States were anticipating a windfall after federal officials said they would stop holding back second doses. But the approach had already changed, and no stockpile exists.
When Health and Human Services Secretary Alex Azar announced this week that the federal government would begin releasing coronavirus vaccine doses that had been held in reserve for second shots, no such reserve existed, according to state and federal officials briefed on distribution plans. The Trump administration had already begun shipping out what was available, starting at the end of December, taking second doses for the two-dose regimen directly off the manufacturing line.
Now, health officials across the country who had anticipated their extremely limited vaccine supply as much as doubling beginning next week are confronting the reality that their allocations will remain largely flat, dashing hopes of dramatically expanding access for millions of elderly people and those with high-risk medical conditions. Health officials in some cities and states were informed in recent days about the reality of the situation, while others were still in the dark Friday.
Because both of the vaccines authorized for emergency use in the United States are two-dose regimens, the Trump administration’s initial policy was to hold back second doses to protect against manufacturing disruptions. But that approach shifted in recent weeks, according to the officials, who spoke on the condition of anonymity because they were not authorized to discuss the matter.
Operation Warp Speed, which is overseeing vaccine distribution, stopped stockpiling second doses of the Pfizer-BioNTech vaccine at the end of last year, those officials were told. Shipping of the last reserve doses of Moderna’s supply, meanwhile, began over the weekend.
The shift, in both cases, had to do with increased confidence in the supply chain, so Operation Warp Speed leaders felt they could reliably anticipate the availability of doses for booster shots — required three weeks later in the case of the Pfizer-BioNTech product and four weeks later under Moderna’s protocol.
But it also meant there was no stockpile of second doses waiting to be shipped, as Trump administration officials suggested this week. Azar, at a briefing Tuesday, said, “Because we now have a consistent pace of production, we can now ship all of the doses that had been held in physical reserve.” He explained the decision as part of the “next phase” of the nation’s vaccination campaign.
Those in line for their second shots are still expected to get them on schedule because second doses are prioritized over first shots and states are still receiving regular vaccine shipments. But state and local officials say they are angry and bewildered by the shifting directions and changing explanations about supply. Their anxiety was deepened by projections that a highly contagious virus variant would spread rapidly throughout the United States and as daily covid-19 deaths averaged 3,320 this week.
The health director in Oregon, Patrick M. Allen, was so disturbed that he wrote Azar on Thursday demanding an explanation. In his letter, he recounted how Gustave F. Perna, the chief operating officer of Operation Warp Speed, had “informed us there is no reserve of doses, and we are already receiving the full allocation of vaccines.”
“If true, this is extremely disturbing, and puts our plans to expand eligibility at grave risk,” Allen wrote. “Those plans were made on the basis of reliance on your statement about ‘releasing the entire supply’ you have in reserve. If this information is accurate, we will be unable to begin vaccinating our vulnerable seniors on Jan. 23, as planned.”
HHS spokesman Michael Pratt confirmed in an email that the final reserve of second doses had recently been released to states but did not address Azar’s comments, saying only, “Operation Warp Speed has been monitoring manufacturing closely, and always intended to transition from holding second doses in reserve as manufacturing stabilizes and we gained confidence in the ability for a consistent flow of vaccines.”
But the explanations by the federal government were conflicting. The 13 million doses made available for states to order this week — for delivery next week — represented “millions more” than in previous weeks, Pratt said. He also said states have not requested the full amount they have been allocated.
Guidance circulated Friday among HHS officials acknowledged, however, that “the notion that there is a large bolus of second doses that will be released to jurisdictions is not accurate.” And state and municipal health officials said their allocations for next week had increased only marginally, if at all.
Chicago Public Health Commissioner Allison Arwady said her city’s share had gone from about 32,000 doses to 34,000 doses. “I have stopped paying a whole lot of attention to what is being said verbally at the federal level right now,” she said.
Nirav Shah, the director of Maine’s Center for Disease Control and Prevention, said he learned only Friday, by calling his state’s designated contact at Warp Speed, that the reserve no longer existed.
Maine still plans to broaden vaccination next week to those 70 and older. “Who is in line will not change,” Shah said. “The velocity of that line will change because this bolus of doses that we intuited was coming based on Azar’s comments is not coming.”
In an email that reached some state officials Friday morning, Christopher Sharpsten, an Operation Warp Speed director, called it a “false rumor” that “the federal government was holding back vaccine doses in warehouses to guarantee a second/booster dose.”
