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How do mRNA vaccines work – and why do you need a second dose? 5 essential reads

So far, most vaccines in the US are mRNA vaccines. These represent a new technology and are likely to take over the vaccine world. But how do they work? What are their weaknesses? Five experts explain.

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New mRNA vaccines use genes from the coronavirus to produce immunity. Andriy Onufriyenko/Moment via Getty Images

Tens of millions of people across the U.S. have received a coronavirus vaccine. So far, the majority of doses have been either the Moderna or Pfizer vaccine, both of which use mRNA to generate an immune response. These gene-based vaccines have been in the works for decades, but this is the first time they have been used widely in people.

MRNA vaccines are proving to be more effective than anyone had hoped, but as with any new medical advancement, people have a lot of questions. How do they work? Are they safe? Do I really need two shots? Why do they need to be kept so cold? And will this be the vaccine technology of the future? Below, we highlight five articles from The Conversation that will help answer your questions about mRNA vaccines.

1. A vaccine revolution

“DNA and mRNA vaccines offer huge advantages over traditional types of vaccines, since they use only genetic code from a pathogen – rather than the entire virus or bacteria,” writes Deborah Fuller, a microbiologist at the University of Washington who has been working on gene-based vaccines for decades.

The Moderna and Pfizer vaccines are proof that mRNA vaccines are ready for prime time – and far surpass their predecessors. “The hopes that gene-based vaccines could one day provide a vaccine for malaria or HIV, cure cancer, replace less effective traditional vaccines or be ready to stop the next pandemic before it gets started are no longer far-fetched,” explains Fuller.

2. How does an mRNA vaccine work?

These vaccines are not only effective, they work in a fundamentally different way from traditional vaccines, explains Sanjay Mishra, a staff scientist at the Vanderbilt University Medical Center.

Traditional vaccines use an entire dead virus – or just a piece of one – to generate immunity. “But an mRNA vaccine is different,” writes Mishra, “because rather than having the viral protein injected, a person receives genetic material – mRNA – that encodes the viral protein. When these genetic instructions are injected into the upper arm, the muscle cells translate them to make the viral protein directly in the body.”

A drawing of the coronavirus.
Just as the pandemic hit, mRNA vaccine research had reached a tipping point. CDC/Alissa Eckert, MSMI; Dan Higgins, MAMS

3. Quick to market, but still safe

“Safety is the first and foremost goal for a vaccine,” says William Petri, a Professor of Medicine at the University of Virginia. A lot of people have expressed safety concerns based on how fast these vaccines were developed, approved and distributed.

According to Petri, the vaccines still went through every normal step – they just did them simultaneously.

“In my opinion, safety is not compromised by the speed of vaccine development and emergency use authorization. The reason that vaccines may be approved so quickly is that the large clinical trials to assess vaccine efficacy and safety are happening at the same time as the large-scale manufacturing preparation, funded by the federal government’s Operation Warp Speed program.”

4. Why it’s important to get your second shot

You got your first vaccine shot. But with shortages and supply problems, getting the second dose might be becoming a hassle. Does it really matter? Yes, explains William Petri in another article.

“The first dose primes the immune system and introduces the body to the germ of interest. This allows the immune system to prepare its defense. The second dose, or booster, provides the opportunity for the immune system to ramp up the quality and quantity of the antibodies used to fight the virus.”

Immunity is a complex process, and “if the booster isn’t given within the appropriate window, lower quantities of antibodies will be produced that may not provide as powerful protection from the virus,” writes Petri. So go get your second shot if you can, even if you have to get it a bit later than expected.

A person getting the coronavirus vaccine.
Both doses are important for full immunity. AP Photo/Paul Sancya

5. Subzero storage makes distribution a challenge

For all of their amazing attributes, mRNA vaccines do have at least one weakness: “If they get too warm or too cold they spoil. And, just like fish, a spoiled vaccine must be thrown away,” explains Anna Nagurney, Professor of Operations Management at the University of Massachusetts, Amherst, who studies medical supply chains.

