Black plague

The Black Plague also called the Black Death is one of the deadliest pandemic in human history. We do not exactly what provoked it but it is thought to have been caused by a bacterium named Yersinia pestis (Bubonic plague).

The name of the Black Plague comes from a striking-late sign of the disease in which the skin would blacken due to sub epidermal hemorrhages, and the extremities would darken with gangrenes.

This pandemic was characterized by buboes (swelling in lymph nodes). It spreads by fleas with the help of animals like the black rat. But this hypothesis is questioned nowadays. New research suggests that the pandemic is lying dormant.

There was two kind of plague the bubonic plague with symptoms including fever, headaches, painful aching joints, nausea and vomiting and a general feeling of malaise. Those who contracted this Plague died within eight days, only 1 out 5 survived.

The second plague was the pneumonic plague; the symptoms were fever, cough and blood-tinged sputum. Its mortality rate was of ninety to ninety-five percent.

Apparently the disease appeared first I Central Asia (India) or perhaps in Africa, then it spread in Europe in the 1340s. It killed about 75 million worldwide (about 25-50 million only in Europe).

It is the worst pandemic in the word in the Middle-Age. It had killed about 375 million people in 1400.

Then this pandemic occurred many times in several locations but did not kill that much people and did not spread so widely. It happened in Italy (1629-1631), in London (1665-1666), in Vienna (1679) and in Marseille (1720-1722).