF, EKFS, Bayer Foundation) who partially contributed to the success of this study. A special thanks to all the country authorities who allowed and supported the implementation of this study.