In fact, that information had come fromAzar, who said Tuesday that the “next phase” of the country’s vaccination campaign involved “releasing the entire supply we have for order by states, rather than holding second doses in physical reserve.”
Azar’s comments Tuesday followed a Jan. 8 announcement by President-elect Joe Biden’s transition team that his administration would move to release all available doses rather than holding half in reserve for booster shots. Biden’s advisers said the move would be a way to accelerate distribution of the vaccine, which is in short supply across the country.
Azar initially said the Biden plan was shortsighted and potentially unethical in putting people at risk of missing their booster shots. When he embraced the change four days later, however, he did not say that the original policy had already been phased out or that the stockpile had been exhausted. Trump administration officials and Biden’s team alike have sought to reassure the public that increasing the pace of immunizations would not endanger booster shots.
Azar also signaled to states that they would soon see expanded supply, urging them to begin vaccinating adults 65 and older and those under 64 with high-risk medical conditions. Officials in some states embraced that directive, while others said that suddenly putting hundreds of thousands of additional people at the front of the line would overwhelm their capacity.
In subsequent conversations with state and local authorities, federal officials sought to temper those instructions, said people who participated in the conversations. Perna, for instance, spoke directly to officials in at least two of the jurisdictions receiving vaccine supply, explaining that allocations would not increase and that they did not have to broaden eligibility as they had previously been told, according to a health official who was not authorized to discuss the matter.
The revised instructions led some state and local officials to hold off on changes. One state health official noted that the updated eligibility guidance announced Tuesday did not appear on the website of the CDC, even though it was stated as federal policy by Azar and by Robert R. Redfield, the CDC director, in their remarks. Under the original recommendations, adults 65 and older and front-line essential workers were to comprise the second priority group, known as Phase 1b, after medical workers and residents and staffers of long-term-care facilities.
There was additional confusion from another change Azar announced this week — making allocation of doses dependent on how quickly states administer them. He originally said that would not take effect for two weeks.
But Connecticut Gov. Ned Lamont (D) on Thursday tweeted that federal officials had notified him that the state would receive an additional 50,000 doses next week “as a reward for being among the fastest states” to get shots into arms. West Virginia, meanwhile, which is moving at the fastest clip, according to CDC data, did not get any additional doses, said Holli Nelson, a spokeswoman for the state’s National Guard.
In a sign that the incentive structure may not be long-lived, a senior Biden transition official, speaking on the condition of anonymity to address ongoing deliberations, said this week that the team did not look kindly on a system that “punishes states.”
Biden has said he wants to see 100 million shots administered within his first 100 days — an aim that will depend on quickly accelerating the pace of immunization. Together, Pfizer and Moderna have agreed to sell 200 million doses to the United States by the end of March, which is enough to fully vaccinate 100 million people.
December retail sales fell 0.7 percent, adding to the growing list of data points showing the economic recovery stalling or even slipping into reverse.
Economists had expected sales to be flat through the holiday season.
The figure for November’s sales was also revised downward to a 1.4 percent drop, down from an earlier estimate of 1.1 percent.
With COVID-19 spreading in new and unprecedented levels across the country, economic indicators have pointed to a worrisome backslide.The country saw a net drop of 140,000 jobs in December, the first month of job loss since the early days of the pandemic.
More losses are likely in January after last week’s initial jobless claims climbed to 965,000, the highest level since August. The Hill’s Niv Elis has more here.
The indictment describes an inside job involving Beaumont employees who sold stolen sponges, adhesives and instruments used to inspect eyes and ears. The equipment included cystoscopes, a thin tube with a camera that is inserted through the urethra and into the bladder.
“Some of the medical devices stolen and re-sold over the Internet were possibly contaminated devices that were previously used in various surgical and other medical procedures on patients,” according to the indictment.
The three individuals charged in the indictment are:
Paul Purdy, 49, of Bellbrook, Ohio
Valdet Seferovic, 32, of Auburn Hills
Zafar Khan, 40, of Fenton
Purdy and Seferovic not respond to messages seeking comment Thursday while Harold Gurewitz, a lawyer for Khan, declined comment. The three defendants are scheduled to make initial appearances Jan. 21 in federal court.
“These defendants used their employment status to circumvent the safety protocols established by Beaumont Hospital to profit from the theft of medical devices and put the health and safety of the general public at risk in doing so,” U.S. Attorney Matthew Schneider said in a statement.
The wire fraud and conspiracy charges listed in the 18-count indictment are punishable by up to 20 years in federal prison.
Beaumont officials have cooperated fully with the investigation, health system spokesman Mark Geary wrote in an email to The Detroit News.
“This kind of theft does a disservice to more than just Beaumont — it does a disservice to the community,” Geary wrote. “We have confidence in the legal process and trust a just result will be achieved.”
Purdy and Seferovic were friends who worked at Beaumont and had access to storage areas inside one of the system’s hospitals, prosecutors alleged. The duo gained access to medical supplies and devices, according to the government, and devised a plan to steal the equipment and sell the items throughout the U.S.
Purdy, who worked for Beaumont until resigning in 2017, never told buyers the items were stolen, prosecutors said. After he quit, Purdy recruited Seferovic to continue stealing items from the medical supply, cleaning and disinfecting rooms, according to prosecutors.
“Medical devices that are removed from their rightful place in a hospital or other medical setting put patients’ health at risk by denying them access to needed diagnostic imaging and treatment,” Lynda Burdelik, special agent in charge of the U.S. Food and Drug Administration’s Criminal Investigations field office in Chicago, said in a statement.
Purdy paid Seferovic for stolen items via PayPal and resold the devices on eBay and Amazon, according to the government. On March 28, 2018, the indictment alleges Purdy received a $4,800 wire payment from the sale of two cystoscopes.
That same day, Seferovic received a $2,550 payment via PayPal, according to the government.
In fall 2017, Seferovic also agreed to steal and sell medical devices and supplies to Khan, who owns Wholesale Medical & Surgical Suppliers of America, LLC in Flint, according to the indictment.
Seferovic would transfer stolen supplies to Khan during meetings in metro Detroit, including at a Walmart parking lot, according to the indictment. Khan, in turn, would sell the supplies and devices online at below retail price.
Seferovic’s job duties and status was unclear Thursday.
The investigation and alleged crimes have prompted internal changes at Beaumont.
“…Beaumont has enhanced security protocols and implemented additional checks and balances across the organization to reduce the chances of something like this happening again,” Geary said.
🚨New CDC warning: The highly contagious variant B.1.1.7 originally detected in the U.K. could become the dominant strain in the U.S. by March.
Why it matters: The variant is estimated to be 30% to 50% more transmissible than other forms of the virus, threatening efforts to push the U.S. past its record high case count.
The variant is in 12 states, but has been diagnosed in only 76 of the 23 million U.S. cases reported to date, the AP reports.
It’s likely that the variant is more widespread than currently reported.
The big picture: Americans are exhausted and burned out, and COVID wariness is slipping.
So far, the variants do not appear to be resistant to the existing vaccines or cause more severe disease.
But the health care system is on the brink in places like Southern California.
Another spike in cases could lead us to a very dark place.
The bottom line:There’s no evidence that this variant is transmitted differently, so keep up the masks and social distancing.
Go deeper … The coronavirus variants: What you need to know.
I had been staring her in the eyes, as she had ordered, but when a doctor on my other side began jabbing me with a needle, I started to turn my head. “Don’t look at it,” the first doctor said. I obeyed.
This was in early August in New Orleans, where I had signed up to be a participant in the clinical trial for the Pfizer-BioNTech COVID-19 vaccine. It was a blind study, which meant I was not supposed to know whether I had gotten the placebo or the real vaccine. I asked the doctor if I would really been able to tell by looking at the syringe. “Probably not,” she answered, “but we want to be careful. This is very important to get right.”
I became a vaccine guinea pig because, in addition to wanting to be useful, I had a deep interest in the wondrous new roles now being played by RNA, the genetic material that is at the heart of new types of vaccines, cancer treatments and gene-editing tools. I was writing a book on the Berkeley biochemist Jennifer Doudna. She was a pioneer in determining the structure of RNA, which helped her and her doctoral adviser figure out how it could be the origin of all life on this planet. Then she and a colleague invented an RNA-guided gene-editing tool, which won them the 2020 Nobel Prize in Chemistry.
The tool is based on a system that bacteria use to fight viruses. Bacteria develop clustered repeated sequences in their DNA, known as CRISPRs, that can remember dangerous viruses and then deploy RNA-guided scissors to destroy them. In other words, it’s an immune system that can adapt itself to fight each new wave of viruses—just what we humans need. Now, with the recently approved Pfizer-BioNTech vaccine and a similar one from Moderna being slowly rolled out across the U.S. and Europe, RNA has been deployed to make a whole new type of vaccine that will, when it reaches enough people, change the course of the pandemic.
