About the Authors

Alison L. Drake

adrake2@uw.edu

Affiliation Department of Global Health, University of Washington, Seattle, Washington, United States of America

Alison C. Roxby

Affiliation Department of Medicine, University of Washington, Seattle, Washington, United States of America

James Kiarie

Affiliation Department of Obstetrics and Gynaecology, University of Nairobi, Nairobi, Kenya

Barbra A. Richardson

Affiliations Department of Global Health, University of Washington, Seattle, Washington, United States of America, Department of Biostatistics, University of Washington, Seattle, Washington, United States of America, Divisions of Vaccine and Infectious Diseases, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America

Anna Wald

Affiliations Department of Medicine, University of Washington, Seattle, Washington, United States of America, Department of Epidemiology, University of Washington, Seattle, Washington, United States of America, Department of Laboratory Medicine, University of Washington, Seattle, Washington, United States of America, Divisions of Vaccine and Infectious Diseases, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America

Grace John-Stewart

Affiliations Department of Global Health, University of Washington, Seattle, Washington, United States of America, Department of Medicine, University of Washington, Seattle, Washington, United States of America, Department of Epidemiology, University of Washington, Seattle, Washington, United States of America, Department of Pediatrics, University of Washington, Seattle, Washington, United States of America

Carey Farquhar

Affiliations Department of Global Health, University of Washington, Seattle, Washington, United States of America, Department of Medicine, University of Washington, Seattle, Washington, United States of America, Department of Epidemiology, University of Washington, Seattle, Washington, United States of America

Competing Interests

ALD, ACR, JK, GJS, BAR, and CF declared that no competing interests exist. AW received grant support from GlaxoSmithKline and has been a consultant for AiCuris. This does not alter the authors’ adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: ALD JK BAR AW GJS CF. Performed the experiments: ACR. Analyzed the data: ALD BAR. Contributed reagents/materials/analysis tools: AW. Wrote the paper: ALD ACR AW GJS CF.