About the Authors

Kwablah Awadzi

† Deceased.

Affiliation Onchocerciasis Chemotherapy Research Centre, Hohoe, Ghana

Nicholas O. Opoku

Affiliation Onchocerciasis Chemotherapy Research Centre, Hohoe, Ghana

Simon K. Attah

Affiliations Onchocerciasis Chemotherapy Research Centre, Hohoe, Ghana, University of Ghana Medical School, Department of Microbiology, Accra, Ghana

Janis Lazdins-Helds

Affiliation UNICEF/UNDP/World Bank/World Health Organization Special Programme for Research and Training in Tropical Diseases, World Health Organization, Geneva, Switzerland

Annette C. Kuesel

kuesela@who.int

Affiliation UNICEF/UNDP/World Bank/World Health Organization Special Programme for Research and Training in Tropical Diseases, World Health Organization, Geneva, Switzerland

Competing Interests

The authors have read the journal's policy and report the following matters, which could be perceived as possible sources for conflict of interests: This study was funded by the UNICEF/UNDP/World Bank/World Health Organisation Special Programme for Research and Training in Tropical Diseases (WHO/TDR) and the African Programme for Onchocerciasis Control. Pfizer provided drug for this study as well as systems for analysis of the data. This does not alter our adherence to all PLOS NTDs policies on sharing data and materials. Pfizer did not contribute to the current publication. JLH and ACK were responsible for the management of the project at WHO/TDR. They state that their employment and role in project management has not caused any conflict of interest in any of the following: study design, data collection, data analysis, data interpretation, and decision to publish.

Author Contributions

Conceived and designed the experiments: KA JLH ACK. Performed the experiments: KA NOO SKA. Analyzed the data: KA ACK. Wrote the paper: ACK. Review and approval of the manuscript: NOO SKA JLH ACK.