The mRNA molecule is very fragile, so vaccines need to be kept at extremely cold, very specific temperatures – a challenge for distribution. “The answer is something called the vaccine cold chain – a supply chain that can keep vaccines in tightly controlled temperatures from the moment they are made to the moment that they are administered to a person,” explains Nagurney. This cold supply chain is critical to getting vaccines where they need to go, and without it, no matter how good the vaccines are, they can’t make much of a difference.

Editor’s note: This story is a roundup of articles from The Conversation’s archives.

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Four Years Ago This Week, Freedom Was Torched

Four Years Ago This Week, Freedom Was Torched

Authored by Jeffrey Tucker via The Brownstone Institute,

"Beware the Ides of March,” Shakespeare…

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Four Years Ago This Week, Freedom Was Torched

Authored by Jeffrey Tucker via The Brownstone Institute,

"Beware the Ides of March,” Shakespeare quotes the soothsayer’s warning Julius Caesar about what turned out to be an impending assassination on March 15. The death of American liberty happened around the same time four years ago, when the orders went out from all levels of government to close all indoor and outdoor venues where people gather. 

It was not quite a law and it was never voted on by anyone. Seemingly out of nowhere, people who the public had largely ignored, the public health bureaucrats, all united to tell the executives in charge – mayors, governors, and the president – that the only way to deal with a respiratory virus was to scrap freedom and the Bill of Rights. 

And they did, not only in the US but all over the world. 

The forced closures in the US began on March 6 when the mayor of Austin, Texas, announced the shutdown of the technology and arts festival South by Southwest. Hundreds of thousands of contracts, of attendees and vendors, were instantly scrapped. The mayor said he was acting on the advice of his health experts and they in turn pointed to the CDC, which in turn pointed to the World Health Organization, which in turn pointed to member states and so on. 

There was no record of Covid in Austin, Texas, that day but they were sure they were doing their part to stop the spread. It was the first deployment of the “Zero Covid” strategy that became, for a time, official US policy, just as in China. 

It was never clear precisely who to blame or who would take responsibility, legal or otherwise. 

This Friday evening press conference in Austin was just the beginning. By the next Thursday evening, the lockdown mania reached a full crescendo. Donald Trump went on nationwide television to announce that everything was under control but that he was stopping all travel in and out of US borders, from Europe, the UK, Australia, and New Zealand. American citizens would need to return by Monday or be stuck. 

Americans abroad panicked while spending on tickets home and crowded into international airports with waits up to 8 hours standing shoulder to shoulder. It was the first clear sign: there would be no consistency in the deployment of these edicts. 

There is no historical record of any American president ever issuing global travel restrictions like this without a declaration of war. Until then, and since the age of travel began, every American had taken it for granted that he could buy a ticket and board a plane. That was no longer possible. Very quickly it became even difficult to travel state to state, as most states eventually implemented a two-week quarantine rule. 

The next day, Friday March 13, Broadway closed and New York City began to empty out as any residents who could went to summer homes or out of state. 

On that day, the Trump administration declared the national emergency by invoking the Stafford Act which triggers new powers and resources to the Federal Emergency Management Administration. 

In addition, the Department of Health and Human Services issued a classified document, only to be released to the public months later. The document initiated the lockdowns. It still does not exist on any government website.

The White House Coronavirus Response Task Force, led by the Vice President, will coordinate a whole-of-government approach, including governors, state and local officials, and members of Congress, to develop the best options for the safety, well-being, and health of the American people. HHS is the LFA [Lead Federal Agency] for coordinating the federal response to COVID-19.

Closures were guaranteed:

Recommend significantly limiting public gatherings and cancellation of almost all sporting events, performances, and public and private meetings that cannot be convened by phone. Consider school closures. Issue widespread ‘stay at home’ directives for public and private organizations, with nearly 100% telework for some, although critical public services and infrastructure may need to retain skeleton crews. Law enforcement could shift to focus more on crime prevention, as routine monitoring of storefronts could be important.

