Table of Content: Hide 1. The Plague of Marseille 2. The First Cholera Pandemic Occurred in 1820 3. The Spanish Flu of 1920 4. Corona Virus in 2020 The entire world is currently dealing with a major epidemic, the coronavirus, also known as Covid-19. Even though we live in the modern era, there have been … Continue reading Every 100 Years, a Plague Threatens Humanity, and It Always Appears in the Years Ending in 20