About the Authors

M. Arcuri

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Visualization, Writing – original draft

Affiliations GSK Vaccines Institute for Global Health (GVGH), Siena, Italy, University of Birmingham, Edgbaston, Birmingham, United Kingdom

R. Di Benedetto

Roles Data curation, Formal analysis, Investigation, Methodology, Writing – review & editing

Affiliation GSK Vaccines Institute for Global Health (GVGH), Siena, Italy

A. F. Cunningham

Roles Conceptualization, Formal analysis, Funding acquisition, Supervision, Validation, Writing – review & editing

Affiliation University of Birmingham, Edgbaston, Birmingham, United Kingdom

A. Saul

Roles Conceptualization, Formal analysis, Supervision, Validation, Writing – review & editing

Affiliation GSK Vaccines Institute for Global Health (GVGH), Siena, Italy

C. A. MacLennan

Roles Conceptualization, Formal analysis, Funding acquisition, Supervision, Validation, Writing – review & editing

Affiliation Jenner Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom

F. Micoli

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Supervision, Validation, Writing – original draft

francesca.x.micoli@gsk.com

Affiliation GSK Vaccines Institute for Global Health (GVGH), Siena, Italy

Competing Interests

This work was funded by Novartis Vaccines Institute for Global Health (NVGH); in March 2015 the Novartis non-influenza Vaccines business was acquired by the GSK group of companies. Thereafter the company became GSK Vaccines Institute for Global Health, an affiliate of GlaxoSmithKline Biologicals SA. Francesca Micoli, Roberta Di Benedetto and Allan Saul are employees of GSK Vaccines Institute for Global Health S.r.l. (GVGH), part of the GSK group of companies. Calman A. MacLennan was emplyee of NVGH for part of the study. Melissa Arcuri received a PhD studentship from GSK Vaccines and University of Birmingham. The existing patents and/or products in development do not alter our adherence to PLOS ONE policies on sharing data and materials.