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Bubonic Plague: Spread of Black Death

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Last updated date: 19th Apr 2024
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What is a Bubonic Plague?

Historians used to call this disease with another very popular name which is - “the Black Death disease.” The origin of the bubonic plague was mainly through the diffusion of crops as well as pathogens along the trade routes. This disease is said to be a bacterial disease as it is caused by “yersinia pestis” bacteria. The major source of spreading of this infectious bacteria is said to be the presence of rodent populations as well as fleas which acts as a carrier and which bite animals. Human to human contact leads to the spread of the disease at a very large scale and thus leads to an increase in the number of infected people.


Because of the presence of the limited records, it leads to difficulty for the historians in order to measure the exact plague death toll. According to the report of historians, about 30% to 60% of the human population in European countries got infected by plague between 1347 and 1351. This article will give you the complete details about Bubonic Plague from the origin and other related information. 


Bubonic Plague Origin

The bubonic plague was mainly caused by the bacterium, Yersinia pestis. This bacteria can survive in the rodens and through that, it was spread to other mammals through flea bites. Black death origin in Central Asia was mainly because of the population of marmots, small prairie dogs and rodents. Usually, Marmots won’t have contact with human beings, but rodents have contact with marmots and human populations. 


The fleas carried by bubonic plague also act as a vector for spreading the disease. From the 1330s to the 1350s, Bubonic Plague turned into a great epidemic in China and caused ten million deaths. Through the silk road, traders spread the disease west across Central Asia.  The great historian William McNeill also mentioned it as rest stops for traders. The traders travelling in new routes also spread the disease over lands. 


Important Facts

Disease

Infectious

Caused by

Yersinia pestis

Symptoms

Swollen lymph nodes

Fever

headaches

vomiting

Treatment

By Antibiotics 

( streptomycin

 gentamicin

doxycycline )

Spread by

Insects or Animals


Spread of Bubonic Plague 

Historians analysed the outbreak of bubonic plague in the mid-14th century and found that the spread of disease and trade went hand in hand. Later, it was termed as Black death disease. Initial symptoms of bubonic plagues are certain tumours in the groin or the armpits. Some people get the tumour as an apple or egg or some more or some less. Black death symptoms may spread themselves in all directions and cause black spots or livid appearance in arms, thighs and many more.  


The Plague Across The World 

During the period of 1300s, various Italian cities established the trade relationships with the other regions through the Mediterranean as well as Black Seas. Meanwhile, the Republic of Genoa had said to set up its colony at Kaffa which is said to be present near the  Crimean Peninsula and on the other hand Mongol rulers also said to give permission for it. In 1344 when disagreement between the Mongols as well as the Genoese occurred, it led to the raising of various conflicts among them. The soldiers of Mongols were affected by the plague disease in 1346 and surrounded the city of Kaffa. Mongols had to dispose of the bodies at a separate location and place of a number of soldiers who lost their lives due to the plague. On the other hand, Kaffa soldiers were also said to be affected by this disease. 


Likewise, the plague spread into Asia and hit major cities like Baghdad and Constantinople.  Later, it was spread to Alexandria in Egypt, Damascus in Syria and also crossed the Red Sea and affected people in Mecca. Meanwhile, it entered into the trade network of the Indian Ocean. Through Genoese merchants, this disease was again transferred to Italy. In 1347, this disease landed in the port of Messina and transferred to the north of Europe in the next few years. 


Effect of Bubonic Plague

  • Europe faced a huge death toll while comparing to other continents. 

  • In the end, the total population of Europe became less than the smaller population of China. 

  • The bubonic plague also created huge damage to China and affected an immense volume of traders in the Indian ocean. 

  • This also affected the people of the Middle East and South Asia. 

  • Historians won’t have any proper records on the death of the Bubonic plague but, they approximately said that they killed around 30% to 60% of the European population in such a short span from 1347 to 1351. 

  • The mortality rates varied from place to place. Some European countries faced more than 80% of mortality rate and some countries remain untouched. 

  • The pandemic also led to various and huge economic consequences and is said to have taken multiple lives of both humans and animals. 

  • On the other hand, it does not only lead to loss of lives but also leads to decrease for various goods as well as services in many cities and thus also affects the production of the market. 

  • Even labourers were not demanded high wages because they were scared of the spread of the Bubonic plague


Other Major Effects on Spread  Bubonic Plague 

  • Because of the Bubonic plague, Serfdom disappeared and got opportunities for selling their labour.

  • The increase of labour cost caused landowners to properly utilize labours in efficient and profitable ways for their land and resources. 

  • Through this method, people started getting payments on a rent basis. 

  • The government also tried to control price on wages due to high cost, but this effort remained unsuccessful and met rebellion. 

  • The plague caused huge fear and confusion, which led to violence because of a lack of medical knowledge and control methods to avoid spreading plague disease. 

  • Lepers, Jews, Romani, and other religious and cultural minorities received the blame for spreading and causing the plague disease. 


Conclusion

People in the fourteenth century did not have much understanding about the cause and spread of the plague disease and so many people lost their living hood. They took more time to understand the impact and cause of the plague disease. Even though trade plays an important role in the spreading of the bubonic plague across the world, trade brought huge benefits like increased access to goods and technology and the spreading of knowledge across the world. 


Also, the Black Death reached the people, how cross-cultural contacts along denser trade networks will increase the potential damage and spread of disease. It is also noted that the outbreak during the mid-sixth century did not bring as much damage as the plague outbreak in the mid-fourteenth century, only because of fewer trade networks. Thus in this article, we have covered the origin of the bubonic plague as well as how the black death spread, its symptoms as well as effects in detail. 

FAQs on Bubonic Plague: Spread of Black Death

1. How did the bubonic plague end?

How the plague affected and ended is the most popular theory, it was eliminated by the implementation of quarantines. People who are uninfected remain in their home and stay in quarantine to stay away from the infected people. This created huge isolation among the densely populated areas. 

2. What caused bubonic plague?

The bite of an infected flea spreads the most common form of plague known as Bubonic plague. Microbes like Plague bacillus, Y. pestis entered into the lymphatic system and stayed near the lymph node for replications. This results to cause inflammation of lymph nodes and causes tension and pain in the lymph node, which is known as ‘bubo’

3. Was the bubonic plague a virus? How did the black death spread?

The Bubonic plague was not caused by viruses. It was usually caused by the bacterium, Yersinia pestis. The black death mainly originated from the dead and decayed organisms and spread through trades.