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EntornoInteligente | WHO's mission to China ends without finding the origin of the coronavirus

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British Prime Minister Boris Johnson mooted a global contract on pandemics where countries can share data on future pandemics, after his Foreign Minister voiced concerns about the level of access given to the WHO mission

The World Health Organisation (WHO) team investigating the origins of the coronavirus has wrapped up its 28-day mission to Wuhan, China, without finding the origin of the virus.

Experts believe the disease, which has recorded over 109 million cases and killed 2.4 million people worldwide, most likely infected humans from an intermediate animal host.

After the first clusters of Covid-19 were detected in Wuhan in late 2019, the government put the city of 11 million under a 76-day lockdown with strict restrictions on movement.

The WHO visit has not been short of controversies, with the probe plagued by delays, concerns over access and bickering between Beijing and Washington.

Here are some FAQs about the issue.

Who are the experts? Led by Dr Peter Ben Embarek, the WHO scientist for food safety and zoonosis, the 14-member investigative team consists of epidemiologists, animal and human disease experts, veterinarians, medical doctors and virologists.

They include zoologist Peter Daszak, infectious disease expert Dominic Dwyer, Dr Marion Koopmans, a virologist from the Erasmus University Medical Centre in the Netherlands and Danish epidemiologist Thea Kolsen Fischer.

What is the team’s mission? Apart from the laboratory leak hypothesis, the other three scenarios that the WHO-led team explored with their Chinese counterparts were that the virus had jumped directly from an animal host; that it infected humans via an intermediate animal species; and that its transmission to the human population was via frozen food products.

In the course of its investigation, the team visited key sites like the Huanan seafood market, where many of the first cases were discovered as well as the Wuhan Institute of Virology, which is involved in coronavirus research.

Did China undermine the WHO probe? Western nations have criticised Beijing for not being fully transparent at the start of the outbreak, mishandling its initial stages and allowing the pathogen to escape beyond China‘s borders to ravage the world.

It did not help that the experts’ visit to Wuhan was delayed by China, leading to a rare rebuke from director-general, Dr Tedros Adhanom Ghebreyesus , in early January that he was “very disappointed” that Beijing has not given the green light.

There had also been worries about the team’s access to data a year after the outbreak, amid concerns that the Chinese will try to stop embarrassing information from being released.

Although several WHO team members insisted that they were granted full access to the sites and people they requested to visit, some said they were not given raw data and instead relied on analyses by Chinese scientists.

More on this topic   Related Story A WHO researcher reflects on his trip to China seeking origins of Covid-19   Related Story White House cites ‘deep concerns’ about WHO Covid-19 report, demands early data from China What is the controversy over raw data access? Dr Dwyer said on Saturday (Feb 13) China‘s scientists refused to share raw data of the outbreak. They had requested raw patient data on 174 cases from Wuhan but were provided only with a summary.

In an interview with AFP, Dr Embarek said the team would have been keen to have access to raw data about earlier cases of illnesses, including pneumonia, flu and fever, that could conceivably have been Covid-19.

However, team member Dr Daszak tweeted that he had a different experience. “I found trust & openness w/ my China counterparts. We DID get access to critical new data throughout. We DID increase our understanding of likely spillover pathways,” he said.

To date, the Chinese government has not addressed the data issue.

More on this topic   Related Story Coronavirus: On WHO trip, China refused to hand over important data   Related Story WHO says all hypotheses still open in probe into coronavirus origins How true is the lab leak theory? The WHO team said it is extremely unlikely that the virus leaked from the Wuhan Institute and further research into this theory was not required.

The WHO statement will vindicate Chinese officials, who have long bristled at the possibility that the virus could have come from a lab. Former United States president Donald Trump has suggested, without evidence, that the virus could have been leaked from a Chinese lab, and has accused China of spreading Covid-19 around the world.

What about the frozen food theory? The Chinese authorities have been pushing the narrative that the virus could have been brought into Wuhan via cold-chain logistics and frozen food products, linking the theory to various domestic outbreaks in the past few months.

More on this topic   Related Story China scores a public relations win after WHO mission to Wuhan   Related Story WHO‘s Wuhan mission significant but just a first step in tracing Covid-19 origins: Experts The WHO mission members appeared to give weight to China‘s theory that it could be carried on cold-chain products, although foreign experts including WHO top emergency expert, Dr Mike Ryan, and the US Centres for Disease Control and Prevention have previously downplayed the risk.

Still, Dr Embarek said last Wednesday that further studies should be conducted to ascertain if frozen wild animals – under the right conditions – could spread the virus.

What are the international reactions? US national security adviser Jake Sullivan had expressed “deep concerns” about the findings and urged China to make available data from the earliest days of the outbreak.

British Prime Minister Boris Johnson mooted a global contract on pandemics where countries can share data on future pandemics, after his Foreign Minister voiced concerns about the level of access given to the WHO mission.

China has fired back, with a spokesman for the Chinese embassy in Washington saying the US should not be “pointing fingers” at China and other countries that supported the WHO during the pandemic.

What happens next? Following questions whether some hypotheses have been discarded, WHO‘s Dr Tedros said on Friday that all possibilities are still open and require further study in the search for the origins of Covid-19.

Future studies could include how the virus infect humans from frozen food products, tracing the supply chain of frozen animal products at the Huanan market to pinpoint a possible animal host for the coronavirus and expanding the search globally to look for evidence of circulation of Covid-19 before December 2019.

A summary of the team’s findings could be released as early as this week, while the full report which includes recommendations will be released after that.

  Related Stories:  Related Story Millions of counterfeit N95 masks were bought in 5 states, US says Related Story Europe’s oldest person, 117-year-old French nun, survives Covid-19 Related Story Japan says its world-class health system is buckling under Covid-19 pressure Related Story British boy wakes from nearly year-long coma unaware of Covid-19 pandemic Related Story Don’t let Long Covid ‘fall through the cracks’, WHO warns Related Story Vaccinate quickly to fight Covid-19 variants: Fauci Related Story Putin’s once-scorned Sputnik V is now a favourite in the fight against Covid-19 Related Story Covid-19 infections in Tokyo may have jumped ninefold, antibody survey shows Related Story World faces 4,000 Covid-19 variants but unlikely that vaccines won’t work, says Britain Related Story Why India’s coronavirus cases have fallen so sharply Sign up for the ST Asian Insider newsletter to get exclusive insights into Asia from our network of overseas correspondents.

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