BEIJING (AP) The hunt for the origins of COVID-19 has gone dark in China, the victim of political infighting after a series of stalled and thwarted attempts to find the source of the virus that killed millions and paralyzed the world for months.
The Chinese government froze meaningful domestic and international efforts to trace the virus from the first weeks of the outbreak, despite statements supporting open scientific inquiry, an Associated Press investigation found. That pattern continues to this day, with labs closed, collaborations shattered, foreign scientists forced out and Chinese researchers barred from leaving the country.
The investigation drew on thousands of pages of undisclosed emails and documents and dozens of interviews that showed the freeze began far earlier than previously known and involved political and scientific infighting in China as much as international finger-pointing.
As early as Jan. 6, 2020, health officials in Beijing closed the lab of a Chinese scientist who sequenced the virus and barred researchers from working with him.
Scientists warn the willful blindness over coronavirus origins leaves the world vulnerable to another outbreak, potentially undermining pandemic treaty talks coordinated by the World Health Organization set to culminate in May.
At the heart of the question is whether the virus jumped from an animal or came from a laboratory accident. A U.S. intelligence analysis says there is insufficient evidence to prove either theory, but the debate has further tainted relations between the U.S. and China.
Unlike in the U.S., there is virtually no public debate in China about whether the virus came from nature or from a lab leak. In fact, there is little public discussion at all about the source of the disease, first detected in the central city of Wuhan.
Crucial initial efforts were hampered by bureaucrats in Wuhan trying to avoid blame who misled the central government; the central government, which muzzled Chinese scientists and subjected visiting WHO officials to stage-managed tours; and the U.N. health agency itself, which may have compromised early opportunities to gather critical information in hopes that by placating China, scientists could gain more access, according to internal materials obtained by AP.
In a faxed statement, China's Foreign Ministry defended Chinas handling of research into the origins, saying the country is open and transparent, shared data and research, and made the greatest contribution to global origins research. The National Health Commission, China's top medical authority, said the country invested huge manpower, material and financial resources and has not stopped looking for the origins of the coronavirus.
It could have played out differently, as shown by the outbreak of SARS, a genetic relative of COVID-19, nearly 20 years ago. China initially hid infections then, but WHO complained swiftly and publicly. Ultimately, Beijing fired officials and made reforms. The U.N. agency soon found SARS likely jumped to humans from civet cats in southern China and international scientists later collaborated with their Chinese counterparts to pin down bats as SARS natural reservoir.
But different leaders of both China and WHO, Chinas quest for control of its researchers, and global tensions have all led to silence when it comes to searching for COVID-19s origins. Governments in Asia are pressuring scientists not to look for the virus for fear it could be traced inside their borders.
Even without those complications, experts say identifying how outbreaks begin is incredibly challenging and that its rare to know with certainty how some viruses begin spreading.
Its disturbing how quickly the search for the origins of (COVID-19) escalated into politics, said Mark Woolhouse, a University of Edinburgh outbreak expert. Now this question may never be definitively answered.
Secrecy clouds the beginning of the outbreak. Even the date when Chinese authorities first started searching for the origins is unclear.
The first publicly known search for the virus took place on Dec. 31, 2019, when Chinese Center for Disease Control scientists visited the Wuhan market where many early COVID-19 cases surfaced.
However, WHO officials heard of an earlier inspection of the market on Dec. 25, 2019, according to a recording of a confidential WHO meeting provided to AP by an attendee. Such a probe has never been mentioned publicly by either Chinese authorities or WHO.
In the recording, WHOs top animal virus expert, Peter Ben Embarek, mentioned the earlier date, describing it as an interesting detail. He told colleagues that officials were looking at what was on sale in the market, whether all the vendors have licenses (and) if there was any illegal (wildlife) trade happening in the market.
A colleague asked Ben Embarek, who is no longer with WHO, if that seemed unusual. He responded that it was not routine, and that the Chinese must have had some reason to investigate the market. Well try to figure out what happened and why they did that.
Ben Embarek declined to comment. Another WHO staffer at the Geneva meeting in late January 2020 confirmed Ben Embareks comments.
The Associated Press could not confirm the search independently. It remains a mystery if it took place, what inspectors discovered, or whether they sampled live animals that might point to how COVID-19 emerged.
