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what role did rats play in the plague

by Ms. Sallie O'Connell Published 2 years ago Updated 1 year ago
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In cases of plague since the late 1800s—including an outbreak in Madagascar in 2017—rats and other rodents helped spread the disease. If Y. pestis infects rats, the bacterium can pass to fleas that drink the rodents' blood. When a plague-stricken rat dies, its parasites abandon the corpse and may go on to bite humans.Jan 15, 2018

Full Answer

Did rats really cause the plague?

The Black Death is widely believed to have bubonic plague caused and spread by filthy disease ridden rodents such as the common black rat found throughout much of Europe and other parts of the world affected by the Black Death. That said, the exact scientific or biological cause and the origin is still officially undetermined.

Do rats still carry the plague?

Rats do spread the plague, but to be more accurate, its dead-rats. Rats tend to have parasites given the places where they hang out. These parasites drink their blood and when the rodent perishes, they need to feed and hop onto something else. On the occasion they meet a human, thus spreading the plauge.

What role did the rats play in spreading the plague?

The plague, which is the disease that caused the black death, is generally spread by blood. The rats would carry it, and fleas on the rats would transfer it from the rats to people. +1 vote! Please wait... The Black Death was carried by the fleas on the rats. The people in those times were scared of witchcraft.

Are rats innocent of spreading the Black Plague?

Scientists now believe the plague spread too fast for rats to be the culprits. Rats have long been blamed for spreading the Black Death around Europe in the 14th century. Specifically, historians have speculated that the fleas on rats are responsible for the estimated 25 million plague deaths between 1347 and 1351.

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What model is most accurate for explaining the spread of the plague?

A flea infected with the plague. (Credit: Smith Collection/Gado/Getty Images) In most of the cities, the model that focused on fleas and ticks on humans was the most accurate model for explaining the spread of the disease.Though it may come as a surprise to most readers, previous studies have backed up these findings.

Why did researchers simulate the Black Death outbreaks in European cities?

In a study published in January 2017 in the Proceedings of the National Academy of Sciences, researchers simulated Black Death outbreaks in European cities to try and understand how the plague was spread.

What was the cause of the Black Death?

Rats have long been blamed for spreading the Black Death around Europe in the 14th century. Specifically, historians have speculated that the fleas on rats are responsible for the estimated 25 million plague deaths between 1347 and 1351.

Did the plague spread fast?

The consensus seems to be that the plague spread too fast for rats to be the culprit carriers. “It would be unlikely to spread as fast as it did if it was transmitted by rats,” Nils Stenseth, a professor at the University of Oslo and co-author of Monday’s study, told BBC News.

When did the rat carry the plague?

From the 1 st great plague pandemic called the Justinian Plague in 541 AD that changed the course of the Roman Empire to the Black Death in the 14 th century to the 3 rd plague pandemic that spread across the world from the port town of Hong Kong in 1894, the rat had been carrying the plague.

How long has the plague been spread by rats?

The rat, however, was seen as having spread the plague to all parts of the world for centuries and not just since 1894.

Why were rats used as rat catchers?

The legend of the Pied Piper of Hamelin is about a similar rat catcher employed to rid towns of rats. These rat catchers used to breed rats for the popular blood sport ...

What profession was a rat catcher?

The profession of rat catcher morphed into the Rat Officer on ships, who had to inspect the ships for rats. Ships also kept cats to rid them of rats. But it was almost impossible to rid ships of rats as ships provided rats with ample housing and food.

What does C F White write about rats?

Because of this, C F White writes in The Proceedings of the Royal Society of Medicine in 1935: “it is certain that good homes for rats will not long remain untenanted and the methods of deratization must be repeated again and again.

What antibiotics helped the plague?

This led to development of drugs and antibiotics such as streptomycin that helped attack the plague bacteria and the plague lost its potency though small outbreaks did happen. Also Read: Pandemic In History: ‘Shipping’ The Virus. coronavirus pandemic plague.

Why did the plague happen?

The plague, the deadliest recurring pandemic in history, primarily happened because of rats, which travelled on the ships carrying the plague.

How did the plague affect society?

