About the Authors

Joseph B. Koroma

Affiliations National Onchocerciasis Control Program, Ministry for Health and Sanitation, Freetown, Sierra Leone, World Health Organization, Freetown, Sierra Leone

Jen Peterson

Affiliation Helen Keller International, Freetown, Sierra Leone

Aiah A. Gbakima

Affiliation University of Sierra Leone, Freetown, Sierra Leone

Francis E. Nylander

Affiliation World Health Organization, Freetown, Sierra Leone

Foday Sahr

Affiliation University of Sierra Leone, Freetown, Sierra Leone

Ricardo J. Soares Magalhães

Affiliation School of Population Health, University of Queensland, Herston, Queensland, Australia

Yaobi Zhang

Affiliation Regional Office for Africa, Helen Keller International, Dakar, Senegal

Mary H. Hodges

mhodges@hki.org

Affiliation Helen Keller International, Freetown, Sierra Leone

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JBK JP. Performed the experiments: JBK. Analyzed the data: RJSM YZ MHH. Contributed reagents/materials/analysis tools: AAG FEN FS. Wrote the paper: MHH. Reviewed and revised the manuscript: YZ.