In this vision of turnkey totalitarian control of society, the vaccine was pre-approved: “Partner with pharmaceutical industry to produce anti-virals and vaccine.”

The National Security Council was put in charge of policy making. The CDC was just the marketing operation. That’s why it felt like martial law. Without using those words, that’s what was being declared. It even urged information management, with censorship strongly implied.

The timing here is fascinating. This document came out on a Friday. But according to every autobiographical account – from Mike Pence and Scott Gottlieb to Deborah Birx and Jared Kushner – the gathered team did not meet with Trump himself until the weekend of the 14th and 15th, Saturday and Sunday. 

According to their account, this was his first real encounter with the urge that he lock down the whole country. He reluctantly agreed to 15 days to flatten the curve. He announced this on Monday the 16th with the famous line: “All public and private venues where people gather should be closed.”

This makes no sense. The decision had already been made and all enabling documents were already in circulation. 

There are only two possibilities. 

One: the Department of Homeland Security issued this March 13 HHS document without Trump’s knowledge or authority. That seems unlikely. 

Two: Kushner, Birx, Pence, and Gottlieb are lying. They decided on a story and they are sticking to it. 

Trump himself has never explained the timeline or precisely when he decided to greenlight the lockdowns. To this day, he avoids the issue beyond his constant claim that he doesn’t get enough credit for his handling of the pandemic.

With Nixon, the famous question was always what did he know and when did he know it? When it comes to Trump and insofar as concerns Covid lockdowns – unlike the fake allegations of collusion with Russia – we have no investigations. To this day, no one in the corporate media seems even slightly interested in why, how, or when human rights got abolished by bureaucratic edict. 

As part of the lockdowns, the Cybersecurity and Infrastructure Security Agency, which was and is part of the Department of Homeland Security, as set up in 2018, broke the entire American labor force into essential and nonessential.

They also set up and enforced censorship protocols, which is why it seemed like so few objected. In addition, CISA was tasked with overseeing mail-in ballots. 

Only 8 days into the 15, Trump announced that he wanted to open the country by Easter, which was on April 12. His announcement on March 24 was treated as outrageous and irresponsible by the national press but keep in mind: Easter would already take us beyond the initial two-week lockdown. What seemed to be an opening was an extension of closing. 

This announcement by Trump encouraged Birx and Fauci to ask for an additional 30 days of lockdown, which Trump granted. Even on April 23, Trump told Georgia and Florida, which had made noises about reopening, that “It’s too soon.” He publicly fought with the governor of Georgia, who was first to open his state. 

Before the 15 days was over, Congress passed and the president signed the 880-page CARES Act, which authorized the distribution of $2 trillion to states, businesses, and individuals, thus guaranteeing that lockdowns would continue for the duration. 

There was never a stated exit plan beyond Birx’s public statements that she wanted zero cases of Covid in the country. That was never going to happen. It is very likely that the virus had already been circulating in the US and Canada from October 2019. A famous seroprevalence study by Jay Bhattacharya came out in May 2020 discerning that infections and immunity were already widespread in the California county they examined. 

What that implied was two crucial points: there was zero hope for the Zero Covid mission and this pandemic would end as they all did, through endemicity via exposure, not from a vaccine as such. That was certainly not the message that was being broadcast from Washington. The growing sense at the time was that we all had to sit tight and just wait for the inoculation on which pharmaceutical companies were working. 

By summer 2020, you recall what happened. A restless generation of kids fed up with this stay-at-home nonsense seized on the opportunity to protest racial injustice in the killing of George Floyd. Public health officials approved of these gatherings – unlike protests against lockdowns – on grounds that racism was a virus even more serious than Covid. Some of these protests got out of hand and became violent and destructive. 

Meanwhile, substance abuse rage – the liquor and weed stores never closed – and immune systems were being degraded by lack of normal exposure, exactly as the Bakersfield doctors had predicted. Millions of small businesses had closed. The learning losses from school closures were mounting, as it turned out that Zoom school was near worthless. 

