l continents with the exception of Antarctica, resulting in a global pandemic.
The data of the global burden of COVID-19 are impressive. Indeed, currently (available data up to 23 July 2020) the coronavirus is affecting 212 countries and territories around the world, with over 15 million cases and over 630,000 confirmed deaths (global mortality: 5.4%) [3,4].
The Americas and Europe are the most affected continents in the world. In the United States of America (U.S.A.), 4,103,674 cases