• Question: what is the worst epidemic that ever existed

    Asked by 262epdj29 to Rosie on 12 Jun 2017.
    • Photo: Rosie Fok

      Rosie Fok answered on 12 Jun 2017:

      Either the 1918 Influenza (virus) pandemic, which is thought to have infected about 500 million people and killed about 200 million people in 1918 to 1920, or the black death (the plague, caused by a bacterium Yersinia pests) which is thought to have killed 30-60% of the population of Europe in the 14th century.