Before revision:   We use our differential equation parametrised with experimental data to make several predictions, such as the date when Italy and Belgium will reach a peak number of COVID-19 infected people  .
After revision:  The second part of the work is devoted to modeling the descending phase, i.e. the decrease of the number of people tested positive for COVID-19. Also in this case, we propose a new set of dynamic differential equations that we solved numerically. We use our differential equation parametrised with experimental data to make several predictions, such as the date when Italy and Belgium will reach a peak number of COVID-19 infected people .