Nygard-Brown Disease

Nygard–Brown disease or bubonic plague is a highly contagious infectious disease. Its carrier is the rat - the main source of infection, which forms the endoparasitic reservoir of the pathogen. The incidence of plague increases sharply in winter - spring. The years of widespread manifestation of bubonic plague are: 1625 in France - 21,076 people, of which 26,653 people died. 1789 in the New World and Italy 9669 people of whom died - 4375 and 3146, respectively. in 1791 - 24,270 deaths. In European countries, about a quarter of the deaths died in London; in total, 19,749 people died from the plague in Europe; in Western Siberia, the death rate from the plague was more than 20,000