About the Authors

Diya Surie

Roles Methodology, Writing – original draft, Writing – review & editing

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

Krista Yuhas

Roles Data curation, Formal analysis, Methodology, Software, Validation, Writing – review & editing

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

Kate Wilson

Roles Conceptualization, Writing – review & editing

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

Linnet N. Masese

Roles Investigation, Project administration, Writing – review & editing

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

Juma Shafi

Roles Conceptualization, Investigation, Methodology, Project administration, Writing – review & editing

Affiliation Institute of Tropical and Infectious Diseases, University of Nairobi, Nairobi, Kenya

John Kinuthia

Roles Conceptualization, Investigation, Writing – review & editing

Affiliation Departments of Research and Programs, Reproductive Health, Kenyatta National Hospital, Nairobi, Kenya

Walter Jaoko

Roles Conceptualization, Investigation, Project administration, Writing – review & editing

Affiliation Kenya AIDS Vaccine Initiative Institute, University of Nairobi, Nairobi, Kenya

R. Scott McClelland

Roles Conceptualization, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Validation, Writing – original draft, Writing – review & editing

mcclell@uw.edu

Affiliations Department of Medicine, University of Washington, Seattle, United States of America, Department of Global Health, University of Washington, Seattle, United States of America, Institute of Tropical and Infectious Diseases, University of Nairobi, Nairobi, Kenya, Department of Epidemiology, University of Washington, Seattle, United States of America

Competing Interests

Dr. McClelland receives research funding, paid to the University of Washington, from Hologic Corporation. All other authors report no conflict of interest. This does not alter our adherence to PLOS ONE policies on sharing data and materials.