A Dec. 25, 2019, inspection would have come when Wuhan authorities were aware of the mysterious disease. The day before, a local doctor sent a sample from an ill market vendor to get sequenced that turned out to contain COVID-19. Chatter about the unknown pneumonia was spreading in Wuhans medical circles, according to one doctor and a relative of another who declined to be identified, fearing repercussions.
A scientist in China when the outbreak occurred said they heard of a Dec. 25 inspection from collaborating virologists in the country. They declined to be named out of fear of retribution.
WHO said in an email that it was not aware of the Dec. 25 investigation. It is not included in the U.N. health agencys official COVID-19 timeline.
When health officials from Beijing arrived in Wuhan on Dec. 31, they decided to disinfect the market before collecting samples, destroying critical information about the virus. Gao Fu, head of the China CDC, mentioned it to an American collaborator.
His complaint when I met him was that all the animals were gone, said Columbia University epidemiologist Ian Lipkin.
Robert Garry, who studies viruses at Tulane University, said a Dec. 25 probe would be hugely significant, given what is known about the virus and its spread.
Being able to swab it directly from the animal itself would be pretty convincing and nobody would be arguing about the origins of COVID-19, he said.
But perhaps local officials simply feared for their jobs, with memories of firings after the 2003 SARS outbreak still vivid, said Ray Yip, the founding head of the U.S. Centers for Disease Control and Prevention outpost in China.
They were trying to save their skin, hide the evidence, Yip said.
The Wuhan government did not respond to a faxed request for comment.
Another early victim was Zhang Yongzhen, the first scientist to publish a sequence of the virus. A day after he wrote a memo urging health authorities to action, Chinas top health official ordered Zhangs lab closed.
They used their official power against me and our colleagues, Zhang wrote in an email provided to AP by Edward Holmes, an Australian virologist.
On Jan. 20, 2020, a WHO delegation arrived in Wuhan for a two-day mission. China did not approve a visit to the market, but they stopped by a China CDC lab to examine infection prevention and controlprocedures, according to an internal WHO travel report. WHOs then-China representative, Dr. Gauden Galea, told colleagues in a private meeting that inquiries about COVID-19s origins went unanswered.
There are a few cadres who have performed poorly, President Xi Jinping said in unusually harsh comments in February. Some dare not take responsibility, wait timidly for orders from above, and dont move without being pushed.
The government opened investigations into top health officials, according to two former and current China CDC staff and three others familiar with the matter. Health officials were encouraged to report colleagues who mishandled the outbreak to Communist Party disciplinary bodies, according to two of the people.
Some people both inside and outside China speculated about a laboratory leak. Those suspicious included right-wing American politicians, but also researchers close to WHO.
The focus turned to the Wuhan Institute of Virology, a high-level lab that experimented with some of the worlds most dangerous viruses.
In early February 2020, some of the Wests leading scientists, headed by Dr. Jeremy Farrar, then at Britains Wellcome Trust, and Dr. Anthony Fauci, then director of the U.S. National Institutes of Health, banded together to assess the origins of the virus in calls, a Slack channel and emails.
They drafted a paper suggesting a natural evolution, but even among themselves, they could not agree on the likeliest scenario. Some were alarmed by features they thought might indicate tinkering.
There have (been) suggestions that the virus escaped from the Wuhan lab, Holmes, the Australian virologist, who believed the virus originated in nature, wrote in a Feb. 7, 2020, email. I do a lot of work in China, and I can (assure) you that a lot of people there believe they are being lied to.
American scientists close to researchers at the Wuhan Institute of Virology warned counterparts there to prepare.
James DeLuc, head of a Texas lab, emailed his Wuhan colleague on Feb. 9, 2020, saying hed already been approached by U.S. officials. Clearly addressing this will be essential, with any kind of documentation you might have, he wrote.
The Chinese government was conducting its own secret investigation into the Wuhan Institute. Gao, the head of the China CDC, and another Chinese health expert revealed its existence in interviews months and years later. Both said the investigation found no evidence of wrongdoing, which Holmes, the Australian virologist, also heard from another contact in China. But Gao said even he hadn't seen further details, and some experts suspect they may never be released.
WHO started negotiations with China for a second visit with the virus origins in mind, but it was Chinas Foreign Ministry that decided the terms.