It was about this time that Trump seemed to figure out – thanks to the wise council of Dr. Scott Atlas – that he had been played and started urging states to reopen. But it was strange: he seemed to be less in the position of being a president in charge and more of a public pundit, Tweeting out his wishes until his account was banned. He was unable to put the worms back in the can that he had approved opening. 

By that time, and by all accounts, Trump was convinced that the whole effort was a mistake, that he had been trolled into wrecking the country he promised to make great. It was too late. Mail-in ballots had been widely approved, the country was in shambles, the media and public health bureaucrats were ruling the airwaves, and his final months of the campaign failed even to come to grips with the reality on the ground. 

At the time, many people had predicted that once Biden took office and the vaccine was released, Covid would be declared to have been beaten. But that didn’t happen and mainly for one reason: resistance to the vaccine was more intense than anyone had predicted. The Biden administration attempted to impose mandates on the entire US workforce. Thanks to a Supreme Court ruling, that effort was thwarted but not before HR departments around the country had already implemented them. 

As the months rolled on – and four major cities closed all public accommodations to the unvaccinated, who were being demonized for prolonging the pandemic – it became clear that the vaccine could not and would not stop infection or transmission, which means that this shot could not be classified as a public health benefit. Even as a private benefit, the evidence was mixed. Any protection it provided was short-lived and reports of vaccine injury began to mount. Even now, we cannot gain full clarity on the scale of the problem because essential data and documentation remains classified. 

After four years, we find ourselves in a strange position. We still do not know precisely what unfolded in mid-March 2020: who made what decisions, when, and why. There has been no serious attempt at any high level to provide a clear accounting much less assign blame. 

Not even Tucker Carlson, who reportedly played a crucial role in getting Trump to panic over the virus, will tell us the source of his own information or what his source told him. There have been a series of valuable hearings in the House and Senate but they have received little to no press attention, and none have focus on the lockdown orders themselves. 

The prevailing attitude in public life is just to forget the whole thing. And yet we live now in a country very different from the one we inhabited five years ago. Our media is captured. Social media is widely censored in violation of the First Amendment, a problem being taken up by the Supreme Court this month with no certainty of the outcome. The administrative state that seized control has not given up power. Crime has been normalized. Art and music institutions are on the rocks. Public trust in all official institutions is at rock bottom. We don’t even know if we can trust the elections anymore. 

In the early days of lockdown, Henry Kissinger warned that if the mitigation plan does not go well, the world will find itself set “on fire.” He died in 2023. Meanwhile, the world is indeed on fire. The essential struggle in every country on earth today concerns the battle between the authority and power of permanent administration apparatus of the state – the very one that took total control in lockdowns – and the enlightenment ideal of a government that is responsible to the will of the people and the moral demand for freedom and rights. 

How this struggle turns out is the essential story of our times. 

CODA: I’m embedding a copy of PanCAP Adapted, as annotated by Debbie Lerman. You might need to download the whole thing to see the annotations. If you can help with research, please do.

*  *  *

Jeffrey Tucker is the author of the excellent new book 'Life After Lock-Down'

Tyler Durden Mon, 03/11/2024 - 23:40

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CDC Warns Thousands Of Children Sent To ER After Taking Common Sleep Aid

CDC Warns Thousands Of Children Sent To ER After Taking Common Sleep Aid

Authored by Jack Phillips via The Epoch Times (emphasis ours),

A…

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CDC Warns Thousands Of Children Sent To ER After Taking Common Sleep Aid

Authored by Jack Phillips via The Epoch Times (emphasis ours),

A U.S. Centers for Disease Control (CDC) paper released Thursday found that thousands of young children have been taken to the emergency room over the past several years after taking the very common sleep-aid supplement melatonin.

