There are errors in the author affiliations. The affiliations should appear as shown here: Earnest Njih Tabah^1,2,3,4, Dickson Shey Nsagha⁵, Anne-Cécile Zoung-Kanyi Bissek^4,6, Alfred Kongnyu Njamnshi^4,7, Martin W. Bratschi^2,3, Gerd Pluschke^2,3, Alphonse Um Boock⁸

1 National Yaws, Leishmaniasis, Leprosy and Buruli ulcer Control Programme, Ministry of Public Health, Yaounde, Cameroon, 2 Swiss Tropical and Public Health Institute, Basel; University of Basel, Basel, Switzerland, 3 The University of Basel, Basel, Switzerland, 4 Faculty of Medicine and Biomedical Sciences, The University of Yaounde 1, Yaounde, Cameroon, 5 Department of Public Health and Hygiene, Faculty of Health Sciences, University of Buea, Cameroon, 6 Department of Operational Research in Health, Ministry of Public Health, Yaounde, Cameroon, 7 Department of Neurology, Central Hospital, Yaounde, Cameroon, 8 Regional Bureau for Africa of the FAIRMED Foundation, Yaounde, Cameroon.