Today, because of the COVID-19 pandemic, countries are facing a health, economic and social crisis unprecedented in recent history. A crisis of such scope and depth calls for actions in response to the many challenges that arise. We have known for a long time that it is not possible to develop effective and efficient measures and policies without evidence, and in particular without quantitative statistics. The data allow to carry out a series of analyses; they make it possible to compare, project and anticipate. In this case, they make it possible to measure the magnitude of the pandemic, to plan possible scenarios and to anticipate them. Unfortunately, countries do not always have the ideal data infrastructure to compare, project and anticipate. Given the difficulties, we provide decision-makers with sources of information that can be useful in their work.