About the Authors

Lulu Bravo


Affiliation National Institutes of Health, University of the Philippines Manila (UPM), Manila, Philippines

Vito G. Roque

Affiliation National Epidemiology Center, Department of Health, Manila, Philippines

Jeremy Brett

Affiliation Sanofi-Aventis Pte. Ltd., Singapore

Ruby Dizon

Affiliation Sanofi Pasteur, Manila, Philippines

Maïna L'Azou

Affiliation Global Epidemiology Department, Sanofi Pasteur, Lyon, France

Competing Interests

RD and ML are employees of Sanofi Pasteur. JB is employed by Sanofi-Aventis. LB has received financial reimbursement from Pfizer to attend national and international congresses and lecture fees for attending a speakers bureau, and has acted as a consultant for Pfizer without financial reimbursement. VGR has no conflicts of interest to declare. This does not alter our adherence to all PLoS policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: LB VGR JB RD ML. Performed the experiments: LB VGR JB RD ML. Analyzed the data: LB VGR JB RD ML. Contributed reagents/materials/analysis tools: LB VGR JB RD ML. Wrote the paper: LB VGR JB RD ML.