Scientists were sidelined and politicians took control. China refused a visa for Ben Embarek, then WHOs top animal virus expert. The itinerary dropped nearly all items linked to an origins search, according to draft agendas for the trip obtained by the AP. And Gao, the China CDC head who is also a respected scientist tasked with investigating the origins, was left off the schedule.
Instead, Liang Wannian, a politician in the Communist Party hierarchy, took charge of the international delegation. Liang is an epidemiologist close to top Chinese officials and China's Foreign Ministry who is widely seen as pushing the party line, not science-backed policies, according to nine people familiar with the situation who declined to be identified to speak on a sensitive subject.
Most of the WHO delegation was not allowed to go to Wuhan, which was under lockdown. The few who did learned little. They again had no access to the Wuhan Institute of Virology or the wildlife market and obtained only scant details about China CDC efforts to trace the coronavirus there.
On the train, Liang lobbied the visiting WHO scientists to praise Chinas health response in their public report. Dr. Bruce Aylward, a senior adviser to WHO Director-General Tedros Adhanom Ghebreyesus, saw it as the best way to meet Chinas need for a strong assessment of its response.
The new section was so flattering that colleagues emailed Aylward to suggest he dial it back a bit.
It is remarkable how much knowledge about a new virus has been gained in such a short time, read the final report, which was reviewed by Chinas top health official before it went to Tedros.
As criticism of China grew, the Chinese government deflected blame. Instead of firing health officials, they declared their virus response a success and closed investigations into the officials with few job losses.
There were no real reforms, because doing reforms means admitting fault, said a public health expert in contact with Chinese health officials who asked not to be identified because of the sensitivity of the matter.
In late February 2020, the internationally respected doctor Zhong Nanshan appeared at a news conference and said that the epidemic first appeared in China, but it did not necessarily originate in China.
Chinese officials told WHO that blood tests on lab workers at the Wuhan Institute of Virology were negative, suggesting they hadnt been previously infected with bat coronaviruses. But when WHO pressed for an independent audit, Chinese officials balked and demanded WHO investigate the U.S. and other countries as well.
By the time WHO led a third visit to Wuhan in January 2021, a year into the pandemic, the atmosphere was toxic.
Liang, the Chinese health official in charge of the first two WHO visits, continued to promote the questionable theory that the virus was shipped into China on frozen food. He suppressed information suggesting it could have come from animals at the Wuhan market, organizing market workers to tell WHO experts no live wildlife was sold and cutting recent photos of wildlife at the market from the final report. There was heavy political scrutiny, with numerous Chinese officials who werent scientists or health officers present at meetings.
Despite a lack of direct access, the WHO team concluded that a lab leak was extremely unlikely. So it came as an infuriating surprise to Chinese officials when, months later, WHO chief Tedros said all origins hypotheses, including the lab leak theory, remained on the table.
China told WHO any future missions to find COVID-19 origins should be elsewhere, according to a letter obtained by AP. Since then, global cooperation on the issue has ground to a halt; an independent group convened by WHO to investigate the origins of COVID-19 in 2021 has been stymied by the lack of cooperation from China and other issues.
Chinese scientists are still under heavy pressure, according to 10 researchers and healthofficials. Researchers who published papers on the coronavirus ran into trouble with Chinese authorities. Others were barred from travel abroad for conferences and WHO meetings. Gao, the China CDC director, was investigated after U.S. President Joe Biden ordered a review of COVID-19 data, and again after giving interviews on the virus origins.
New evidence is treated with suspicion. In March 2023, scientists announced that genetic material collected from the market showed raccoon dog DNA mixed with COVID-19 in early 2020, data that WHO said should have been publicly shared years before. The findings were posted, then removed by Chinese researchers with little explanation.
The head of the China CDC Institute of Viral Disease was forced to retire over the release of the market data, according to a former China CDC official who declined to be named to speak on a sensitive topic.
It has to do with the origins, so theyre still worried, the former official said. If you try and get to the bottom of it, what if it turns out to be from China?
Other scientists note that any animal from which the virus may have originally jumped has long since disappeared.
There was a chance for China to cooperate with WHO and do some animal sampling studies that might have answered the question, said Tulane Universitys Garry. The trail to find the source has now gone cold.
Cheng reported from Geneva.
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Toxic: How the search for the origins of COVID-19 turned politically poisonous - El Paso Inc.
