About the Authors

Magaly M. Blas

Contributed equally to this work with: Magaly M. Blas, Isaac E. Alva

magaly.blas@upch.pe

Affiliation Epidemiology, STD and HIV Unit, School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru

Isaac E. Alva

Contributed equally to this work with: Magaly M. Blas, Isaac E. Alva

Affiliation Epidemiology, STD and HIV Unit, School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru

Patricia J. García

Affiliation Epidemiology, STD and HIV Unit, School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru

Cesar Cárcamo

Affiliation Epidemiology, STD and HIV Unit, School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru

Silvia M. Montano

Affiliation United States Naval Medical Research Unit No. 6 (NAMRU-6), Callao, Peru

Nicanor Mori

Affiliation United States Naval Medical Research Unit No. 6 (NAMRU-6), Callao, Peru

Ricardo Muñante

Affiliation Ucayali Regional Health Directorate, Ministry of Health, Ucayali, Peru

Joseph R. Zunt

Affiliation School of Public Health and Community Medicine, Departments of Neurology, Global Health and Medicine, University of Washington, Seattle, Washington, United States of America

Competing Interests

Magaly Blas and Patricia Garcia received research grants from the Investigator- Initiated Studies Program of Merck & Co., Inc. 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: MB IA PG CC SM JZ. Performed the experiments: MB IA. Analyzed the data: MB IA. Contributed reagents/materials/analysis tools: MB IA PG CC SM NM RM JZ. Wrote the paper: MB IA PG CC SM NM RM JZ.