1. Center for Pathogen Evolution, Department of Zoology, University of Cambridge, Cambridge CB2 3EJ, UK.
2. World Health Organization (WHO) Collaborating Center for Modeling, Evolution, and Control of Emerging Infectious Diseases, Cambridge CB2 3EJ, UK.
3. Department of Viroscience, Erasmus Medical Center, Rotterdam 3015 CE, Netherlands.
4. Oxford University Clinical Research Unit and Wellcome Trust Major Overseas Programme, Hanoi, Vietnam.
5. WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory at the Peter Doherty Institute for Infection and Immunity, Melbourne VIC 3000, Australia.
6. National Institute of Hygiene and Epidemiology, Hanoi, Vietnam.
7. Oxford University Museum of Natural History, Oxford OX1 3PW, UK.
8. Insect Biomechanics Group, Department of Zoology, University of Cambridge, Cambridge CB2 3EJ, UK.
9. Department of Veterinary Medicine, University of Cambridge, Cambridge CB3 0ES, UK.
10. bobblewire.com, Saint Louis, MO 63112, USA.
11. Abbott Laboratories, Weesp 1380 DA, Netherlands.
12. Nuffield Department of Clinical Medicine, Centre for Tropical Medicine, University of Oxford, Oxford OX3 7BN, UK.
13. Melbourne School of Population and Global Health, University of Melbourne, Parkville VIC 3010, Australia.