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Monday, February 1, 2021

Biden wants Lander to ‘reinvigorate’ American science

 Joe Biden’s presence at meetings of the Obama administration’s scientific advisory council sometimes tested his staff’s patience.

It wasn’t that the vice president was unwelcome, of course. It was that Biden’s tendency to linger long after the meetings ended invariably caused scheduling hiccups. From his seat across the table from Eric Lander, then the council’s co-chair, Biden would pepper the group with questions about cancer research, climate change, and everything in between. On several occasions, Biden stayed until his scheduler was “almost tearing her hair out,” recalled John Holdren, Lander’s council co-chair and President Obama’s science adviser.

Now President Biden has brought Lander back in a far more influential role: White House science adviser. The selection, and Biden’s decision to instantly elevate the role to Cabinet status, comes at a pivotal moment for the future of American science, and underscores the new administration’s pledge to place science at the center of government. Biden has set lofty expectations, introducing Lander as a researcher whose work “has changed the course of human history” and pledging that his science staff “will help restore your faith in America’s place on the frontier of science and discovery and hope.”

As a key player in the Human Genome Project and the founding director of the Broad Institute, Lander is no stranger to herculean tasks. Nor is he a stranger to Washington, where his penchant for rubbing elbows has earned him connections to high-level government scientists, members of Congress, and even Supreme Court Justice Stephen Breyer, who once played charades in the Lander family living room.

Lander is described by friends and associates as an engaging, uber-talented science communicator who does not suffer fools, with an ability to both envision and execute complex and ambitious scientific projects. He is not, however, without a healthy ego, and has had his share of controversy. And he won’t be content to serve as scientific window dressing — if Lander has an opinion, he will almost certainly voice it.

“He is able to explain complex science and technology issues in ways that people immediately understand, in ways that resonate,” Holdren said. “Obama loved him, and Biden loved him. And so in my judgment, Eric Lander was, in many respects, the obvious choice.”

Lander has his work cut out for him.

Nearly a half-million Americans are dead from a pandemic, and swaths of the country have rejected basic, science-backed measures like wearing masks. Climate change is accelerating. Government science agencies are confronted with a crisis in public confidence. A host of other issues, including the militarization of space, Chinese threats to U.S.-backed research, the proliferation of self-driving cars, and genetic data privacy, will also require the White House’s attention.

It is clear, already, that Biden expects Lander to play an active role addressing each. In an open letter modeled on President Franklin Roosevelt’s 1941 challenge to his own science adviser to leverage science for the benefit of the county’s health, safety, and prosperity, Biden assigned Lander a similarly formidable task: to “refresh and reinvigorate our national science and technology strategy to set us on a strong course for the next 75 years.”

While the Senate hasn’t yet confirmed Lander to lead the White House Office of Science and Technology Policy, he began on Jan. 25 as Biden’s science adviser, a role that does not require Senate approval.

The foundation of Lander’s team is already in place. Alondra Nelson, previously the president of the Social Science Research Council, has been installed as Lander’s deputy. Kei Koizumi, an expert in government science agency budgets and an Obama administration OSTP veteran, is the office’s chief of staff.

Amid a pandemic and a redoubled effort to confront racism in health care, science, and society at large, the selection of a biologist and social scientist to steer the White House’s science strategy is clearly purposeful.

As one of the world’s leading genomics researchers, Lander is also uniquely suited to help address one of the country’s biggest pandemic-response shortcomings: a lack of capacity for viral genome sequencing, which has prevented the U.S. from detecting new variants of the SARS-CoV-2 virus before they begin spreading in earnest.

“If you look at presidential science advisers over time, in general, they are physicists,” said Marjory Blumenthal, a RAND Corporation researcher who served as executive director of the President’s Council of Advisors on Science and Technology during the Obama administration. “At this moment, when the country and the world are dealing with a pandemic, bringing in somebody who understands the life sciences underscores the need to really engage science in those discussions.”

“He is able to explain complex science and technology issues in ways that people immediately understand, in ways that resonate.”

JOHN HOLDREN, PRESIDENT OBAMA’S SCIENCE ADVISER

Lander is hardly the picture of a scientist alone at his lab bench.

He enjoys friendships with senators, and has hosted at least one Supreme Court justice in his Cambridge, Mass., living room. Despite his pioneering work in genomics, he is deeply engaged in issues ranging from criminal justice to mathematics, his original academic discipline. As of 2020, he held a seat on a scientific council that reports directly to the pope.

