About the Authors

Mary H. Hodges

Contributed equally to this work with: Mary H. Hodges, Ricardo J. Soares Magalhães

Affiliation Helen Keller International, Freetown, Sierra Leone

Ricardo J. Soares Magalhães

Contributed equally to this work with: Mary H. Hodges, Ricardo J. Soares Magalhães

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

Jusufu Paye

Affiliation Helen Keller International, Freetown, Sierra Leone

Joseph B. Koroma

Affiliation National Neglected Tropical Disease Control Program, Ministry of Health and Sanitation, Freetown, Sierra Leone

Mustapha Sonnie

Affiliation Helen Keller International, Freetown, Sierra Leone

Archie Clements

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

Yaobi Zhang

yzhang@hki.org

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

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MHH. Performed the experiments: JP. Analyzed the data: YZ RJSM. Wrote the paper: YZ RJSM MHH. Conducted survey on S.mansoni and STH: JBK. Conceived the analytic design: RJSM AC. Performed spatial analysis: RJSM. Coordinated field work: MS.