The information was disclosed by Zhang Yong, assistant director of the China Institute of Infectious Disease Control and Prevention.
According to Zhang Yong, the strain of SARS-CoV-2 virus at Tan Phat Dia market (Beijing) originated from Europe, but “older” than the most recent virus in Europe.
“In addition, a large number of samples at Tan Phat Dia market showed that the virus had been in the market for some time. If the virus appears in this city in a short time, there won’t be so many positive samples. Even so, we still need more data before making conclusions about the origin of the virus, ”Zhang said.
Follow Global TimesGenome sequencing is one of the main methods for determining the longevity of a virus.
“We first need to account for the entire genome, and then put the virus strains next to each other, to see which viruses have more mutations. The strain has more mutations than the newer strains, while the type with fewer mutations is closer to the original strain, also known as the “nothing”.
These strains have been circulating for a longer period of time than recently discovered viruses, ”said Liu Jun, a researcher at the National Institute for Infectious Disease Control and Prevention.
Earlier, the sequencing results of the SARS-CoV-2 virus genome in Beijing showed that the virus originated from Europe, and has a more contagious characteristic than the virus strain in China.
Notably, the virus appeared in dense concentrations at the seafood counter, prompting many experts to speculate that the virus may have entered China from Europe through frozen seafood.
According to CGTN