Wednesday September 22nd, 2021 10:03AM

WHO draft report says animals likely source of COVID-19

By The Associated Press
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BEIJING (AP) — A joint World Health Organization-China study on the origins of COVID-19 says that transmission of the virus from bats to humans through another animal is the most likely scenario and that a lab leak is “extremely unlikely,” according to a draft copy obtained by The Associated Press.

The findings offer little new insight into how the virus first emerged and leave many questions unanswered, though that was as expected. But the report does provide more detail on the reasoning behind the researchers' conclusions. The team proposed further research in every area except the lab leak hypothesis.

The report, which is expected to be made public Tuesday, is being closely watched since discovering the origins of the virus could help scientists prevent future pandemics — but it's also extremely sensitive since China bristles at any suggestion that it is to blame for the current one. Repeated delays in the report’s release have raised questions about whether the Chinese side was trying to skew its conclusions.

Last year, an AP investigation found the Chinese government was strictly controlling all research into its origins.

“We’ve got real concerns about the methodology and the process that went into that report, including the fact that the government in Beijing apparently helped to write it,” U.S. Secretary of State Antony Blinken said in a recent CNN interview.

China rejected that criticism Monday.

“The U.S. has been speaking out on the report. By doing this, isn’t the U.S. trying to exert political pressure on the members of the WHO expert group?” asked Foreign Ministry spokesperson Zhao Lijian.

The report is based largely on a visit by a WHO team of international experts to Wuhan, the Chinese city where COVID-19 was first detected. The mission was never meant to identify the exact natural source of the virus, an endeavor that typical takes years. For instance, more than 40 years of study has still failed to pinpoint the exact species of bat that are the natural reservoir of Ebola.

In the draft obtained by the AP, the researchers listed four scenarios in order of likelihood for the emergence of the new coronavirus. Topping the list was transmission from bats through another animal, which they said was likely to very likely. They evaluated direct spread from bats to humans as likely, and said that spread to humans from the packaging of “cold-chain” food products was possible but not likely.

That last possibility was previously dismissed by the WHO and the U.S. Centers for Disease Control and Prevention but researchers on this mission have taken it up again, further raising questions about the politicization of the study since China has long pushed the theory.

Bats are known to carry coronaviruses and, in fact, the closest relative of the virus that causes COVID-19 has been found in bats. However, the report says that “the evolutionary distance between these bat viruses and (COVID-19) is estimated to be several decades, suggesting a missing link.”

It said highly similar viruses have been found in pangolins, which are another kind of mammal, but scientists have yet to identify the same coronavirus in animals that has been infecting humans.

The AP received the draft copy on Monday from a Geneva-based diplomat from a WHO-member country. It wasn’t clear whether the report might still be changed prior to release, though the diplomat said it was the final version. A second diplomat confirmed getting the report too. Both refused to be identified because they were not authorized to release it ahead of publication.

WHO Director-General Tedros Adhanom Ghebreyesus acknowledged that he had received the report over the weekend and said it would be formally presented Tuesday.

“We will read the report and discuss, digest its content and next steps with member states,” Tedros told a news conference in Geneva. “But as I have said, all hypotheses are on the table and warrant complete and further studies from what I have seen so far.”

The draft report is inconclusive on whether the outbreak started at a Wuhan seafood market that had one of the earliest clusters of cases in December 2019. Research published last year in the journal Lancet suggested the market may have merely served to further spread the disease rather than being its source.

The market was an early suspect because some stalls sold a range of unusual animals — and some wondered if they had brought the new virus to Wuhan. The report noted that animal products — including everything from bamboo rats to deer, often frozen — were sold at the market, as were live crocodiles.

As the virus spread globally, China found samples of it on the packaging of frozen food coming into the country and, in some cases, have tracked localized outbreaks to them — but has never published convincing data to prove that link. As the search for the origins of the virus has become highly politicized, Beijing has pushed for scientists to explore this theory more because it could mean the virus originated outside of China.

The report said that the cold chain, as it is known, can be a driver of long-distance virus spread, though the risk is lower than through human-to-human spread. Most experts agree with that.

While it’s possible an infected animal contaminated packaging that was then brought to Wuhan and infected humans, the report said the probability is very low.

“While there is some evidence for possible reintroduction of (COVID-19) through handling of imported contaminated frozen products in China since the initial pandemic wave, this would be extraordinary in 2019 where the virus was not widely circulating,” the study said.

The report cited several reasons for all but dismissing the possibility the virus escaped from a lab in Wuhan, a speculative theory that was suggested and promoted by former U.S. President Donald Trump among others.

It said such laboratory accidents are rare and the labs in Wuhan working on coronaviruses and vaccines are well-managed. It also noted that there is no record of viruses closely related to the coronavirus in any laboratory before December 2019 and that the risk of accidentally growing the virus was extremely low.


Keaten reported from Geneva. Associated Press writers Maria Cheng in London, Victoria Milko in Jakarta, Indonesia, and Frank Jordans in Berlin contributed. The AP Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely responsible for all content.

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