Description: Many countries have suffered the ups and downs of the COVID-19pandemic, and Mexico is no exception. Even worse, in contrast withEuropean countries that saw numbers dip during the summer of2020, Mexico did not. A first peak was reached at the end of July2020, then a slight decrease in the following two months. SinceOctober, Mexico has experienced the worst increasing trend of thewhole epidemic. In this article, Arturo Erdely, a professor of actuarialscience, explains this increase.