#e <t>plague<d>550(50)<n>bubonic plague<c>Middle East<info>This epidemic killed an estimated 100 million people in the Middle East, Europe, and Asia during the 6th century.
#e <t>plague<d>1347<e>1351<n>Black Death<c>Europe<info>This outbreak of the Bubonic plague killed one-fourth to one-half the population of Europe, or about 75 million people.
#e <t>medical<d>1500<c>Switzerland<n>first "successful" Caesarian delivery<info>the first recorded in which both mother and child survived