About the Authors

Samir K. Saha

samirk.sks@gmail.com

Affiliation Department of Microbiology, Dhaka Shishu (Children) Hospital, Child Health Research Foundation, Dhaka, Bangladesh

Hassan M. Al Emran

Affiliation Department of Microbiology, Dhaka Shishu (Children) Hospital, Child Health Research Foundation, Dhaka, Bangladesh

Belal Hossain

Affiliation Department of Microbiology, Dhaka Shishu (Children) Hospital, Child Health Research Foundation, Dhaka, Bangladesh

Gary L. Darmstadt

Current address: Family Health Division, Global Health Program, Bill and Melinda Gates Foundation, Seattle, Washington, United States of America

Affiliation Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, United States of America

Senjuti Saha

Affiliation The Davidson Laboratory, Department of Molecular Genetics, University of Toronto, Toronto, Canada

Maksuda Islam

Affiliation Department of Microbiology, Dhaka Shishu (Children) Hospital, Child Health Research Foundation, Dhaka, Bangladesh

Atique I. Chowdhury

Affiliation International Centre for Diarrhoeal Disease and Research, Dhaka, Bangladesh

Dona Foster

Affiliation Infectious Diseases and Clinical Microbiology, University of Oxford, Oxford, United Kingdom

Aliya Naheed

Affiliation International Centre for Diarrhoeal Disease and Research, Dhaka, Bangladesh

Shams El Arifeen

Affiliation International Centre for Diarrhoeal Disease and Research, Dhaka, Bangladesh

Abdullah H. Baqui

Affiliation Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, United States of America

Shamim A. Qazi

Affiliation Child and Adolescent Health Department, World Health Organization, Geneva, Switzerland

Stephen P. Luby

Affiliations International Centre for Diarrhoeal Disease and Research, Dhaka, Bangladesh, Global Disease Detection and Emergency Response, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Robert F. Breiman

Affiliation Global Disease Detection and Emergency Response, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Mathuram Santosham

Affiliation Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, United States of America

Robert E. Black

Affiliation Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, United States of America

Derrick W. Crook

Affiliation Infectious Diseases and Clinical Microbiology, University of Oxford, Oxford, United Kingdom

and Pneumococcal Study Group

Competing Interests

Dr. Crook and Dr. Saha received a research grant from Pfizer Inc. and Novartis respectively. 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: SKS GLD SEA AN AHB SAQ SPL RFB MS REB DWC. Performed the experiments: HMA BH MI DF AIC. Analyzed the data: SKS HMA DWC. Contributed reagents/materials/analysis tools: SKS GLD SEA DWC. Wrote the paper: SKS GLD SS AHB SPL RFB MS REB DWC.