Tag Archives: immunity

Vaccine Update: The Impact Of The Moderna Vaccine (Beyond COVID-19)

Sometimes, it takes a terrible global crisis to spurn huge leaps in technology. World War II was arguably the greatest crisis of the modern era, but it helps advance some of the greatest technological leaps in history. We can argue whether those advances were worth all the death and destruction, but there’s no denying that our world wouldn’t be the same without them.

The COVID-19 pandemic isn’t on the same level as World War II, but it is, by most measures, the greatest crisis the world has faced in the past 50 years. It hasn’t just caused hundreds of thousands of deaths and immeasurable amounts of suffering. It has completely disrupted this big, interconnected world that we’ve come to depend on.

We’ve all lost something in this pandemic. Beyond the loved ones who have perished, our entire sense of security and hope has been shattered. We now realize just how vulnerable we were and how inevitable this was. As bad as it is, there is some good coming out of it.

Usually, a crisis like this helps break down the barriers that divided us and hindered progress, technological or otherwise. Never before has the world been more united or engaged in a singular effort. Before 2020, we probably didn’t know much about vaccines or vaccine research. We just knew that Jenny McCarthy tried to be relevant again by protesting them.

That’s changing now. The global effort to create a vaccine for this terrible disease has been watched and agonized over for months. Most recently, we got a much-needed glimmer of hope from Pfizer, who reported that their vaccine is 90 percent effective. I celebrated this news like everyone else.

Then, we got an even greater glimmer of hope from the other vaccine front-runner by Moderna. Not only is their vaccine in the final phase of testing, like Pfizer. It’s even more effective and promises to be easier to store and distribute.

CNN: Moderna’s coronavirus vaccine is 94.5% effective, according to company data

The Moderna vaccine is 94.5% effective against coronavirus, according to early data released Monday by the company, making it the second vaccine in the United States to have a stunningly high success rate.

“These are obviously very exciting results,” said Dr. Anthony Fauci, the nation’s top infectious disease doctor. “It’s just as good as it gets — 94.5% is truly outstanding.”

Moderna heard its results on a call Sunday afternoon with members of the Data Safety and Monitoring Board, an independent panel analyzing Moderna’s clinical trial data.

This is objectively great news in a year when we’ve had precious little of it. These two vaccines may very well be the one-two punch we need to end the COVID-19 pandemic and return to some semblance of normalcy. I would still like to go to a movie theater or baseball game at some point in 2021. These vaccines may make that possible.

However, I’d like to take a moment to speculate beyond this terrible pandemic that has uprooted so many lives. I know that’s not easy to do when the crisis is still very relevant and inflicting plenty of suffering. I still think it’s worth attempting, if only to imagine the better world that emerges from this mess.

That’s because both these vaccines aren’t like your typical flu shots. For one, flu shots aren’t nearly as effective as what Pfizer and Moderna reported. According to the CDC, you’re average flu shot is between 40 and 60 percent effective. That’s still important because the flu can be deadly. Anything you do to reduce it can only further public health, in general.

The problem is the flu shot, and most vaccines like it, are based on old technology. At their most basic, they take a non-infectious or weakened strain of a pathogen and use it to amp up your body’s immunity. It’s crude, but it works. Literally nothing has saved more lives than vaccines.

The problem is that vaccines are notoriously hard to develop. They take a long time to test and an even longer time to approve. Until this pandemic, there just wasn’t much incentive to improve on that process. Now, after these past 8 months, the incentive couldn’t have been greater.

That’s what sped up the development of mRNA vaccines, the technology behind both Pfizer and Moderna. It was reported on as far back as 2018. While this technology isn’t completely new, it has never been developed beyond a certain point. There just wasn’t any incentive to do so. A global crisis changed that.

Very simply, an mRNA vaccine does one better on traditional vaccines by using RNA to develop immunity. It’s not as easy as it sounds. To develop that immunity, it has encode itself with just the right antigen. That way, the antibodies it creates can attack the desired pathogen.

In the case of COVID-19, the mRNA vaccine attacks the distinct spike protein the virus uses to attach to host cells. It’s like a missile targeting a specific individual in a large crowd by locking onto the distinct hat they wear.

This approach has the potential to be much more effective at generating immunity to a particular disease. Instead of trying to mimic a virus, it just gives the immune system the necessary software it needs to do the work. It could potentially revolutionize the way we treat and prevent diseases.

For years, certain viruses like the flu and HIV have confounded efforts to develop a vaccine. Beyond the problems I listed earlier with regards to testing, the difficulty of creating a particular immune response to a particular antigen is very difficult. These viruses mutate and change all the time. With COVID, vaccines do have an advantage because they have a distinct feature.

