The study analyzes differences in causes of COVID-19 contagion among 43 major countries in the world in November 2020 based on their economic, demographic, geostrategic, and political characteristics. The most significant common factor appears to be the intensity of interpersonal relations which...

"This book contains an in-depth quantitative analysis of the development of the COVID-19 epidemic in China from its very beginning in December 2019 to early April 2020 when it was brought under control. It begins with adjustments of the official cumulative data on newly confirmed cases and...