About the Authors

Mark I. Chen

Mark_IC_Chen@ttsh.com.sg

Affiliations Clinical Epidemiology, Tan Tock Seng Hospital, Singapore, Singapore, Epidemiology and Public Health, National University of Singapore, Singapore, Singapore, Duke-NUS Graduate Medical School, Singapore, Singapore

Ian G. Barr

Affiliation World Health Organization Collaborating Centre for Reference and Research on Influenza, Melbourne, Victoria, Australia

Gerald C. H. Koh

Affiliations Epidemiology and Public Health, National University of Singapore, Singapore, Singapore, Centre for Health Services Research, National University of Singapore, Singapore, Singapore

Vernon J. Lee

Affiliations Epidemiology and Public Health, National University of Singapore, Singapore, Singapore, Centre for Health Services Research, National University of Singapore, Singapore, Singapore, Biodefence Centre, Ministry of Defence, Singapore, Singapore, Centre for Epidemiology and Population Health, Australian National University, Canberra, Australian Capital Territory, Australia

Caroline P. S. Lee

Affiliation Department of Infectious Diseases, Tan Tock Seng Hospital, Singapore, Singapore

Robert Shaw

Affiliation World Health Organization Collaborating Centre for Reference and Research on Influenza, Melbourne, Victoria, Australia

Cui Lin

Affiliation National Public Health Laboratory, Ministry of Health, Singapore, Singapore

Jonathan Yap

Affiliation Biodefence Centre, Ministry of Defence, Singapore, Singapore

Alex R. Cook

Affiliation Department of Statistics and Applied Probability, National University of Singapore, Singapore, Singapore

Boon Huan Tan

Affiliation Detection and Diagnostics Laboratory, DSO National Laboratories, Singapore, Singapore

Jin Phang Loh

Affiliation Detection and Diagnostics Laboratory, DSO National Laboratories, Singapore, Singapore

Timothy Barkham

Affiliation Department of Laboratory Medicine, Tan Tock Seng Hospital, Singapore, Singapore

Vincent T. K. Chow

Affiliation Department of Microbiology, National University of Singapore, Singapore, Singapore

Raymond T. P. Lin

Affiliation National Public Health Laboratory, Ministry of Health, Singapore, Singapore

Yee-Sin Leo

Affiliation Department of Infectious Diseases, Tan Tock Seng Hospital, Singapore, Singapore

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MIC IGB GCHK VJL JY VTKC RTPL YSL. Performed the experiments: IGB CPL RS CL BHT JPL TB. Analyzed the data: MIC VJL ARC. Contributed reagents/materials/analysis tools: IGB RS CL RTPL. Wrote the paper: MIC GCHK VJL TB VTKC.