The COVID-19 pandemic is threatening to stress healthcare systems throughout the world and it is making the development of a vaccine an important part of a strategy to arrest the virus. Though clinical trials for a vaccine are under way, creating a vaccine alone will not be enough. If those efforts are successful, there will be challenges ahead with manufacturing, distributing, and providing equitable access throughout the world. We spoke to Aurélia Nguyen, managing director for vaccines and sustainability for the The Global Alliance for Vaccines and Immunizations about the COVID-19 outbreak, how it may be playing out in different parts of the world, and what was learned from GAVI involvement in previous efforts to develop an ebola vaccine.