The Black death. A great slaughter began in Avignon in January 1348. The
epidemic is presented in two ways. In the first two months was
manifested with fever and bloody sputum and patients die in three days;
elapsed manifested with continuous fever and swelling in the armpits and
groin and patients died within 5 days.
At that time the Black Death by Ignorance was attributed to contamination caused by rats.
Comet Donati, or Donati's Comet, formally designated C/1858 L1 and 1858
VI, is a long-period comet named after the Italian astronomer Giovanni
Battista Donati who first observed it on June 2, 1858. After the Great
Comet of 1811, it was the most brilliant comet that appeared in the 19th
century. It was also the first comet to be photographed. It was nearest
the Earth on October 10, 1858.
It started probably in the steppes of Manchuria, where infected woodchucks were hunted in large numbers by the Chinese immigrants who sold them to Westerners to produce coats. From 1855 it spread throughout China, threatening the Europeans in Hong Kong in 1894, which led to sending teams of doctors and bacteriologists to the region