Drs. Ugur Sahin and Ozlem Tureci, Co-founders, BioNTech. In January 2020, before many in the Western world were paying attention to a new virus spreading in China, Dr. Ugur Sahin was convinced it would spur a pandemic. Sahin, who in 2008 co-founded the German biotech company BioNTech with his wife Dr. Ozlem Tureci, went to work on a vaccine and by March called his contact at Pfizer, a much larger pharmaceutical company with which BioNTech had previously worked on an influenza vaccine using mRNA. Less than a year later, the Pfizer-BioNTech COVID-19 vaccine became the first ever mRNA vaccine available for widespread use. Even so, Sahin, BioNTech’s CEO, and Tureci, its chief medical officer, maintain that BioNTech is not an mRNA company but rather an immunotherapy company. Much of the couple’s work—both at BioNTech and at their previous venture, Ganymed—has focused on treating cancer. But it is mRNA, and the COVID-19 vaccine made possible by the technology, that has pushed the famously hardworking couple into the limelight—and helped them become one of the richest pairs in Germany, though they reportedly still bicycle to work and live in a modest apartment near their office.
Up until last year, vaccines had not changed very much, at least in concept, for more than two centuries. Most have been modeled on the discovery made in 1796 by the English doctor Edward Jenner, who noticed that many milkmaids were immune to smallpox. They had all been infected by a form of pox that afflicts cows but is relatively harmless to humans, and Jenner surmised that the cowpox had given them immunity to smallpox. So he took some pus from a cowpox blister, rubbed it into scratches he made in the arm of his gardener’s 8-year-old son and then (this was in the days before bioethics panels) exposed the kid to smallpox. He didn’t become ill.
Before then, inoculations were done by giving patients a small dose of the actual smallpox virus, hoping that they would get a mild case and then be immune. Jenner’s great advance was to use a related but relatively harmless virus. Ever since, vaccinations have been based on the idea of exposing a patient to a safe facsimile of a dangerous virus or other germ. This is intended to kick the person’s adaptive immune system into gear. When it works, the body produces antibodies that will, sometimes for many years, fend off any infection if the real germ attacks.
One approach is to inject a safely weakened version of the virus. These can be good teachers, because they look very much like the real thing. The body responds by making antibodies for fighting them, and the immunity can last a lifetime. Albert Sabin used this approach for the oral polio vaccine in the 1950s, and that’s the way we now fend off measles, mumps, rubella and chicken pox.
At the same time Sabin was trying to develop a vaccine based on a weakened polio virus, Jonas Salk succeeded with a safer approach: using a killed or inactivated virus. This type of vaccine can still teach a person’s immune system how to fight off the live virus but is less likely to cause serious side effects. Two Chinese companies, Sinopharm and Sinovac, have used this approach to develop vaccines for COVID-19 that are now in limited use in China, the UAE and Indonesia.
Another traditional approach is to inject a subunit of the virus, such as one of the proteins that are on the virus’s coat. The immune system will then remember these, allowing the body to mount a quick and robust response when it encounters the actual virus. The vaccine against the hepatitis B virus, for example, works this way. Using only a fragment of the virus means that they are safer to inject into a patient and easier to produce, but they are often not as good at producing long-term immunity. The Maryland-based biotech Novavax is in late-stage clinical trials for a COVID-19 vaccine using this approach, and it is the basis for one of the two vaccines already being rolled out in Russia.
The plague year of 2020 will be remembered as the time when these traditional vaccines were supplanted by something fundamentally new:genetic vaccines, which deliver a gene or piece of genetic code into human cells. The genetic instructions then cause the cells to produce, on their own, safe components of the target virus in order to stimulate the patient’s immune system.
For SARS-CoV-2—the virus that causes COVID-19—the target component is its spike protein, which studs the outer envelope of the virus and enables it to infiltrate human cells. One method for doing this is by inserting the desired gene, using a technique known as recombinant DNA, into a harmless virus that can deliver the gene into human cells. To make a COVID vaccine, a gene that contains instructions for building part of a coronavirus spike protein is edited into the DNA of a weakened virus like an adenovirus, which can cause the common cold. The idea is that the re-engineered adenovirus will worm its way into human cells, where the new gene will cause the cells to make lots of these spike proteins. As a result, the person’s immune system will be primed to respond rapidly if the real coronavirus strikes.
