WHO: COVID origins unclear but lab leak theory needs study
More than two years after coronavirus emerged in China and after at least 6.3 million deaths have been counted worldwide from the pandemic, the World Health Organization is recommending in its strongest terms yet that a deeper probe is required into whether a lab accident may be to blame.
That stance marks a sharp reversal of the U.N. health agency’s initial assessment of the pandemic’s origins, and comes after many critics accused WHO of being too quick to dismiss or underplay a lab-leak theory that put Chinese officials on the defensive.
WHO concluded last year that it was “extremely unlikely” COVID-19 might have spilled into humans in the city of Wuhan from a lab. Many scientists suspect the coronavirus jumped into people from bats, possibly via another animal.
Yet in a report released Thursday, WHO’s expert group said “key pieces of data” to explain how the pandemic began were still missing. The scientists said the group would “remain open to any and all scientific evidence that becomes available in the future to allow for comprehensive testing of all reasonable hypotheses.”
Identifying a disease’s source in animals typically takes years. It took more than a decade for scientists to pinpoint the species of bats that were the natural reservoir for SARS, a relative of COVID-19.
WHO’s expert group also noted that since lab accidents in the past have triggered some outbreaks, the highly politicized theory could not be discounted.
The report could revive accusations that WHO initially was too accepting of Chinese government explanations early in the outbreak, which ultimately killed millions of people, sickened millions more, forced dozens of countries into lockdown and upended the world economy.
Investigations by The Associated Press found that some top WHO insiders were frustrated by China during the initial outbreak even as WHO heaped praise on Chinese President Xi Jinping. They were also upset over how China sought to clamp down on research into the origins of COVID-19.
Former U.S. President Donald Trump speculated repeatedly — without evidence — that COVID-19 was started in a Chinese lab. He also accused WHO of “colluding” with China to cover up the initial outbreak, citing the U.N. health agency’s continued public praise of the country despite China’s refusal to share crucial data.
WHO’s expert group said WHO Director-General Tedros Adhanom Ghebreyesus sent two letters to senior Chinese government officials in February requesting information, including details about the earliest human cases of COVID-19 in the city of Wuhan. It’s unclear whether the Chinese responded.
The experts said no studies were provided to WHO that assessed the possibility of COVID-19 resulting from a laboratory leak. They said their understanding of how the coronavirus emerged was limited by several factors, including that not all research presented by Chinese scientists has been published.
Jamie Metzl, who sits on an unrelated WHO advisory group, has suggested that the Group of Seven industrialized nations set up their own COVID origins probe, saying WHO lacks the political authority, expertise and independence to conduct such a critical evaluation.
Metzl welcomed WHO’s call for a further investigation into the lab leak possibility but said it was insufficient.
“Tragically, the Chinese government is still refusing to share essential raw data and will not allow the necessary, full audit of the Wuhan labs,” he said. “Gaining access to this information is critical to both understanding how this pandemic began and preventing future pandemics.”