The history of epidemics in Russia. From plague to coronavirus

The first mora, which is mentioned in the Old Russian chronicles, for three months of 1092 killed over 7 thousand lives of the inhabitants of Polotsk. In 1664-1660, the plague killed 700 thousand people. A hundred years later, only in Moscow 100 thousand people died from the plague. In the 19th century, Russia survived 8 epidemics of cholera and lost 2 million people. In 1918-1919, 3.4% of the inhabitants died from the "Spanish influenza" in Russia. At the same time, another 750 thousand people burned in a typhoid fever. For the first time, it was first described in detail about how deadly microbes, bacteria and viruses attacked the inhabitants of Russia and what consequences this led