Geneva Solutions infodemiology Interview Publié le 21 juillet 2020 13:50. Modifié le 21 juillet 2020 14:48. WHO's Next Puzzle: how can 12 people fight fake news around the world? par Yvan Pandelé Sylvie Briand is Director of the Department of Global Infectious Hazard Preparedness at the WHO. | Keystone / Salvatore Di Nolfi