Tim Nguyen is the Head of Unit for High Impact Events in the Epidemic and Pandemic Preparedness and Prevention Department of the WHO Health Emergencies Programme (WHE). Joining WHO in 2006 working as a Technical Officer in the Yellow Fever Programme which coordinated an initiative funded by the GAVI Alliance to provide 40 million doses of vaccine to most at-risk populations. In 2008, he joined WHO’s Global Influenza Programme and took part in the global response work to the first influenza pandemic of the 21st century. In 2011, he was the founding member of WHO’s Global Hepatitis Programme and project manager for the development of the first WHO treatment guideline for HCV. From 2014-2017, he was the Unit leader for Knowledge Management, Evidence and Research for Policy-Making at the WHO Regional Office for Europe based in Copenhagen, Denmark. There, he established the scientific journal Public Health Panorama and developed the WHO/Europe resolution and action plan for evidence-informed policy-making.