The World Health Organization said on Monday that the international expert team on the COVID-19 origin-tracing mission in Wuhan was "independent" and had no affiliation.

"So many times I hear that this is a WHO study or investigation. It's not," WHO Director-General Tedros Adhanom Ghebreyesus told a virtual news conference from Geneva, stressing that it was an independent study composed of independent individuals from 10 institutions.

At Monday's news conference, Peter Ben Embarek, head of the international expert team in Wuhan, said that the report would be a "consensus document".

"The international teams and the Chinese counterparts have already agreed on the summary reports," he said.

The expert team, composed of 17 international scientists and 17 Chinese counterparts, is working together to publish an interim joint report, in which they would "make recommendations for future studies", said Embarek.

He said that longer studies would be needed to "explore some of the hypotheses and advance our understanding about the origin of the virus".

In this respect, Mike Ryan, executive director of the WHO Health Emergencies Program, warned at the news conference of the difficulty of finding complete consensus.

"Achieving an absolute consensus around every point is almost an impossibility in science. What we can do is reach conclusions based on the evidence before us," he said.

Earlier last week, the international team concluded its monthlong research in Wuhan and presented its initial findings at a news conference in China, ruling out the hypothesis that the virus escaped from a laboratory.

A WHO source said that the team is working on a summary report which is expected to be published this week, and that a full final report will come out in the coming weeks.

Xinhua