His connections in academia run deep, too. Lander, 63, has worked for decades with many of the world’s leading scientists, including several who have played key government roles. He’s a longtime friend of Harold Varmus, the former director of the National Institutes of Health. He has known the NIH’s current director, Francis Collins, for decades, dating back to Lander’s time leading the Whitehead Institute, a leading genomic research center, and Collins’ time directing the U.S. government component of the Human Genome Project.

But Lander may provide a more political counterpoint to the nonpartisan role that Collins, known for winning over progressive Democrats and conservative Republicans alike, has played in D.C. since he was appointed NIH director in 2009.

“Francis is the guitar-playing, motorcycle-riding, folksy guy who can talk to evangelical Republicans as well as Democrats,” said Robert Cook-Deegan, an Arizona State science policy professor and the founding director for Genome Ethics, Law & Policy in Duke’s Institute for Genome Sciences & Policy. “I don’t think [Lander] has that kind of political flexibility.”

Collins & Lander
From left, Francis Collins, Eric Lander, and Robert Waterston of Washington University at a 2001 press conference announcing the first-ever publication of the sequencing of the human genetic code.ALEX WONG/NEWSMAKERS

Lander, however, has never sought to play both sides of the aisle. He is a reliable Democrat, and has donated thousands to Biden and the two Massachusetts senators, Ed Markey and Elizabeth Warren (he first donated to Warren’s 2020 presidential campaign six months before he donated to Biden’s). His warm relations with Massachusetts politicians may also help Lander’s standing with Biden’s special envoy on climate change: the former senator and presidential candidate John Kerry.

He enjoys a friendly rapport with Warren, in particular, and one of his adult sons worked for her 2020 presidential campaign.

“He’s a social being, and has the opportunity because of his position in life to meet a lot of interesting people in politics,” said Varmus, who briefly co-chaired PCAST with Lander in 2009 and sits on the Broad Institute’s board. “Elizabeth Warren is an engaging person, they like each other, and why shouldn’t they see each other? He’s going to be working with people he knows well, and that’s an advantage.”

Lander’s connections in politics and law extend beyond Congress. He has long consulted lawyers and judges about forensic science and the role DNA samples play in the criminal justice system. As a former board member of the Innocence Project, Lander’s appointment has sparked hopes of a reinvigorated debate over the use of the sometimes-shoddy forensic science that often passes for irrefutable evidence in American courtrooms.

Years earlier, Breyer had relied heavily on the scientist’s input for one of the most consequential scientific court rulings in history. In 2013, Lander submitted a brief to the Supreme Court in a historic case that determined the right to patent naturally occurring genes. Though his submission was one of dozens, the court fixated on it throughout the oral arguments, beginning with a mid-hearing Breyer reference to “the Lander brief.”

“I was sitting in the room, and I was blown away, because six of the justices quoted his brief,” Cook-Deegan said. “That doesn’t just happen by itself.” (In reality, it was only three — Breyer, Samuel Alito, and the late Ruth Bader Ginsburg — though Lander’s brief served as a factual basis for much of the court’s debate.)

The Supreme Court, eventually, ruled as Lander suggested it should, issuing a landmark 9-0 decision that naturally occurring genes cannot be patented.

Lander’s success has not earned him universal popularity, and his ascendance to the White House has not come without controversy.

In recent years, Lander has committed a number of gaffes that his critics say exemplify a certain arrogance and feed into science’s history of mistreating researchers who are women or people of color. While some attacks on Lander can likely be chalked up to professional jealousy, other missteps have provided a release valve for pent-up frustration over what some scientists view as his sharp elbows, and his ability to soak up attention and funding for himself, the Broad Institute, and his scientific approach.

In 2018, for example, Lander toasted James Watson for his 90th birthday. Watson co-discovered DNA’s double helix and is one of the world’s most celebrated scientists, but he has long been criticized for minimizing the role Rosalind Franklin played in the seminal research; he also has a history of racist and sexist comments. Other researchers — including Maria Zuber, the geophysicist who will co-chair Biden’s scientific advisory council — have also feted Watson in recent years as science, like other fields, has grappled with how to recognize historic work from people with racist, sexist, or otherwise prejudiced legacies. After immense backlash, Lander apologized for toasting Watson, saying he shouldn’t have done so, and that he had personally been subjected to Watson’s anti-Semitism.

