About the Authors

Julia L. Marcus

Affiliations Gladstone Institute of Virology and Immunology, San Francisco, California, United States of America, University of California, Berkeley, California, United States of America

David V. Glidden

Affiliation University of California San Francisco, San Francisco, California, United States of America

Kenneth H. Mayer

Affiliations Fenway Institute, Fenway Health, Boston, Massachusetts, United States of America, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America

Albert Y. Liu

Affiliations University of California San Francisco, San Francisco, California, United States of America, Bridge HIV, San Francisco Department of Public Health, San Francisco, California, United States of America

Susan P. Buchbinder

Affiliations University of California San Francisco, San Francisco, California, United States of America, Bridge HIV, San Francisco Department of Public Health, San Francisco, California, United States of America

K. Rivet Amico

Affiliation Center for Health, Intervention and Prevention, University of Connecticut, Storrs, Connecticut, United States of America

Vanessa McMahan

Affiliation Gladstone Institute of Virology and Immunology, San Francisco, California, United States of America

Esper Georges Kallas

Affiliation Division of Clinical Immunology and Allergy, School of Medicine, University of São Paulo, São Paulo, Brazil

Orlando Montoya-Herrera

Affiliation Fundación Ecuatoriana Equidad, Guayaquil, Guayas, Ecuador

Jose Pilotto

Affiliation Laboratorio de AIDS e Imunologia Molecular, Hospital Geral de Nova Iguacu, Rio de Janeiro, Brazil

Robert M. Grant

robert.grant@ucsf.edu

Affiliations Gladstone Institute of Virology and Immunology, San Francisco, California, United States of America, University of California San Francisco, San Francisco, California, United States of America

Competing Interests

Co-author Kenneth Mayer has received an unrestricted research grant from Gilead Sciences. Co-author Esper Kallas is a PLOS ONE Editorial Board member. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials. For the remaining authors, no conflicts of interest were declared.

Author Contributions

Conceived and designed the experiments: JLM DVG RMG. Analyzed the data: JLM DVG. Wrote the paper: JLM. Coordinated the study: VM. Oversaw the enrollment of participants and procurement of study samples: KHM AYL SPB VM EGK OM JHP. Contributed to the interpretation of the data: KRA KHM AYL SPB VM EGK OM JHP.