Will we ever be able to eliminate all diseases? Unlikely. It is possible to destroy a specific pathogen, as happened with the smallpox virus, but another virus will take its place ... After all, all life evolves, including viruses. With just the thought of an endless series of epidemics, it becomes scary to live. But you need to live! This book will help you understand what epidemics are and what viruses are, how to get along with them, how to protect yourself and what to hope for in the future. We will consider in detail what coronaviruses are, and we will arm ourselves with knowledge of how to assess our condition as correctly as possible and not panic over contrived reasons. Knowledge is power! Forewarned is forearmed!