1 National Disease Control, Ministry of Health, Kampala, Uganda.
2 National Onchocerciasis Control Program, Ministry of Health, Kisangani, Democratic Republic of the Congo.
3 Disease Prevention and Control Cluster, World Health Organization, Kampala, Uganda.
4 ROC Consulting, Palo Alto, California, United States of America.
5 Evolutionary Biology Group, University of Antwerp, Antwerp, Belgium; Institute of Integrative Ecology, University of Liverpool, Liverpool, United Kingdom.
6 Department of Epidemiology and Social Medicine, University of Antwerp, Antwerp, Belgium; Department of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium.