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US EXPLAINER: The US investigation into COVID-19 origins

07:50  09 june  2021
07:50  09 june  2021 Source:   msn.com

Biden walks fine line with probe into coronavirus origins

  Biden walks fine line with probe into coronavirus origins President Biden is turning to confront the mystery surrounding the origins of the COVID-19 pandemic, a move that provides political cover at home but could fuel greater tensions with China.Biden is under pressure to reveal what the U.S. intelligence community knows about the possibility the coronavirus first leaked from the Wuhan Institute of Virology in China following reports that at least three scientists were hospitalized weeks before the first infections were reported to the international community.

WASHINGTON (AP) — Once dismissed by most public health experts and government officials, the hypothesis that COVID-19 leaked accidentally from a Chinese lab is now receiving scrutiny under a new U.S. investigation.

People wearing face masks to help curb the spread of the coronavirus visit a shopping mall in Beijing, Sunday, June 6, 2021. (AP Photo/Andy Wong): Virus Outbreak China Daily Life © Provided by Associated Press Virus Outbreak China Daily Life

Experts say the 90-day review ordered on May 26 by President Joe Biden will push American intelligence agencies to collect more information and review what they already have. Former State Department officials under President Donald Trump have publicly pushed for further investigation into virus origins, as have scientists and the World Health Organization.

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Residents wearing face masks to help curb the spread of the coronavirus line up to receive the Sinopharm COVID-19 vaccine at the Central Business District in Beijing, Wednesday, June 2, 2021. (AP Photo/Andy Wong) © Provided by Associated Press Residents wearing face masks to help curb the spread of the coronavirus line up to receive the Sinopharm COVID-19 vaccine at the Central Business District in Beijing, Wednesday, June 2, 2021. (AP Photo/Andy Wong)

Many scientists, including Dr. Anthony Fauci, say they still believe the virus most likely occurred in nature and jumped from animals to humans. Virus researchers have not publicly identified any key new scientific evidence that might make the lab-leak hypothesis more likely.

Virologists also say it is unlikely that any definitive answer about virus origins will be possible in 90 days. The work to fully confirm origins and pathways of past viruses — such as the first SARS or HIV/AIDS — has taken years or decades.

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A look at what is known about the U.S. investigation of the virus.

WHAT ARE INTELLIGENCE AGENCIES REVIEWING?

Biden ordered a review of what the White House said was an initial finding leading to “two likely scenarios,” an animal-to-human transmission or a lab leak. The White House statement says two agencies in the 18-member intelligence community lean toward the hypothesis of a transmission in nature; another agency leans toward a lab leak.

One document drawing new attention is a State Department fact sheet published in the last days of Trump’s administration. The memo notes that the U.S. believes three researchers at a Wuhan, China, lab sought medical treatment for a respiratory illness in November 2019. However, the report is not conclusive: The origin and severity of the staffers’ illness is not known — and most people in China regularly go to hospitals, not primary-care physicians, for routine care.

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The memo also pointed to “gain of function” studies — which in theory could enhance the lethality or transmissibility of a virus — allegedly done at the Wuhan lab with U.S. backing. However, National Institutes of Health Director Francis Collins has since adamantly denied that the U.S. supported any “gain-of-function” research on coronaviruses in Wuhan.

David Feith, who served as deputy assistant secretary of state for East Asian and Pacific Affairs under Trump, said he supported Biden’s call for an enhanced review. “Implicit in the president’s statement is that there is more to analyze and more to collect than has been analyzed or collected to date," Feith said.

The Director of National Intelligence declined to comment.

IS CHINA HAMPERING INVESTIGATIONS?

The White House statement criticized China for a lack of transparency, echoing previous criticisms by Democrats and Republicans. “The failure to get our inspectors on the ground in those early months will always hamper any investigation into the origin of COVID-19,” the White House said.

The Biden administration's investigation into COVID-19’s origins misses half of the problem

  The Biden administration's investigation into COVID-19’s origins misses half of the problem President Joe Biden’s admission that COVID-19 may have escaped from a Chinese virology lab marks a seminal moment in public debate about the pandemic’s origins. Once ridiculed as fantasy, the so-called “lab leak theory” now has support within the U.S. intelligence community, Biden revealed. © Provided by Washington Examiner While the president deserves credit for sharing this information, he went to great lengths to avoid stating the plain truth that Beijing is stonewalling a real investigation of the virus’s origins.