This approach led to one of the earliest COVID vaccine candidates, developed at the aptly named Jenner Institute of the University of Oxford. Scientists there engineered the spike-protein gene into an adenovirus that causes the common cold in chimpanzees, but is relatively harmless in humans.
The lead researcher at Oxford is Sarah Gilbert. She worked on developing a vaccine for Middle East respiratory syndrome (MERS) using the same chimp adenovirus. That epidemic waned before her vaccine could be deployed, but it gave her a head start when COVID-19 struck. She already knew that the chimp adenovirus had successfully delivered into humans the gene for the spike protein of MERS. As soon as the Chinese published the genetic sequence of the new coronavirus in January 2020, she began engineering its spike-protein gene into the chimp virus, waking each day at 4 a.m.
Her 21-year-old triplets, all of whom were studying biochemistry, volunteered to be early testers, getting the vaccine and seeing if they developed the desired antibodies. (They did.) Trials in monkeys conducted at a Montana primate center in March also produced promising results.
Bill Gates, whose foundation provided much of the funding, pushed Oxford to team up with a major company that could test, manufacture and distribute the vaccine. So Oxford forged a partnership with AstraZeneca, the British-Swedish pharmaceutical company. Unfortunately, the clinical trials turned out to be sloppy, with the wrong doses given to some participants, which led to delays. Britain authorized it for emergency use at the end of December, and the U.S. is likely to do so in the next two months.
Johnson & Johnson is testing a similar vaccine that uses a human adenovirus, rather than a chimpanzee one, as the delivery mechanism to carry a gene that codes for making part of the spike protein. It’s a method that has shown promise in the past, but it could have the disadvantage that humans who have already been exposed to that adenovirus may have some immunity to it. Results from its clinical trial are expected later this month.
In addition, two other vaccines based on genetically engineered adenoviruses are now in limited distribution: one made by CanSino Biologics and being used on the military in China and another named Sputnik V from the Russian ministry of health.
There is another way to get genetic material into a human cell and cause it to produce the components of a dangerous virus, such as the spike proteins, that can stimulate the immune system. Instead of engineering the gene for the component into an adenovirus, you can simply inject the genetic code for the component into humans as DNA or RNA.
Let’s start with DNA vaccines. Researchers at Inovio Pharmaceuticals and a handful of other companies in 2020 created a little circle of DNA that coded for parts of the coronavirus spike protein. The idea was that if it could get inside the nucleus of a cell, the DNA could very efficiently churn out instructions for the production of the spike-protein parts, which serve to train the immune system to react to the real thing.
The big challenge facing a DNA vaccine is delivery.How can you get the little ring of DNA not only into a human cell but into the nucleus of the cell? Injecting a lot of the DNA vaccine into a patient’s arm will cause some of the DNA to get into cells, but it’s not very efficient.
Some of the developers of DNA vaccines, including Inovio, tried to facilitate the delivery into human cells through a method called electroporation, which delivers electrical shock pulses to the patient at the site of the injection. That opens pores in the cell membranes and allows the DNA to get in. The electric pulse guns have lots of tiny needles and are unnerving to behold. It’s not hard to see why this technique is unpopular, especially with those on the receiving end. So far, no easy and reliable delivery mechanism has been developed for getting DNA vaccines into the nucleus of human cells.
That leads us to the molecule that has proven victorious in the COVID vaccine race and deserves the title of TIME magazine’s Molecule of the Year: RNA. Its sibling DNA is more famous. But like many famous siblings, DNA doesn’t do much work. It mainly stays bunkered down in the nucleus of our cells, protecting the information it encodes. RNA, on the other hand, actually goes out and gets things done. The genes encoded by our DNA are transcribed into snippets of RNA that venture out from the nucleus of our cells into the protein-manufacturing region. There, this messenger RNA (mRNA) oversees the assembly of the specified protein. In other words, instead of just sitting at home curating information, it makes real products.
Scientists including Sydney Brenner at Cambridge and James Watson at Harvard first identified and isolated mRNA molecules in 1961. But it was hard to harness them to do our bidding, because the body’s immune system often destroyed the mRNA that researchers engineered and attempted to introduce into the body. Then in 2005, a pair of researchers at the University of Pennsylvania, Katalin Kariko and Drew Weissman, showed how to tweak a synthetic mRNA molecule so it could get into human cells without being attacked by the body’s immune system.
