About the Authors

Johanna M. Jefferies

Affiliations Faculty of Medicine and Institute of Life Sciences, University of Southampton, Southampton, United Kingdom, NIHR Southampton Respiratory Biomedical Research Unit, Southampton, United Kingdom, Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia

Mohd Yasim Mohd Yusof

Affiliation Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia

Shamala Devi Sekaran

Affiliation Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia

Stuart C. Clarke

S.C.Clarke@Southampton.ac.uk

Affiliations Faculty of Medicine and Institute of Life Sciences, University of Southampton, Southampton, United Kingdom, NIHR Southampton Respiratory Biomedical Research Unit, Southampton, United Kingdom, Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia, Public Health England, Southampton, United Kingdom, University of Southampton Malaysia Campus, Nusajaya, Malaysia

Competing Interests

S.C.C. currently receives unrestricted research funding from Pfizer Vaccines (previously Wyeth Vaccines) and research funding from GSK. J.M.J has received consulting fees from GlaxoSmithKline. S.C.C. has received consulting fees from GlaxoSmithKline, Pfizer, and Novartis. S.C.C. and J.M.J. have received financial assistance from vaccine manufacturers to attend conferences. All grants and honoraria are paid into accounts within the respective NHS Trusts or Universities, or to independent charities. 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: JMJ SDS SCC. Performed the experiments: JMJ. Analyzed the data: JMJ. Contributed reagents/materials/analysis tools: SDS MYMY. Wrote the paper: JMJ SDS MYMY SCC.