The microbiologists of the University of California, Berkeley, considered the laboratory leak hypothesis of the COVID-19 origins based on the research of the genetic fingerprint of CoV-2, the novel coronavirus responsible for the disease Covid-19, The Wall Street Journal
According to the study, the sequenced samples of the SARS-CoV-2 genome indicate that it was inserted into COVID in the laboratory.
"In the entire class of coronaviruses, which includes CoV-2, there was no combination of CGG-CGG, which would arise naturally. This means that the usual way for viruses to acquire new skills, in this case, does not work," experts said.
Scientists claim that SARS or MERS coronaviruses doesn't have a CGG-CGG combination and viruses can not get it naturally.
Experts also questioned why the virus repeated the combination that researchers would do in the lab. They acknowledge, there is still a small chance it could happen accidentally.
SARS and MERS viruses began to evolve as they spread among humans, with the SARS-CoV-2 showed no changes from the original extremely aggressive version. This is considered as evidence of a long adaptation period SARS-CoV-2 passed before spreading. The virus can be "trained" in the laboratory, growing in the human cells before it achieves its full efficiency, experts say.
Since the beginning of the COVID-19 pandemic, there have been various hypotheses explaining the origins of the coronavirus infection. Earlier, former US President Donald Trump demanded China pay $10 trillion in reparations for its handling of coronavirus pandemic. In March 2020, emails of the United States’ top federal virologist Dr. Anthony Fauci released to the public, which contained suggestions that the virus could potentially be engineered. The WHO-formed committee that visited the Wuhan facility concluded that no evidence appeared to support a human-made origin of the SARS-CoV-2 virus.
US President Joe Biden has asked the national intelligence to redouble efforts to investigate the possibility that the pandemic began with the lab "escape" from the Wuhan Institute of Virology.