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No more deadly SARS-CoV-2 strain

May 7, 2020

Viruses naturally accumulate mutations, but most have no effect.

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No more deadly SARS-CoV-2 strainNo more deadly SARS-CoV-2 strain

This story originally appeared on high level

A preliminary study by Chinese scientists in March suggested that there could be two strains of the new corona virus that cause infections, more “aggressive” than the others.

However, a new study published by the University of Glasgow in which they analyzed samples of SARS-CoV-2 says that their results showed this previous work indicating that there were two different tribes was inaccurate.

Viruses, including those that cause Covid-19, naturally accumulate mutations or changes in their genetic sequence as they spread in populations. However Most of these changes have no impact on the biology of the virus or the aggressiveness of the disease it causes.

It is important that people do not worry about virus mutations. They are normal and are expected when a virus gets through a population. However, these mutations can be useful because they allow us to trace the history of the transmission and understand the historical pattern of global spread, “said Oscar MacLean, director of the study, which was published in Virus Evolution magazine.

Nearly 200 genetic mutations from COVID-19

Genetic analysis of samples from more than 7,500 people infected with COVID-19 suggests that the new coronavirus will quickly spread around the world and adapt to its human hosts at the end of last year, scientists said on Wednesday.

A study by scientists from the University College London Institute of Genetics (UCL) found nearly 200 recurrent genetic mutations from SARS-CoV-2 and according to the researchers, it would show its development if it spreads among the population.

Francois Balloux, the UCL professor who co-led the research, said the results showed that much of the global genetic diversity of SARS-CoV-2 is found in all of the hardest hit countries. This indicates that the virus has spread around the world since the epidemic began.

“All viruses mutate naturally. Mutations per se are not a bad thing and there is no evidence that SARS-CoV-2 mutates faster or slower than expected,” said Balloux. “So far we have not been able to say whether SARS-CoV-2 will be more or less deadly and contagious.”

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