* Lab theory leak cannot be ruled out: leading scientists
* Origins of virus needs to be properly investigated
* WHO said the virus was probably transmitted from bats
The origin of the novel coronavirus is still unclear and the theory that it was caused by a labouratory leak needs to be taken seriously until there is a rigorous data-led investigation that proves it wrong, a group of leading scientists said.
Covid-19, which emerged in China in late 2019, has killed 3.34 million people, cost the world trillions of dollars in lost income and upended normal life for billions of people.
‘More investigation is still needed to determine the origin of the pandemic,’ said the 18 scientists, including Ravindra Gupta, a clinical microbiologist at the University of Cambridge, and Jesse Bloom, who studies the evolution of viruses at the Fred Hutchinson Cancer Research Center.
‘Theories of accidental release from a lab and zoonotic spillover both remain viable,’ the scientists including David Relman, professor of microbiology at Stanford, said in a letter to the journal Science. https://science.sciencemag.org/content/372/6543/694.1
The authors of the letter said the World Health Organization's investigation into the origins of the virus had not made a ‘balanced consideration’ of the theory that it may have come from a labouratory incident.
In its final report, written jointly with Chinese scientists, a WHO-led team that spent four weeks in and around Wuhan in January and February said the virus had probably been transmitted from bats to humans through another animal, and that a lab leak was ‘extremely unlikely’ as a cause.
But there are myriad different ideas about the origin of the virus including a series of conspiracy theories.
‘We must take hypotheses about both natural and labouratory spillovers seriously until we have sufficient data,’ the scientists said, adding that an intellectually rigorous and dispassionate investigation needed to take place.
‘In this time of unfortunate anti-Asian sentiment in some countries, we note that at the beginning of the pandemic, it was Chinese doctors, scientists, journalists, and citizens who shared with the world crucial information about the spread of the virus-often at great personal cost.’
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