1 Center for Global Health, Institut Pasteur, Paris, France; Consortium for the Standardization of Influenza Seroepidemiology (CONSISE), Washington, DC, USA. Electronic address: Maria.Van-Kerkhove@pasteur.fr.
2 Knowledge Management, Bioethics and Research Office, Pan American Health Organization, Washington, DC, USA.
3 World Health Organization, Geneva Switzerland.
4 Section Clinical Tropical Medicine, Department for Infectious Diseases, Heidelberg University Hospital, Heidelberg, Germany; International Research Consortium on Dengue Risk Assessment, Management and Surveillance (IDAMS), Oxford, UK.
5 International Severe Acute Respiratory & Emerging Infection Consortium (ISARIC), Oxford, UK.