The plague profoundly altered society. Society buckled as people at all levels, from nobles to peasants, died in large numbers. Renters died and were not replaced, weakening the power of the landed gentry. Peasant revolts took place in England, France, Belgium and Italy. Entire villages were wiped out.

Where did the plague come from?

From Italy the plague swept across Europe, replicating the tragedy of Genoa over and over again. The plague crossed the continent in waves and from multiple points of entry, not just Genoa, but typically through trading routes. By August 1348, it had reached southern England, and by 1350 had breached Scandinavia. By 1353, it had reached Moscow.

What is the bubonic plague?

What was the plague? Scientists believe it was the bubonic plague, also known as the bacterium Yersinia pestis. Yersinia pestis typically infects the Oriental rat flea, which in turn infects small rodents such as mice, rodents and squirrels. As their rodent hosts die, infected fleas seek and bite humans. Alternately, bubonic plague can be transferred from human to human via bacterium in the infected person’s cough, although this is rare and requires extremely close contact.

What did Boccaccio describe?

Boccaccio described a world where ignorance about the plague and how to combat it spread death and paranoia. People thought that merely touching the clothing of the deceased was enough to contract plague, and shunned contact with even friends and family to avoid even the chance of contracting it. City dwellers walked through ...

How long does it take for the plague to show symptoms?

A person infected with plague develops symptoms within two to six days, while a person exposed via cough can develop it within one to three days. The mortality rate for plague in the United States before antibiotic treatments were discovered was approximately 66 percent. There is no vaccine.

What was the Black Death?

The Black Death was a tremendous tragedy for Europe, but it was also the impetus for societal upheaval. The Europe that emerged was traumatized but more dynamic than ever, set on a slow path of philosophical, scientific and geographic discovery that eventually spread worldwide.

When was the first plague in Europe?

The first appearance of the plague in Europe was at Genoa in October 1347. One hypothesis is that Italian traders caught the plague during the Mongol siege of the Crimean city of Caffa, where the attackers allegedly hurled the bodies of plague victims over the city walls.

How long has the plague been around?

The scientists hope their work will lend insight into the evolution, adaptation and impact of plague, which has affected mankind for some 5,000 years and continues to do so today in some regions around the world. Outbreaks in recent years have surfaced in Madagascar, the Democratic Republic of Congo and Peru.

What were the symptoms of the Justinian plague?

Its victims suffered some of the same symptoms the Roman historian Procopius had described when writing about the earlier plague: fevers, delirium and mysterious black swellings in the groin, under the arms and behind the ears. Though the impact of the Justinian plague was clearly on the same scale as that of the Black Death, ...

How many mutations were found in the Justinian Plague?

For the new study, the researchers completely reconstructed the genome behind the Justinian plague, including 30 newly identified mutations and structural rearrangements that occurred as DNA cells split apart and replicated themselves. Data from their reconstruction also suggested the particular Y. pestis strain behind the earlier plague was more genetically diverse than previously thought.

Where was the Y pestis skeleton exhumed?

The two skeletons used in the new study, which was published in the journal Molecular Biology and Evolution, were exhumed a half-century ago from Altenerding, a plague burial site located in southern Germany, near Munich. The researchers were able to use a single tooth from one of the skeletons—that of a woman between the age of 25 and 30—to extract the specimen of Y. pestis that they used to reconstruct the pathogen’s genome.

How many cases of the plague were there in 2015?

Outbreaks in recent years have surfaced in Madagascar, the Democratic Republic of Congo and Peru. According to the World Health Organization, 320 cases of plague were reported worldwide in 2015, including 77 deaths.

Who found the skeleton of the Y pestis?

According to one of the study’s co-authors, Michaela Harbeck, the skeleton in question was found just kilometers from the skeletons analyzed by a team led by Dave Wagner, a microbial geneticist at Northern Arizona University, in an earlier study. Wagner’s research linked Y. pestis to both the Justinian plague and the Black Death, ...

Was the Black Death caused by a different strain of Y pestis?

Harbeck and her colleagues confirmed this link, but concluded that the Black Death wasn’t directly descended from the earlier plague; instead, it was caused by a genetically different strain of Y. pestis.

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