The Centers for Disease Control and Prevention (CDC) headquarters in Atlanta, Georgia, on April 23, 2020. (Tami Chappell/AFP via Getty Images)

The agency said that melatonin, which can come in gummies that are meant for adults, was implicated in about 7 percent of all emergency room visits for young children and infants “for unsupervised medication ingestions,” adding that many incidents were linked to the ingestion of gummy formulations that were flavored. Those incidents occurred between the years 2019 and 2022.

Melatonin is a hormone produced by the human body to regulate its sleep cycle. Supplements, which are sold in a number of different formulas, are generally taken before falling asleep and are popular among people suffering from insomnia, jet lag, chronic pain, or other problems.

The supplement isn’t regulated by the U.S. Food and Drug Administration and does not require child-resistant packaging. However, a number of supplement companies include caps or lids that are difficult for children to open.

The CDC report said that a significant number of melatonin-ingestion cases among young children were due to the children opening bottles that had not been properly closed or were within their reach. Thursday’s report, the agency said, “highlights the importance of educating parents and other caregivers about keeping all medications and supplements (including gummies) out of children’s reach and sight,” including melatonin.

The approximately 11,000 emergency department visits for unsupervised melatonin ingestions by infants and young children during 2019–2022 highlight the importance of educating parents and other caregivers about keeping all medications and supplements (including gummies) out of children’s reach and sight.

The CDC notes that melatonin use among Americans has increased five-fold over the past 25 years or so. That has coincided with a 530 percent increase in poison center calls for melatonin exposures to children between 2012 and 2021, it said, as well as a 420 percent increase in emergency visits for unsupervised melatonin ingestion by young children or infants between 2009 and 2020.

Some health officials advise that children under the age of 3 should avoid taking melatonin unless a doctor says otherwise. Side effects include drowsiness, headaches, agitation, dizziness, and bed wetting.

Other symptoms of too much melatonin include nausea, diarrhea, joint pain, anxiety, and irritability. The supplement can also impact blood pressure.

However, there is no established threshold for a melatonin overdose, officials have said. Most adult melatonin supplements contain a maximum of 10 milligrams of melatonin per serving, and some contain less.

Many people can tolerate even relatively large doses of melatonin without significant harm, officials say. But there is no antidote for an overdose. In cases of a child accidentally ingesting melatonin, doctors often ask a reliable adult to monitor them at home.

Dr. Cora Collette Breuner, with the Seattle Children’s Hospital at the University of Washington, told CNN that parents should speak with a doctor before giving their children the supplement.

“I also tell families, this is not something your child should take forever. Nobody knows what the long-term effects of taking this is on your child’s growth and development,” she told the outlet. “Taking away blue-light-emitting smartphones, tablets, laptops, and television at least two hours before bed will keep melatonin production humming along, as will reading or listening to bedtime stories in a softly lit room, taking a warm bath, or doing light stretches.”

In 2022, researchers found that in 2021, U.S. poison control centers received more than 52,000 calls about children consuming worrisome amounts of the dietary supplement. That’s a six-fold increase from about a decade earlier. Most such calls are about young children who accidentally got into bottles of melatonin, some of which come in the form of gummies for kids, the report said.

Dr. Karima Lelak, an emergency physician at Children’s Hospital of Michigan and the lead author of the study published in 2022 by the CDC, found that in about 83 percent of those calls, the children did not show any symptoms.

However, other children had vomiting, altered breathing, or other symptoms. Over the 10 years studied, more than 4,000 children were hospitalized, five were put on machines to help them breathe, and two children under the age of two died. Most of the hospitalized children were teenagers, and many of those ingestions were thought to be suicide attempts.

Those researchers also suggested that COVID-19 lockdowns and virtual learning forced more children to be at home all day, meaning there were more opportunities for kids to access melatonin. Also, those restrictions may have caused sleep-disrupting stress and anxiety, leading more families to consider melatonin, they suggested.

The Associated Press contributed to this report.

