Find the route of Black Death

Black death once caused one of the most terrible disasters in human history and killed several tens of millions of medieval people, but until now scientists have discovered the process of its spread.

Journey of pandemic "Black Death"

A picture illustrates the deadly scene of a city in Europe when the plague broke out in the middle ages.(Photo: deathreference.com.)

Black death was the name of plague in Asia and Europe from the 14th century to the 18th century. The outbreak broke out more than 100 times in Europe during this period. This is one of the most terrible pandemics in human history . It is estimated that this pandemic has killed between 30% and 60% of the population of Europe and reduced the global population from about 450 million people to between 350 and 375 million in 1400.

The manifestation of the disease is lymph nodes throughout the body. When blood vessels in the lymph nodes break, the blood dries and turns into black lumps that interfere with blood circulation. Due to the presence of black blood on the victim's body at that time people called the terrifying disease Black Death. Internal bleeding also occurs in internal organs such as liver, lungs and leads to death. The disease can be spread from person to person through respiratory and respiratory fluid.

Discovery said that scientists have long suspected that a bacterium called Yersinia pestis causes Black Death, but they still do not know where the disease comes from and how it spreads around the world. Many assumptions were made, such as bacteria originating from China or Central Asia, then they went to Europe by sea by merchant boats, or by Asian trade delegations to Europe.

Scary image depicting 'Black Death' in Europe

According to AFP , a team of scientists from England, Ireland, China, Germany, France, Madagascar and the United States genetically mapped the 17 strains of Yersinia pestis to find their common ancestors. When finding the common ancestor of Yersinia pestis, scientists will determine the origin of plague as well as its pathway.

Results showed that the common ancestor of 17 strains of Yersinia pestis bacteria originated in China.

' Translation appeared in China more than 2,600 years ago. Then it began to spread to Western Europe and Africa through the Silk Road from about 600 years ago. The disease went to the United States through the Hawaiian Islands in the late 19th century. It went to California through ports in the cities of San Francisco and Los Angeles before advancing into American territory , 'the French Natural History Museum, a agencies participating in the study and statement.

Yersinia pestis bacteria exist on many animals of rodents, including mice. They spread from animal to animal through fleas. If fleas suck the blood of an infected animal and then suck on human blood, the disease will spread to humans. Once infected, the patient is estimated to survive only 60 to 180 days.

The terrible devastation of Black Death has led to many major changes in European society such as the birth of many new religions or the fundamental economic and social transformation. These changes create profound effects on Europe 's historical process. Scientists calculate that Europe takes 150 years to recover its population as before the pandemic. Later plague broke out again here and it only disappeared in the 19th century.

In October 1897, a Jewish Jewish doctor named Vladimir Havkin found a way to treat the plague and control this horrifying epidemic.

Thanks to his treatment by combining streptomycin, chloramphenicol, tetracycline, gentamicin and doxycyline . the disease has been controlled.

And the journey of the official 'Black Death' epidemic is terminated worldwide.