Relative of SARS-CoV-2 virus found in bats in Cambodia – News

Coronavirus-related SARS-CoV-2, the virus that causes the epidemic, was discovered by researchers on a cold foot to search Cambodia, according to an article published in a scientific journal. nature Monday (23). The article also mentions the presence of another coronavirus in close proximity to SARS-CoV-2 in Japan.

Viruses are the first known “relatives” of SARS-CoV-2 to be found outside China. Evidence suggests that SARS-CoV-2 originated from horse bats that transmit the virus to humans. The presence of a host host is also considered, but this is still a service, the story says.

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The Cambodian virus was found in two horse bats (Rhinolophus shameli) was seized in the north of the country in 2010. The report stated that the virus that causes the virus had not been tracked, which does not allow it to be determined if it had any part in the epidemic.

The researchers believe that if the virus is actually associated with a pandemic virus or with the parent of a new coronavirus, it may provide important information about SARS-CoV-2, which contributes to the accurate detection of the onset of the epidemic.

To find out, the virus has to share more than 97% of its genome with SARS-CoV-2, he says.

If the relationship is too far away, these findings may be helpful in understanding the different species of the coronavirus family. This was the case with the Rc-o319 virus, which was identified in the Japanese bat (Rhinolophus cornutus) was captured in 2013. According to the report, the virus shares 81% of its genome with SARS-CoV-2, considered a distant relative.

To date, the most well-known relative is RaTG13. The virus was found in bat bats (Rhinolophus affinis) in the Chinese province of Yunnan in 2013.

“This new virus must be at least 99% identical to SARS-CoV-2 in order to be considered the parent of the current epidemic.” The genes RaTG13 and SARS-CoV-2 differ only 4%, but these differences represent between 40 and 70 years of evolution, although they share a single parent. Although separated by decades, viruses are similar enough to use the same receptor to enter cells. Cell research shows that RaTG13 can infect humans, “the article states.

Some coronaviruses have been found in Rhinolophus bats and pangolins seized between 2015 and 2019, which are now known to be closely related to SARS-CoV-2, he says.

“SARS-CoV-2 was probably not a new virus that suddenly appeared. Viruses in this group were pre-existing in 2019,” said Tracey Goldstein, director of the One Health Institute at the University of California, United States, who is part of a team of researchers. in Cambodia. nature.


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