Outbreak of plague (black death) in Beijing, China. .
● Two people make a checkup by joint examination with experts.
● A disease that reduced the population of medieval Europe to one third. Accompanied by hemorrhagic bronchopneumonia. The skin turns purple and has a high mortality rate.
● There is no record of infection in Korea. In Japan, 958 patients around 1910. In 1926, there was no record of the last two deaths. .