[Covid-19 and the 1918-1919 influenza: historical parallels, questions and answers].

The rise of the covid-19 pandemic has led to renewed interest in the 1918-1919 influenza in search of aspects that might help us understand the current situation, but also as an opportunity to re-evaluate the serious twentieth-century health crisis in light of what we are experiencing now. In this context and with that goal, this historical reflection shows the parallels that exist and the need for a realization that our model of society is undergoing a crisis and requires profound transformation.