Tyler Durden Mon, 03/11/2024 - 21:40

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Red Candle In The Wind

Red Candle In The Wind

By Benjamin PIcton of Rabobank

February non-farm payrolls superficially exceeded market expectations on Friday by…

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Red Candle In The Wind

By Benjamin PIcton of Rabobank

February non-farm payrolls superficially exceeded market expectations on Friday by printing at 275,000 against a consensus call of 200,000. We say superficially, because the downward revisions to prior months totalled 167,000 for December and January, taking the total change in employed persons well below the implied forecast, and helping the unemployment rate to pop two-ticks to 3.9%. The U6 underemployment rate also rose from 7.2% to 7.3%, while average hourly earnings growth fell to 0.2% m-o-m and average weekly hours worked languished at 34.3, equalling pre-pandemic lows.

Undeterred by the devil in the detail, the algos sprang into action once exchanges opened. Market darling NVIDIA hit a new intraday high of $974 before (presumably) the humans took over and sold the stock down more than 10% to close at $875.28. If our suspicions are correct that it was the AIs buying before the humans started selling (no doubt triggering trailing stops on the way down), the irony is not lost on us.

The 1-day chart for NVIDIA now makes for interesting viewing, because the red candle posted on Friday presents quite a strong bearish engulfing signal. Volume traded on the day was almost double the 15-day simple moving average, and similar price action is observable on the 1-day charts for both Intel and AMD. Regular readers will be aware that we have expressed incredulity in the past about the durability the AI thematic melt-up, so it will be interesting to see whether Friday’s sell off is just a profit-taking blip, or a genuine trend reversal.

AI equities aside, this week ought to be important for markets because the BTFP program expires today. That means that the Fed will no longer be loaning cash to the banking system in exchange for collateral pledged at-par. The KBW Regional Banking index has so far taken this in its stride and is trading 30% above the lows established during the mini banking crisis of this time last year, but the Fed’s liquidity facility was effectively an exercise in can-kicking that makes regional banks a sector of the market worth paying attention to in the weeks ahead. Even here in Sydney, regulators are warning of external risks posed to the banking sector from scheduled refinancing of commercial real estate loans following sharp falls in valuations.

Markets are sending signals in other sectors, too. Gold closed at a new record-high of $2178/oz on Friday after trading above $2200/oz briefly. Gold has been going ballistic since the Friday before last, posting gains even on days where 2-year Treasury yields have risen. Gold bugs are buying as real yields fall from the October highs and inflation breakevens creep higher. This is particularly interesting as gold ETFs have been recording net outflows; suggesting that price gains aren’t being driven by a retail pile-in. Are gold buyers now betting on a stagflationary outcome where the Fed cuts without inflation being anchored at the 2% target? The price action around the US CPI release tomorrow ought to be illuminating.

Leaving the day-to-day movements to one side, we are also seeing further signs of structural change at the macro level. The UK budget last week included a provision for the creation of a British ISA. That is, an Individual Savings Account that provides tax breaks to savers who invest their money in the stock of British companies. This follows moves last year to encourage pension funds to head up the risk curve by allocating 5% of their capital to unlisted investments.

As a Hail Mary option for a government cruising toward an electoral drubbing it’s a curious choice, but it’s worth highlighting as cash-strapped governments increasingly see private savings pools as a funding solution for their spending priorities.

Of course, the UK is not alone in making creeping moves towards financial repression. In contrast to announcements today of increased trade liberalisation, Australian Treasurer Jim Chalmers has in the recent past flagged his interest in tapping private pension savings to fund state spending priorities, including defence, public housing and renewable energy projects. Both the UK and Australia appear intent on finding ways to open up the lungs of their economies, but government wants more say in directing private capital flows for state goals.

So, how far is the blurring of the lines between free markets and state planning likely to go? Given the immense and varied budgetary (and security) pressures that governments are facing, could we see a re-up of WWII-era Victory bonds, where private investors are encouraged to do their patriotic duty by directly financing government at negative real rates?

That would really light a fire under the gold market.

Tyler Durden Mon, 03/11/2024 - 19:00

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