Stéphane Bancel, CEO, Moderna. Moderna’s COVID-19 vaccine was first tested in humans less than three months after news of the novel virus broke. But that lightning-fast development process belies the years of work that got Moderna to where it is today. The startup was founded in 2010 with the belief that mRNA technology, then still fairly new, could help treat any number of ailments. CEO Stéphane Bancel, pictured above, joined a year later. Moderna wasn’t originally focused on vaccines, but over time, its scientists began working toward vaccines against several infectious diseases as well as some forms of cancer. That experience came in handy when the COVID-19 pandemic arrived, leaving the world clamoring for a vaccine that could fight the deadly virus—and fast. Bancel’s company took the challenge in stride, using its mRNA platform to develop a vaccine around 95% effective at protecting against COVID-19 disease in less than a year.
When the COVID-19 pandemic hit a year ago, two innovative young pharmaceutical companies decided to try to harness this role played by messenger RNA: the German company BioNTech, which formed a partnership with the U.S. company Pfizer; and Moderna, based in Cambridge, Mass. Their mission was to engineer messenger RNA carrying the code letters to make part of the coronavirus spike protein—a string that begins CCUCGGCGGGCA … —and to deploy it in human cells.
BioNTech was founded in 2008 by the husband-and-wife team of Ugur Sahin and Ozlem Tureci, who met when they were training to be doctors in Germany in the early 1990s. Both were from Turkish immigrant families, and they shared a passion for medical research, so much so that they spent part of their wedding day working in the lab. They founded BioNTech with the goal of creating therapies that stimulate the immune system to fight cancerous cells. It also soon became a leader in devising medicines that use mRNA in vaccines against viruses.
In January 2020, Sahin read an article in the medical journal Lancet about a new coronavirus in China. After discussing it with his wife over breakfast, he sent an email to the other members of the BioNTech board saying that it was wrong to believe that this virus would come and go as easily as MERS and SARS. “This time it is different,” he told them.
BioNTech launched a crash project to devise a vaccine based on RNA sequences, which Sahin was able to write within days, that would cause human cells to make versions of the coronavirus’s spike protein. Once it looked promising, Sahin called Kathrin Jansen, the head of vaccine research and development at Pfizer. The two companies had been working together since 2018 to develop flu vaccines using mRNA technology, and he asked her whether Pfizer would want to enter a similar partnership for a COVID vaccine. “I was just about to call you and propose the same thing,” Jansen replied. The deal was signed in March.
By then, a similar mRNA vaccine was being developed by Moderna, a much smaller company with only 800 employees. Its chair and co-founder, Noubar Afeyan, a Beirut-born Armenian who immigrated to the U.S., had become fascinated by mRNA in 2010, when he heard a pitch from a group of Harvard and MIT researchers. Together they formed Moderna, which initially focused on using mRNA to try to develop personalized cancer treatments, but soon began experimenting with using the technique to make vaccines against viruses.
In January 2020, Afeyan took one of his daughters to a restaurant near his office in Cambridge to celebrate her birthday. In the middle of the meal, he got an urgent text message from the CEO of his company, Stéphane Bancel, in Switzerland. So he rushed outside in the freezing temperature, forgetting to grab his coat, to call him back.
Bancel said that he wanted to launch a project to use mRNA to attempt a vaccine against the new coronavirus. At that point, Moderna had more than 20 drugs in development but none had even reached the final stage of clinical trials. Nevertheless, Afeyan instantly authorized him to start work. “Don’t worry about the board,” he said. “Just get moving.” Lacking Pfizer’s resources, Moderna had to depend on funding from the U.S. government. Anthony Fauci, head of the National Institute of Allergy and Infectious Diseases, was supportive. “Go for it,” he declared. “Whatever it costs, don’t worry about it.”
It took Bancel and his Moderna team only two days to create the RNA sequences that would produce the spike protein, and 41 days later, it shipped the first box of vials to the National Institutes of Health to begin early trials. Afeyan keeps a picture of that box on his cell phone.
An mRNA vaccine has certain advantages over a DNA vaccine, which has to use a re-engineered virus or other delivery mechanism to make it through the membrane that protects the nucleus of a cell. The RNA does not need to get into the nucleus. It simply needs to be delivered into the more-accessible outer region of cells, the cytoplasm, which is where proteins are constructed.