The Associated Press has reported on China’s interference in the World Health Organization’s probes of the virus and its fanning of conspiracy theories online. China has also forced journalists to leave the country in recent years and silenced or jailed whistleblowers from Wuhan and elsewhere.

The lack of transparency in China is a significant and familiar challenge. But that does not in itself signal that something in particular is being hidden.

“The problem is when you make that announcement (Biden’s call for investigation) in a highly politicized environment, it makes it even less likely that China will cooperate with efforts to find the origins of the virus,” said Yanzhong Huang, a senior fellow for global health at the Council on Foreign Relations.

WHAT DO SCIENTISTS BELIEVE ABOUT VIRUS ORIGINS?

The most compelling argument for investigating the possibility of a lab leak is not any new hard evidence, but rather the fact that another pathway for virus spread has not been 100% confirmed.

“The great probability is still that this virus came from a wildlife reservoir,” said Arinjay Banerjee, a virologist at the Vaccine and Infectious Disease Organization in Saskatchewan, Canada. He pointed to the fact that spillover events – when viruses jump from animals to humans – are common in nature, and that scientists already know of two similar beta coronaviruses that evolved in bats and caused epidemics when humans were infected, SARS1 and MERS.

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However, the case is not completely closed. “There are probabilities, and there are possibilities,” said Banerjee. “Because nobody has identified a virus that’s 100% identical to SARS-CoV-2 in any animal, there is still room for researchers to ask about other possibilities.”

HOW LONG DOES IT TAKE TO CONFIRM THE ORIGIN OF A VIRUS?

Confirming with 100% certainty the origin of a virus is often not fast, easy, or always even possible.

For example, scientists never confirmed the origin of smallpox before the disease was eradicated through a global vaccination program.

In the case of Severe Acute Respiratory Syndrome (SARS) – a disease caused by a beta coronavirus, like the current coronavirus – researchers first identified the virus in February 2003. Later that year, scientists discovered the likely intermediary hosts: Himalayan palm civets found at live-animal markets in Guangdong, China. But it wasn’t until 2017 that researchers traced the likely original source of the virus to bat caves in China’s Yunnan province.

HOW IMPORTANT IS IT TO UNDERSTAND THE ORIGIN?

From a scientific perspective, researchers are always keen to better understand how diseases evolve. From a public health perspective, if a virus has transitioned to being spread mostly by human-to-human contact, discovering its origins is not as essential to strategies for containing the disease.

“Questions of origins and questions of disease control are not the same thing once human-to-human transmission has become common,” said Deborah Seligsohn, an expert in environment and public health at Villanova University.

Republicans have pressed for more inquiries into a possible lab leak as part of a broader effort to blame China and vindicate Trump's handling of the pandemic. Nearly 600,000 people in the United States have died of COVID-19, the highest toll of any country.

WHAY HAPPENS AFTER THE 90 DAYS?

Many scientists caution that it's unlikely a 90-day investigation will yield definitive new answers.

“We rarely get a ‘smoking gun,'" said Stephen Morse, a disease researcher at Columbia University. “Even under the best of circumstances we rarely get certainty, just degrees of likelihood."

Any findings will likely be politically explosive, especially if new evidence comes to light supporting or dismissing the zoonotic transfer or lab-leak theory. And a failure to reach definitive conclusions, almost inevitable after a 90-day review, could provide grist for Trump supporters and opponents alike, as well as embolden conspiracy theorists.

Meanwhile experts like the Council on Foreign Relations' Huang suspect China may simply clamp down more, adding another complication to already tense relations. “This will likely make it even more challenging to extract concessions from China to allow another team to visit Wuhan, or have unfettered access to investigate there,” he said.

MLB updates COVID protocols for vaccinated players, staff .
Most notably, fully vaccinated individuals will no longer be tested for COVID-19 unless they have symptoms or have been exposed to the virus. © Omar Ornelas via Imagn Content Services, LLC The handling of fully vaccinated individuals drew some attention last month after Nationals starter Erick Fedde tested positive for the coronavirus. Fedde, who had been fully vaccinated and was asymptomatic, was forced to go on the injured list. (Between his initial isolation period and subsequent rehab, he ultimately missed just more than three weeks of action.

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