One of the worst pandemics in human history, the Black Death, along with a string of plague outbreaks that occurred during the 14th to 19th centuries, was spread by human fleas and body lice, a new study suggests.
원문출처 : http://www.cnn.com/2018/01/16/health/black-death-plague-spread-by-humans-intl/index.html
원문출처 : http://www.cnn.com/2018/01/16/health/black-death-plague-spread-by-humans-intl/index.html