Pangolin or Tortoise? Who First Spread The Coronavirus

The virus initially had contact with several of its victims in the Wuhan marine fish market.

So far, scientific evidence suggests that the virus has been transmitted from wild bats to humans through another animal, which was the "intermediate home" of the virus.

The World Health Organization says research has shown what the "natural source" of the virus was, but some scientists say it may never be known exactly how the first person became infected.

It is unknown at this time what he will do after leaving the post.

However, scientists are somehow convinced that the wildlife business is a possible way for the virus to enter the human body.

The virus originated from bats and from there it became the second animal to enter the human body.

Researchers say that in such a trade, the disease is transmitted from one species of animal to another. There have been similar outbreaks of other viruses before. And this is exactly what happened this time.

Dr. is leading the research on Covid Nineteen in the World Health Organization. Maria van Kerkhov. He told the BBC: "We knew such an epidemic would happen. The main question was - when will it happen?"

Chain of transmission

Infectious disease experts agree that in the same way that other diseases enter the human body, the virus first passes from one animal to another without being detected.

Andrew Cunningham, a professor at the Zoological Society in London, explained: "We have been worried about this for some time.

"In recent times, the incidence of human-to-animal transmission has increased, as humans are exposed to wildlife more than ever before, and their presence in the wild has increased."

In Guangzhou's wildlife market in China, government officials confiscated Gandhagokul (Civet) to stop the spread of SARS.

Covid Nineteen is not the first virus to spread through animal chains. The viruses that have spread in this process before are our familiar names - such as Ebola, rabies (rabies), SARS, Mars. And all of these originate from bats.

Scientists have done extensive research on the ability of bats to infect humans - especially after the outbreak of SARS. In 2016, scientists also collected large samples of coronavirus genes linked to SARS infection from a cave in China.

Scientists have found in these studies that the structure of this bacterium is such that it has the ability to penetrate the cell membrane of a new animal and enter the cell.

Scientists have seen the presence of this chemical in the genes of all types of coronaviruses. In particular, the protein in SARS cove to virus breaks down the immune walls of cells and infects them, says David Robertson, a virologist at the University of Glasgow.

Coronavirus germs under the microscope

This is why coronavirus can be easily and quickly transmitted from one person to another. And the wildlife market has played a big role in transmitting the bat virus to human cells.

Trading and transmission

We have heard of the "onset" of the virus from the Wuhan Wildlife Market. But the animal that had the pathogen in its body or literally the germ - it was not in that market.

"The fact that a group of people involved in that market were first infected is circumstantial evidence," said James Wood, a professor at Cambridge University.

"The infection could have come from somewhere else, and incidentally infected a group of people in that market. But since the virus came from the animal's body, it's natural to look for an argument for its involvement with the market."

Professor Cunningham agrees that the markets in which wildlife is traded are hotspots for the virus to enter the bodies of other animals. "In these open markets, many kinds of animals are traded in unhealthy environments. Different species of animals are kept together in unhealthy conditions. As a result, there is a high chance of spreading the virus from one species to another."

A variety of wild animals that are sold for pets have protection arrangements to prevent human disease.

There is a history of transmission from forest animals to humans by any other means in the past. Such as farm animals, game animals or animals bought in the market.

Professor Wood says, "The SARS virus entered the human body due to an epidemic in a special species of odor gum called palm civet. In South China, this odor is eaten by humans and sold in the market."

"This information is very important for research. Because then an epidemic broke out in palm civet animals. The epidemic in animals needed to be brought under control first to prevent the virus from spreading to humans," says Professor Wood.

The animal that is important in the chain of transmission of this new covid ninetin - the sources that scientists have found pointing fingers at in order to trace the virus that has entered the human body are mink (bezi species), ferret (neul species), and even turtles. .

A similar virus has been found in the bodies of smuggled pangolins or banrui. A virus closely related to Kovid Nineteen has been found in the body of this animal, which was smuggled into the Chinese market and sold.

However, scientists say they have not seen any link between the suspected species and the outbreak. Scientists have only confirmed that their work with these wild animals and their use for commercial reasons has identified these animals as endangered.

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"Direct contact of humans or pets with wildlife is an important part of this study," says Professor Wood.

He says the global livestock market is a big business that is very difficult to control.

"Many poor people depend on these animals for their livelihood. If these trades are banned, then these trades will be smuggled. Then these trades will not be known."

The World Health Organization has already called for a healthy market for such animals. Just as the virus spread from Uhan's market, so did Ebola from wildlife markets in Africa.

But it will never be possible for scientists to say for sure which animal first entered the body of the coyote Nineteen bat, which actually infected the first infected person, and the search for the "second home" of the horrible bacterium responsible for the death march around the world. Dhaka will remain a mystery.