In 2016, Lander earned the distinctly Washington dishonor of a “gate” — in this case, “Landergate,” a controversy that centered on his perceived failure to sufficiently credit other scientists, especially his female competitors. In an essay titled “The Heroes of CRISPR,” Lander described key discoveries that led to CRISPR being used as a genome-editing tool. His lengthy review, critics alleged, failed to give sufficient credit to the work of Jennifer Doudna and Emmanuelle Charpentier, with whom the Broad Institute has long been entangled in a legal battle over certain CRISPR patents. Doudna and Lander, however, may have buried the hatchet: They recently co-authored a perspective piece about progress in genomic medicine. (That piece’s lead author: NIH Director Francis Collins.)

In a recent Scientific American op-ed, the advocacy group 500 Women Scientists panned Lander’s appointment, arguing it symbolizes complacency with a science world whose gatekeepers are largely white and male, and often either actively or passively discriminatory to researchers who are women or people of color.

“His nomination does not fill us with hope that he will shepherd the kind of transformation in science we need if we are to ensure science delivers equity and justice for all,” the group wrote.

Many of his detractors, however, still credit his ability to fundraise, gin up enthusiasm for new research, and oversee major endeavors, traits that could help to further elevate science within an administration already pushing for science to be elevated.

“I have mixed feelings,” Michael Eisen, a UC Berkeley biologist who is arguably Lander’s biggest critic, wrote on Twitter after Biden announced the appointment. “Lander is serially dishonest and chronically full of s**t. But he is really good at organizing big projects (probably the most important aspect of the job right now) and advocating for science.”

Biden’s early science picks are clearly intended to demonstrate a new direction for the White House’s science efforts.

Selecting Lander elevates a life scientist amid a pandemic, showcasing a broader pivot from Cold War-era scientific concerns. Nelson, who Lander picked as his deputy, represents a historic win for the social science world, though perhaps not coincidentally, many of her interests align closely with Lander’s: She’s the author of an award-winning book on the implications that genomics and DNA sequencing hold for race and reparations.

The selection of a social scientist, and Nelson in particular, is “long overdue and very creative,” said Joanne PadrĂ³n Carney, the chief government relations officer for the American Association for the Advancement of Science. “She’s an exceptional choice. We tend to always consider the social sciences and the behavioral sciences as an afterthought, to a certain extent, and it’s really critical to ensure that those sciences have a place at the table.”

Former OSTP aides view Lander’s selection to Cabinet status as both a continuation and expansion of the Obama administration’s active science policy apparatus. It continues a string of symbolic moves aimed at boosting the office’s profile: In 2009, for example, Obama moved OSTP back from the New Executive Office Building, an across-the-street annex, to the Eisenhower Executive Office Building, a stone’s throw from the West Wing. Awarding the science adviser a Cabinet seat is seen as one-upping that move.

Practically, too, it allows the past administration’s science advisers to pick up where they left off. Under Lander’s leadership, PCAST, the advisory committee, authored dozens of reports during the eight-year presidency. Salient-seeming topics, in retrospect, include vaccine production during a pandemic, drug discovery, and bioterrorism. (President Trump did not appoint a science adviser until July 2018, and waited nearly three years to re-establish PCAST. The panel authored just one report during Trump’s term, though the adviser, Kelvin Droegemeier, argued reports are a poor metric for assessing the White House science staff’s performance.)

It seems clear Biden will bestow Lander with immense sway over the administration’s broader scientific operation: Nelson’s selection, and those of PCAST co-chairs Zuber and Frances Arnold, were largely Lander’s choice.

Joe Biden, Eric Lander, Kamala Harris
Vice President Kamala Harris and Lander look on as President Biden signs executive orders on combating climate change on Jan. 27.EVAN VUCCI/AP

But it remains to be seen whether the moves are PR-driven or whether they represent a true increase in science aides’ influence with the president. Holdren, after all, attended every Obama administration Cabinet meeting, and said in an interview he never had trouble getting Cabinet secretaries to return his calls. Practically speaking, Lander’s promotion merely moves him from the outer ring of chairs to the seats at the Cabinet Room table itself.

The only thing Lander lacks, in effect, is a budget worth billions of dollars. While he is nominally the government’s highest-ranking scientist, he will not run the NIH or the National Science Foundation, or play a direct role in Cabinet branches that oversee huge scientific research operations, like the Pentagon, Department of Energy, or Department of Commerce.

But Lander came to Washington for a fundamentally different role, argued Carney, the AAAS government relations officer.

“This isn’t about money,” she said. “It’s about ensuring that science is used in the decision-making process.”