The Pfizer-BioNTech and Moderna vaccines do so by encapsulating the mRNA in tiny oily capsules, known as lipid nanoparticles.Moderna had been working for 10 years to improve its nanoparticles.This gave it one advantage over Pfizer-BioNTech: its particles were more stable and did not have to be stored at extremely low temperatures.
Katalin Kariko, Senior vice president, BioNTech. In 1995, after years of struggle, Hungarian-born Katalin Kariko was pushed off the path to full professorship at the University of Pennsylvania. Her work on mRNA, molecules she believed could fundamentally change the way humans treat disease, had stalled. Then, in 1997, she met and began working with immunologist Drew Weissman. In 2005, they published a study describing a modified form of artificial mRNA—a discovery, they argued, that opened the door to mRNA’s use in vaccines and other therapies. Eventually, Kariko and Weissman licensed their technology to the German company BioNTech, where Kariko, shown here in a portrait shot by a photographer working remotely, is now a senior vice president. Her patience paid off this year. The mRNA-based Pfizer-BioNTech coronavirus vaccine, which Kariko helped develop, has been shown to be 95% effective at preventing COVID-19.
By November, the results of the Pfizer-BioNTech and Moderna late-stage trials came back with resounding findings: both vaccines were more than 90% effective. A few weeks later, with COVID-19 once again surging throughout much of the world, they received emergency authorization from the U.S. Food and Drug Administration and became the vanguard of the biotech effort to beat back the pandemic.
The ability to code messenger RNA to do our bidding will transform medicine. As with the COVID vaccines, we can instruct mRNA to cause our cells to make antigens—molecules that stimulate our immune system—that could protect us against many viruses, bacteria, or other pathogens that cause infectious disease. In addition, mRNA could in the future be used, as BioNTech and Moderna are pioneering, to fight cancer. Harnessing a process called immunotherapy, the mRNA can be coded to produce molecules that will cause the body’s immune system to identify and kill cancer cells.
RNA can also be engineered, as Jennifer Doudna and others discovered, to target genes for editing. Using the CRISPR system adapted from bacteria, RNA can guide scissors-like enzymes to specific sequences of DNA in order to eliminate or edit a gene. This technique has already been used in trials to cure sickle cell anemia. Now it is also being used in the war against COVID. Doudna and others have created RNA-guided enzymes that can directly detect SARS-CoV-2 and eventually could be used to destroy it.
More controversially, CRISPR could be used to create “designer babies” with inheritable genetic changes. In 2018, a young Chinese doctor used CRISPR to engineer twin girls so they did not have the receptor for the virus that causes AIDS. There was an immediate outburst of awe and then shock. The doctor was denounced, and there were calls for an international moratorium on inheritable gene edits. But in the wake of the pandemic, RNA-guided genetic editing to make our species less receptive to viruses may someday begin to seem more acceptable.
Throughout human history, we have been subjected to wave after wave of viral and bacterial plagues. One of the earliest known was the Babylon flu epidemic around 1200 B.C. The plague of Athens in 429 B.C. killed close to 100,000 people, the Antonine plague in the 2nd century killed 5 million, the plague of Justinian in the 6th century killed 50 million, and the Black Death of the 14th century took almost 200 million lives, close to half of Europe’s population.
The COVID-19 pandemic that killed more than 1.8 million people in 2020 will not be the final plague. However, thanks to the new RNA technology, our defenses against most future plagues are likely to be immensely faster and more effective. As new viruses come along, or as the current coronavirus mutates, researchers can quickly recode a vaccine’s mRNA to target the new threats. “It was a bad day for viruses,” Moderna’s chair Afeyan says about the Sunday when he got the first word of his company’s clinical trial results. “There was a sudden shift in the evolutionary balance between what human technology can do and what viruses can do. We may never have a pandemic again.”
The invention of easily reprogrammable RNA vaccines was a lightning-fast triumph of human ingenuity, but it was based on decades of curiosity-driven research into one of the most fundamental aspects of life on planet earth: how genes are transcribed into RNA that tell cells what proteins to assemble. Likewise, CRISPR gene-editing technology came from understanding the way that bacteria use snippets of RNA to guide enzymes to destroy viruses. Great inventions come from understanding basic science. Nature is beautiful that way.
HENRY KOTULA 