Plague, one of the deadliest bacterial infections in human history, caused an estimated 50 million deaths in Europe during the Middle Ages when it was known as the Black Death.
원문출처 : https://www.cnn.com/2020/08/19/health/bubonic-plague-2020-california-wellness/index.html
원문출처 : https://www.cnn.com/2020/08/19/health/bubonic-plague-2020-california-wellness/index.html