Still, Carney and others acknowledged that in the Biden administration’s early days, scientific symbolism may carry more weight than hard-to-parse policy initiatives. For now, it appears Biden’s biggest scientific goal is not only to recenter science in his pandemic response, but also to broadcast that science will drive nearly every administration decision.

So far, however, Biden and his science office have stayed mum on whether they’ll bring back perhaps the most enduring symbol of the Obama era’s scientific focus: the White House Science Fair.

But according to current and former White House aides, who spoke on the condition of anonymity, all signs point to yes.

https://www.statnews.com/2021/02/01/eric-lander-connected-controversial-biden-pick/

More Americans have now been vaccinated for COVID-19 than infected

 More Americans have been vaccinated for COVID-19, as of Monday, than have been infected with the illness as the nationwide inoculation rollout continues, according to a report.

According to a Bloomberg Vaccine Tracker, 26.5 million people in the US have now received at least one dose of the vaccine, surpassing the 26.2 million coronavirus cases since the onset of the pandemic.

“It’s worth noting that today, for the first time, the data said that more people were vaccinated than were reported as newly diagnosed cases,” Paula Cannon, a professor at the University of Southern California’s Keck School of Medicine, told the outlet.

“That’s worth celebrating. I’m all for that win,” she said.

The milestone comes at a time when the US leads the world in daily coronavirus vaccine rates, with about 1.35 million doses administered per day, according to Bloomberg.

About 7.8% of Americans have now received at least one dose of the COVID-19 vaccine, while 1.8% of the population is fully vaccinated, the report said.

https://nypost.com/2021/02/01/more-americans-have-now-been-vaccinated-for-covid-than-infected/

Solid tumor biotech Bolt Biotherapeutics sets terms for $150M IPO

 Bolt Biotherapeutics, a Phase 1/2 biotech developing targeted therapies for solid tumors, announced terms for its IPO on Monday.


The Redwood City, CA-based company plans to raise $150 million by offering 8.8 million shares at a price range of $16 to $18. At the midpoint of the proposed range, Bolt Biotherapeutics would command a fully diluted market value of $596 million.

The company's pipeline contains lead candidate BDC-1001, a HER2 Boltbody Immune-Stimulating Antibody Conjugate. In preclinical safety studies, BDC-1001 was well tolerated and no adverse safety signals were observed. BDC-1001 is currently in a Phase 1/2 trial for the treatment of patients with HER2-expressing solid tumors, and the company expects to move into Phase 2 dose expansions in key solid tumor indications with unmet medical need in 2021.

Bolt Biotherapeutics was founded in 2015 and plans to list on the Nasdaq under the symbol BOLT. Morgan Stanley, SVB Leerink, Stifel and Guggenheim Securities are the joint bookrunners on the deal.

Remdesivir disrupts COVID-19 virus better than other similar drugs

 In the treatment of SARS-CoV-2, the virus that causes COVID-19, antiviral drug remdesivir has emerged as a promising candidate.

Remdesivir works by disrupting the virus's ability to replicate, but its exact mechanism has remained a mystery. Using advanced computational simulations, researchers at the Pritzker School of Molecular Engineering (PME) at the University of Chicago have revealed just how the drug works at the molecular level. They also found that two drugs that work in a similar manner, ribavirin and favilavir, do not bind as effectively to the virus.

"It's important to understand how remdesivir works at a molecular level," said Prof. Juan de Pablo, who led the research. "Now that we see that it is effective, and other drugs are not as effective, it can guide future efforts for treating COVID-19."

The results were published Jan. 6 in the journal ACS Central Science.

Understanding how drugs disrupt the virus

Remdesivir works by disrupting SARS-CoV-2's RNA polymerase, a key enzyme that the virus needs to replicate itself. When this enzyme is disrupted, the virus cannot multiply and spread within the body.

But in patients, the drug has produced varied results. Some clinical trials have shown that patients who received it recovered faster and had improved mortality rates, while other trials have shown that the drug did not reduce mortality or hospitalization lengths.

Since the beginning of the pandemic, de Pablo and his group have been using advanced computational simulations to systematically look at the different proteins that allow the virus to replicate or infect cells. They also have looked at the key candidate drugs that are already used to treat other diseases and could be repurposed to inhibit those processes in SARS-CoV-2. The simulations, which require months of extremely powerful computations, ultimately reveal what happens at the molecular level.

