About the Authors

Sophia Ng

Affiliation School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China

Dennis K. M. Ip

Affiliation School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China

Vicky J. Fang

Affiliation School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China

Kwok-Hung Chan

Affiliation Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China

Susan S. Chiu

Affiliation Department of Pediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China

Gabriel M. Leung

Affiliation School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China

J. S. Malik Peiris

Affiliations School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China, Centre for Influenza Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China

Benjamin J. Cowling

bcowling@hku.hk

Affiliation School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China

Competing Interests

The authors have read the journal’s policy and have the following conflicts. DKMI has received research funding from F. Hoffman-La Roche Ltd. JSMP receives research funding from Crucell MV and serves as an ad hoc consultant for GlaxoSmithKline and Sanofi. BJC has received research funding from MedImmune Inc., and consults for Crucell MV. BJC is an Academic Editor for PLOS ONE. This does not alter the authors’ adherence to all the PLOS ONE policies on sharing data and materials. The authors report no other potential conflicts of interest.

Author Contributions

Critically revised the manuscript for important intellectual content: DKMI VJF KHC SSC GML JSMP. Conceived and designed the experiments: SN BJC. Performed the experiments: KHC. Analyzed the data: SN VJF BJC. Contributed reagents/materials/analysis tools: KHC JSMP. Wrote the paper: SN BJC.