All people around the world are directly or indirectly under the influence of the SARS-CoV-2 virus, which appeared in China in December 2019, and the COVID-19 pandemic caused by it. This pandemic, which is still ongoing, has infected over 40 million people and killed around 1 million, according to the latest data from the World Health Organization. Besides significant effects on human health, the overall effect of the pandemic will be much greater than predicted, as it can also cause major social and economic problems. In this context, the book contributes with 10 original scientific studies for understanding the health, social, and economic aspects of the COVID-19 pandemic.