To better understand how treatments disrupt the RNA polymerase, de Pablo and his group simulated the interaction between the enzyme and three drugs that are already available, and that are meant to inhibit it: remdesivir, ribavirin, and favilavir. They found that remdesivir binds strongly to the virus, but ribavirin and favilavir do not bind as effectively. They also found that remdesivir destabilizes the virus's protein complex, also reducing its ability to replicate.

Now that simulations show that the drug should work at a molecular level, scientists could focus, for example, on finding better strategies to deliver the drug more effectively, de Pablo said.

A complete landscape of molecular targets

Previously, the group used computational analysis to reveal how the drug Ebselen binds to the virus' main protease, or MPro. Now, the group is also examining the mechanisms of a different set of drugs on different proteins, with the goal of creating a complete landscape of molecular targets.

"We've seen that the virus is not going away and is in fact starting to mutate," de Pablo said. "Efforts to find the best therapies, and the best ways to administer them, have to continue."

###

Other authors on the paper include graduate students Fabian Byléhn, Walter Alvarado, and Gustavo R. Perez-Lemus, and postdoctoral researcher Cintia A. Menéndez.

Citation: "Modeling the Binding Mechanism of Remdesivir, Favilavir, and Ribavirin to SARS-CoV-2 RNA-Dependent RNA Polymerase," BylĂ©hn et al, ACS Cent. Sci., Jan. 6., 2021. DOI: 10.1021/acscentsci.0c01242

Funding: National Science Foundation

https://www.eurekalert.org/pub_releases/2021-01/uoc-rdc012921.php

Common HIV drugs may prevent leading cause of vision loss

 Scientists have identified a group of drugs that may help stop a leading cause of vision loss after making an unexpected discovery that overturns a fundamental belief about DNA.

The drugs, known as Nucleoside Reverse Transcriptase Inhibitors, or NRTIs, are commonly used to treat HIV. The new discovery suggests that they may be useful against dry macular  as well, even though a virus does not cause that sight-stealing condition.

A review of four different health insurance databases suggests that people taking these drugs have significantly  of developing dry macular degeneration, a condition that affects millions of Americans.

"We are extremely excited that the reduced risk was reproduced in all the databases, each with millions of patients," said Jayakrishna Ambati, MD, a top macular degeneration researcher at the University of Virginia School of Medicine. "This finding provides real hope in developing the first treatment for this blinding disease."

Targeting Macular Degeneration

The new discovery comes from Ambati; Fred H. Gage, Ph.D., of the Salk Institute for Biological Studies; and collaborators around the world. The work rewrites our understanding of DNA, revealing for the first time that it can be manufactured in the cytoplasm of our cells, outside the  that is home to our .

The buildup of a certain type of DNA in the cytoplasm, Alu, contributes to macular degeneration, the researchers found. This buildup appears to kill off an important layer of cells that nourishes the retina's visual cells.

Based on this discovery, the researchers decided to look at drugs that block the production of this DNA, to see if they might help prevent vision loss. They analyzed multiple U.S. health insurance databases—encompassing more than 100 million patients over two decades—and found that people taking NRTIs were almost 40% less likely to develop dry macular degeneration.

The researchers are urging further study to determine if these drugs or safer derivatives known as Kamuvudines, both of which block a key inflammatory pathway, could help prevent vision loss from dry .

"A clinical trial of these inflammasome-inhibiting drugs is now warranted," said Ambati, the founding director of UVA's Center for Advanced Vision Science. "It's also fascinating how uncovering the intricate biology of genetics and combining it with big data archeology can propel insights into new medicines."

Ambati, of UVA's Department of Ophthalmology, previously determined that NRTIs may help prevent diabetes as well.

The researchers have published their findings in the scientific journal PNAS.


Explore further

HIV drugs could prevent diabetes, study suggests

More information: Shinichi Fukuda el al., "Cytoplasmic synthesis of endogenous Alu complementary DNA via reverse transcription and implications in age-related macular degeneration," PNAS (2021). www.pnas.org/cgi/doi/10.1073/pnas.2022751118
https://medicalxpress.com/news/2021-02-common-hiv-drugs-vision-loss.html

How defects in mitochondria may lead to autism spectrum disorder

 Researchers at Children's Hospital of Philadelphia (CHOP) have demonstrated that autism spectrum disorder (ASD) may be caused by defects in the mitochondria of brain cells. The findings were published online by the Proceedings of the National Academy of Sciences.

Multiple studies have revealed hundreds of mutations associated with , but there is no consensus as to how these genetic changes cause the condition. Biochemical and physiological analyses have suggested that deficiencies in mitochondria, the "batteries" of the cell that produce most of the body's energy, might be a possible cause. Recent studies have shown that variants of mitochondrial DNA (mtDNA) are associated with   disorder.

