Peter Ben Embarek, the top of the World Health Organization (WHO) mission, said it was “very far-fetched” that the infection spilled from a lab in the city of Wuhan.
He said more work was expected to recognize the wellspring of the infection.
The examination could now zero in on South East Asia, one master said.
The WHO group are at present toward the finish of their examination mission.
Wuhan, in China’s focal Hubei region, is the primary spot on the planet that the infection was identified in 2019. From that point forward, in excess of 106 million cases and 2.3 million passings have been accounted for around the world.
Dr Embarek told a question and answer session the examination had uncovered new data however had not drastically changed the image of the flare-up.
Specialists accept the infection is probably going to have started in creatures prior to spreading to people, yet they don’t know how.
Dr Embarek said work to recognize the birthplaces of Covid-19 highlighted a “characteristic repository” in bats, however it was impossible that this occurred in Wuhan.
He said distinguishing the creature pathway stayed a “work in advancement”, yet that it was “no doubt” to have moved over to people from a middle person species.
The specialists additionally said there was “no sign” that the infection was flowing in Wuhan before the primary authority cases were recorded there in December 2019.
Liang Wannian, a specialist with China’s Health Commission, said Covid-19 might have been in different areas before it was distinguished in Wuhan.
The group called for additional examination concerning the chance of “cold chain” transmission, alluding to the vehicle and exchange of frozen food.
Dr Peter Daszak, an individual from the WHO group, said the emphasis on where the inceptions that prompted Covid-19 may be, could be moved to South East Asia.
“We’ve done a ton of work in China and on the off chance that you map that back it begins to point towards the line and we realize that there is next to no observation on the opposite side in the entire area of South East Asia,” he told the BBC’s John Sudworth in Wuhan.
“China is an extremely large spot and South East Asia is a major spot. The stockpile chains to the Huanan fish market were broad, they were rolling in from different nations, they were rolling in from different pieces of China, so to truly follow that back it will take some work.”
He added that the spotlight should now be on those stockpile chains.
The WHO mission started in January, following a very long time of exchanges with Beijing. The specialists’ visit was intently observed by the Chinese specialists.
It was improbable that the master gathering, in its politically-charged mission, would have the option to pinpoint the wellspring of the pandemic in China a year after it started. Yet, in the wake of visiting the Wuhan Institute of Virology, they have shut the cover on a disputable hypothesis that Covid came from a lab release or was made by researchers.
Their quest for hints additionally incorporated a visit to the now-popular wet market in Huanan – selling fish, meat and live wild creatures – that was connected to a portion of the principal human cases.
The group say the infection may have hopped from creatures to people, however they don’t have the verification yet.
Potential transporters incorporate bats and pangolins, however tests so far still can’t seem to discover persuading proof for this. A different line of examination is whether the infection might have spread through imported frozen food. The chase for the birthplace will proceed.
Presentational dark line
What was the research facility hypothesis?
Hypothesis about the Wuhan Institute of Virology – one of China’s top infection research labs – started a year ago and was proliferated by previous US President Donald Trump.
In April, US state office links became known recommending that government office authorities were stressed over biosecurity there.
The workplace of the US public insight chief said at the time that while the infection was not man-made or hereditarily altered, authorities were exploring whether the flare-up started through contact with creatures or through a research facility mishap.
Yet, Dr Embarek said a visit to the lab during the mission indicated it was “improbable” that anything might have spilled out.
He said the lab hypothesis was “not in the theories that we will recommend for future investigations”.
-BBC
