You may be wondering What is Coronavirus, How Coronavirus Evolved? And How It Started To Spread Rapidly?
This article consists of all the facts about the evolution of Coronavirus from the beginning.
There were various theories about SARS-Cov2 coronavirus being developed in the lab, all these theories and rumors were proved wrong by scientists and biologists working on the microscopic structure of the virus.
The genome of SARS-Cov2 was compared with the earlier known coronaviruses (SARS, MERS, and SARS-CoV-2), which cause severe diseases and along with HKU1, NL63, OC43, and 229E, which cause some mild infections.
They wrote in the journal nature medicine published on 17th March, “Our analyses clearly show that SARS-CoV-2 is not a laboratory construct or a purposefully manipulated virus”.
The structure the of the virus is nearly same as the SARS, but it has extra spikes like proteins on its surface called a receptor-binding domain that it use to grab the outer walls of the host cell and stick to it
Scientists found that the virus is so good at attaching to a human cell’s receptor, it is a result of natural selection not genetically engineered. These receptors are responsible for blood pressure regulation.
The Evolution Of Cov-2 – How Coronavirus Started
The Cov2 and SARS, which causes severe acute respiratory syndrome are very closely related in structure, about the spike proteins scientists claim that it can’t be possible to develop these changes using genetic engineering but nature which evolved the virus to develop these spikes according to the principle of natural selection. Using genetic engineering, these kinds of effective grabbing proteins can’t be generated.
The leading theory behind this is that the virus is transferred from a bat to a pangolin before attacking humans.
The evidence for this theory is pangolin has a similar kind of respiratory problem caused by viruses that resemble the SARS-Cov2; these viruses are known but do not affect humans.
The spikes in the Cov2 are also found in the viruses that affect bats and pangolins. So it is how scientists relate the evolution of coronavirus from bats and pangolin.
The first case of COVID-19 was found in the Wuhan district of china. In the meat market of Wuhan, people sell pangolins. So it could be possible that a bat infected a pangolin that was eaten by a man who first developed the diseases.
Why Bat Shouldn’t Not Be Blamed For Coronavirus Pandemic
Well, a virus was found in the horseshoe bats of china that is exceptionally similar to Cov-2. It is posited that bats are the reason for the spread of the disease.But it is contradicted by the fact that bats are extremely mobile mammals. If they were the vendors of the diseases, then the spread would be much greater than the current situation. The scientist and the zoologist believe that bats should not be blamed for the diseases only humans and its activities are the real cause of the problem.
When a bat flies, it increases its body temperature, which looks similar to fever, as explained by Andrew Cunningham, Professor of Wildlife Epidemiology at the Zoological Society of London. This activity poses a problem as the pathogens inside the bats have developed the resistance to temperature. If these pathogens enter a human body, our immune system uses fever as a defense system to fight the pathogens. Still, since they developed the resistance to a high temperature, then it will be difficult to fight these pathogens.
Bats get stressed when their shelters are shed due to deforestation, which made them develop warm sore viruses. Therefore, bats are not the one to be blamed instead of the humans and their unusual activities, which are resulting in these kinds of problems.
The wet markets of China are selling the animals both as pets as well as delicacies it allows the viruses to shed and enter other animals in the market. There are other animals in the market that are more vulnerable than bats.
We are transporting the animals for medicine, destroying their shelters from areas more populated by humans. In the wet markets of china, the condition of animals is even worse.
Predictions About Coronavirus Outbreak
Well, the research is going on, scientists are collecting more evidence about the spread and origin of the virus. There are stories of this being predicted earlier in the books like ‘Eyes of Darkness’ by Dean Koontz and ‘End Of Days’ by Sylvia Browne. These books were written long before 40 years back. These facts aroused the suspicion that the conspiracy of the virus was engineered in the lab. Well, there is no evidence or sign of such a conspiracy.