The study team hypothesized that if defects in the mitochondria do predispose patients to ASD, then a  in which relevant mtDNA mutations have been introduced should present with autism endophenotypes, measurable traits similar to those seen in patients. For this model, the traits related to autism included behavioral, neurophysiological, and biochemical features.

"Autism spectrum disorder is highly genetically heterogeneous, and many of the previously identified copy number and loss of function variants could have an impact on the mitochondria," said Douglas C. Wallace, Ph.D., Director of the Center for Mitochondrial and Epigenomic Medicine and the Michael and Charles Barnett Endowed Chair in Pediatric Mitochondrial Medicine and Metabolic Diseases at CHOP, co-senior author of the study, with Eric D. Marsh, MD, Ph.D., attending pediatric neurologist, Division of Child Neurology at CHOP.

The researchers—including co-first authors Tal Yardeni, Ph.D. and Ana G. Cristancho, MD, Ph.D. - introduced a mild missense mutation in the mtDNA ND6 gene into a mouse strain. The resulting mouse exhibited impaired social interactions, increased repetitive behaviors and anxiety, all of which are common behavioral features associated with autism spectrum disorder. The researchers also noted aberrations in electroencephalograms (EEG), more seizures, and brain-region specific defects on mitochondrial function. Despite these observations, the researchers found no obvious change in the brain's anatomy. These findings suggest that mitochondrial energetic defects appear to be sufficient to cause autism.

"Our study shows that mild systemic mitochondrial defects can result in autism spectrum disorder without causing apparent neuroanatomical defects," Wallace said. "These mutations appear to cause tissue-specific brain defects. While our findings warrant further study, there is reason to believe that this could lead to better diagnosis of autism and potentially treatments directed toward mitochondrial function."


Explore further

Autism spectrum disorder linked to mutations in some mitochondrial DNA

More information: Tal Yardeni el al., "An mtDNA mutant mouse demonstrates that mitochondrial deficiency results in autism endophenotypes," PNAS (2021). www.pnas.org/cgi/doi/10.1073/pnas.2021429118
https://medicalxpress.com/news/2021-02-defects-mitochondria-autism-spectrum-disorder.html

Top Chinese expert Zhong Nanshan, Fauci to discuss pandemic in public

 China’s top respiratory disease expert Zhong Nanshan has said he will appear with Anthony Fauci, the US President’s chief medical adviser, at an online forum in March – the first public discussion of the Covid-19 pandemic between the two.

Zhong told a press conference after a Covid-19 control event in Guangzhou on Sunday that they “share some similar views” and would discuss the pandemic at an online event hosted by a British university.

Edinburgh University announced on its website that the two would speak at the opening session of a virtual seminar on March 2 at the Edinburgh Futures Institute.

Zhong also said he will discuss the pandemic with experts from Harvard Medical School next week.

“If there is a turning point in the US pandemic, it would be great news for the whole world,” said Zhong, acknowledging that the Biden administration has made fighting the pandemic one of its top priorities.

The US, which has the world’s highest death toll from Covid-19, has seen more than 26 million cases and over 438,000 deaths, according to Johns Hopkins University.


China-US tensions have escalated since the start of the global outbreak, with the two sides trading barbs over the origins of the coronavirus and Donald Trump accusing Beijing of failing to contain the disease at the start.

Beijing has urged the new US administration to cooperate in fighting the pandemic as part of efforts to ease tensions between the two sides.

Although China has largely been successful in fighting the disease, it has recently seen a spike in cases across the country. The National Health Commission said on Sunday that January had seen 2,016 domestic cases, the highest number since March.

The country reported 73 new confirmed cases of infection on Saturday, all from the north and northeastern provinces of Hebei, Jilin and Heilongjiang – up from 36 confirmed cases on Friday.

Zhong said: “I think the situation in these three locations will be brought under control in February,” adding that strict prevention measures should reduce the infection rate by 20 to 30 per cent.

However, Zhong still advised people to stay put and reduce gatherings during the Lunar New Year, which starts on February 12, to prevent the situation from worsening again.

Meanwhile, Xu Wenbo, director of the National Institute for Viral Disease Control and Prevention, told a National Health Commission briefing that more than 24 million doses of the Covid-19 vaccine have been administered in China so far.

He added the number of serious abnormal reactions reported was no higher than for flu vaccines.