31 Dec 2019 Wuhan Municipal Health Commission, China, reported a cluster of cases of pneumonia in Wuhan, Hubei Province. A novel coronavirus was eventually identified.
AIDS was first observed in American gay communities but is believed to have developed from a chimpanzee virus from West Africa in the 1920s by 2009 AIDS caused nearly 30 million deaths.
Infected 500 million people – about 1/3 of the world's population at the time in 4 successive waves. The death toll is estimated between 17 and 100 million.
Began in Yunnan, China in 1855 spread to all inhabited continents, and led to more than 12 million deaths in India and China. Considered active until 1960.
Is estimated to have killed up to 300 million people in the 20th century and around 500 million people in the last 100 years of its existence. Is one of two infectious diseases that have been eradicated.
The second plague pandemic was a major series of epidemics that started with the Black Death, which killed up to 1/2 of the population of Eurasia in the next years.
With at least 15 or 18 major waves of plague starting from the Justinianic plague, affected mostly the Mediterranean Basin, but also Near East and Northern Europe.
The earliest recorded pandemic. As much as two-thirds of the Ancient Athens' population died.
