The US commented on China's position on the study of the source of the pandemic

"We continue to urge China to provide the necessary access to data and samples, which is necessary so that we can understand and prevent the next pandemic," TASS quoted her as saying.

Earlier, scientists from China, citing an article in the journal Science China Life Sciences, stated that COVID-19 is of natural origin.

Director of the Wuhan National Biosafety Laboratory Yuan Zhiming said that the Wuhan Institute of Virology said there was no evidence of a possible leak of coronavirus from the laboratory.