Warning about the risk of humans transmitting the virus back to bats, causing the appearance of SARS-CoV-3

In the future, a new coronavirus (e.g. SARS-CoV-3) may emerge after humans transmit the SARS-CoV-2 virus to bats.

Warning about the risk of humans transmitting the virus back to bats, causing the appearance of SARS-CoV-3
Warning about the risk of humans transmitting the virus back to bats, causing the appearance of SARS-CoV-3

The above information was given by Professor Wang Linfa (Duke-NUS Infectious Diseases Project, Singapore) at a conference on October 6.

According to Professor Wang, most scientists believe that the origin of the SARS-CoV-2 virus that causes COVID-19 is related to some species of Asian bat. The virus is transmitted from bats via "X-mediated" (pangolins or civets), before being transmitted to humans.

"After that, the virus continued to spread from person to person. But what surprised us is that this virus can also be easily transmitted from person to animal," said Mr. Wang.

There have been some reports of "pets" transmitting the SARS-CoV-2 virus from their owners, but there is no evidence of the reverse route of transmission, from "pets" to humans.

Professor Wang said: "It would be worrisome if humans could transmit the virus to new hosts, such as bats in the US mainland, even though this is not a natural 'den' for the virus."

Mr. Wang posed a situation where a person with COVID-19 left half-eaten fruit on the roadside, and a bat continued to eat this fruit and then spread the virus.

"Bats have a very unique immune system. They can carry the virus in their body without developing disease. However, the virus can still mutate and be transmitted to the X, Y or Z intermediate species. When eliminated If this mutant virus reaches humans, it will probably become SARS-CoV-3," Professor Wang warned.

In theory, the virus would genetically change to adapt each time it "jumps" from one species to another.

"The more it spreads between species, the more the virus mutates. And one of these new viruses can become SARS-CoV-3."

To deal with a similar pandemic in the future, Professor Wang recommends three stages of preparation.

The first stage is before the virus appears. Scientists need to study viruses in different animal species, especially those that humans trade and consume the most.

The second stage is early warning. When the number of severe cases is unusually high in intensive care units, it could be a sign that a virus has emerged.

In the final stage, when the virus begins to spread, countries need to focus on developing vaccines and treatments.

Professor Wang is a member of the research team that successfully cultured the SARS-CoV-2 virus in early 2020, making Singapore the third country in the world (besides China) to successfully culture the virus to start production. Export your own test kit.

He was also a member of the Emergency Committee convened by the World Health Organization (WHO) during the early stages of the outbreak. On January 30, 2020, this committee informed WHO that the SARS-CoV-2 virus outbreak was a "public health emergency".

Google Tech News

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