About the Authors

Andrew Mujugira

mujugira@uw.edu

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

Jared M. Baeten

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

Deborah Donnell

Affiliations Department of Global Health, University of Washington, Seattle, Washington, United States of America, Statistical Center for HIV/AIDS Research and Prevention, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America

Patrick Ndase

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

Nelly R. Mugo

Affiliations Department of Global Health, University of Washington, Seattle, Washington, United States of America, Department of Obstetrics & Gynecology, University of Nairobi & Kenyatta National Hospital, Nairobi, Kenya

Linda Barnes

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

James D. Campbell

Affiliation Centers for Disease Control and Prevention, Entebbe, Uganda

Jonathan Wangisi

Affiliation The AIDS Support Organization, Kampala, Uganda

Jordan W. Tappero

Affiliation Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Elizabeth Bukusi

Affiliations Department of Global Health, University of Washington, Seattle, Washington, United States of America, Department of Obstetrics & Gynecology, University of Nairobi & Kenyatta National Hospital, Nairobi, Kenya, Center for Microbiology Research, Kenya Medical Research Institute, Nairobi, Kenya, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San Francisco, San Francisco, California, United States of America

Craig R. Cohen

Affiliation Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San Francisco, San Francisco, California, United States of America

Elly Katabira

Affiliation Infectious Disease Institute, Makerere University, Kampala, Uganda

Allan Ronald

Affiliations Infectious Disease Institute, Makerere University, Kampala, Uganda, Department of Medicine, University of Manitoba, Winnipeg, Canada

Elioda Tumwesigye

Affiliation Kabwohe Clinical Research Center, Kabwohe, Uganda

Edwin Were

Affiliation Department of Reproductive Health, Moi University, Eldoret, Kenya

Kenneth H. Fife

Affiliation Department of Medicine, Indiana University, Indianapolis, Indiana, United States of America

James Kiarie

Affiliation Department of Obstetrics & Gynecology, University of Nairobi & Kenyatta National Hospital, Nairobi, Kenya

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

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

Lara Kidoguchi

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

Dana Panteleeff

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

Meighan Krows

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

Heena Shah

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

Jennifer Revall

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

Susan Morrison

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

Lisa Ondrejcek

Affiliation DF/Net Research, Inc., Seattle, Washington, United States of America

Charlotte Ingram

Affiliation Department of Molecular Medicine and Hematology, University of the Witwatersrand, and Contract Laboratory Services (CLS), Wits Health Consortium, Johannesburg, South Africa

Robert W. Coombs

Affiliations Department of Medicine, University of Washington, Seattle, Washington, United States of America, Department of Laboratory Medicine, University of Washington, Seattle, Washington, United States of America

Jairam R. Lingappa

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 Pediatrics, University of Washington, Seattle, Washington, United States of America

Connie Celum

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

for the Partners PrEP Study Team

Competing Interests

Author LO is an employee of DF/Net Research, Inc., which conducted the data management for the study. She has no competing interests and her inclusion as an author does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: JMB CC. Performed the experiments: AM JMB DD PN NRM LB JDC JW JWT EB CRC EK AR ET EW KHF JK CF GJS LK DP MK HS JR SM LO CI RWC JRL CC. Analyzed the data: LK. Wrote the paper: AM JMB.