Our world is challenged by a changing climate, violent conflict, persistent poverty and mass migration. The benefits of globalization and new technologies remain unequally shared. As a result, people face an ever-growing avalanche of threats to their health. I have worked on such issues for over 40 years. As I see it, the need for a robust, reliable and responsive World Health Organization has never been more urgent.

All my professional life I have been working in public health - as a community-based practitioner, educator, public servant, director, diplomat and coordinator. In the past 12 years, successive Secretaries-General of the United Nations have entrusted me to lead collective action on pressing and complex challenges – responding to avian and pandemic influenza, promoting food security, ending malnutrition, combating Ebola, promoting the 2030 Agenda for Sustainable Development and advancing efforts relating to climate change.

David Nabarro