The challenge for future vaccines against future pandemics is quickly uncovering a particular antigen that the mRNA can be coded for. In theory, all you would have to do is find the one key antigen that’s common to every strain of the virus. While viruses like the flu are notoriously diverse, they can only change so much.

It’s akin to trying to identify an army of spies in a large crowd. They may all look different on the outside, but if they all have the same socks, then that’s what you code for. With some refinements, an mRNA vaccine can stop a pandemic in its tracks before it ever gets beyond a certain point.

That assumes we’ll continue to refine this technology after the COVID-19 pandemic has passed. I certainly hope that’s the case. This year has traumatized entire generations with how much pain and suffering it has inflicted. I sincerely hope that gives plenty of motivation to develop technology like this. That way, we never have to endure a disruption like this again.

To all those who helped develop this technology and these two vaccines, I hope you appreciate the impact you’ll make with this technology. The number of lives they could save is incalculable. Future generations may not remember your names, but they will be forever grateful for this wondrous gift you’ve given them.

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The First Genetically Modified Humans Have Been Born: Now What?

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When the USSR launched Sputnik 1 on October 4, 1957, it didn’t just kick-start the space race. It marked a major technological paradigm shift. From that moment forward, venturing into space wasn’t just some futuristic fantasy. It was real and it had major implications for the future of our species.

On November 26, 2018, a Chinese scientist named He Jiankui announced that the first genetically modified humans had been born. Specifically, two twin girls actually had their genetic code modified at the embryonic stage to disable the CCR5 gene to make them highly resistant to HIV/AIDS. In the history of our species, this moment will likely exceed the importance of Sputnik.

This man may have just upstaged Neil Armstrong.

To appreciate why this is such a big deal, consider the full ramifications of what Mr. Jiankui achieved. The change he made to the genome of those girls was impossible for them to inherent. This particular allele is a result of a mutation within a small population of Northern Europeans and is present in no other ethnic group. It is best known for providing significant immunity to common strains of the HIV virus.

This is of significant interest to China because they’ve been dealing with a surge in HIV/AIDS rates in recent years. Even though AIDS isn’t a death sentence anymore, the medicine needed to manage it is costly and tedious. These two girls, who have not been publicly named thus far, may now have a level of resistance that they never would’ve had without genetic modification.

On paper, that’s an objective good. According to the World Health Organization, approximately 35 million people have died because of AIDS since it was first discovered and approximately 36.9 million people are living with the disease today. It’s in the best interest of society to take steps towards preventing the spread of such a terrible disease, especially in a country as large as China.

However, Mr. Jiankui has caused more consternation than celebration. Shortly after he announced the birth of the two unnamed children, China suspended his research activities. Their reasoning is he crossed ethical boundaries by subjecting humans to an untested and potentially dangerous treatment that could have unforeseen consequences down the line.

Those concerns have been echoed by many others in the scientific community. Even the co-inventor of CRISPR, the technology used to implement this treatment and one I’ve cited before as a game-changer for biotechnology, condemned Mr. Jiankui’s work. It’s one thing to treat adults with this emerging technology. Treating children in the womb carries a whole host of risks.

That’s why there are multiple laws in multiple countries regulating the use of this technology on top of a mountain of ethical concerns. This isn’t about inventing new ways to make your smartphone faster. This involves tweaking the fundamental code of life. The potential for good is immense, but so is the potential for harm.

Whether or not Mr. Jiankui violated the law depends heavily on what lawyers and politicians decide. Even as the man defends his work, though, there’s one important takeaway that closely parallels the launch of Sputnik. The genie is out of the bottle. There’s no going back. This technology doesn’t just exist on paper and in the mind of science fiction writers anymore. It’s here and it’s not going away.

Like the space race before it, the push to realize the potential of genetic modification is officially on. Even as the scientific and legal world reacts strongly to Mr. Jiankui’s work, business interests are already investing in the future of this technology. The fact this investment has produced tangible results is only going to attract more.

It’s impossible to overstate the incentives at work here. Biotechnology is already a $139 billion industry. There is definitely a market for a prenatal treatment that makes children immune to deadly diseases. Both loving parents and greedy insurance companies have many reasons to see this process refined to a point where it’s as easy as getting a flu shot.

Even politicians, who have historically had a poor understanding of science, have a great many reasons to see this technology improve. A society full of healthy, disease-free citizens is more likely to be prosperous and productive. From working class people to the richest one percent, there are just too many benefits to having a healthy genome.

The current climate of apprehension surrounding Mr. Jiankui’s work may obscure that potential, but it shouldn’t surprise anyone. During the cold war, there was a similar climate of fear, albeit for different reasons. People back then were more afraid that the space race would lead to nuclear war and, given how close we came a few times, they weren’t completely unfounded.

There are reasons to fear the dangers and misuse of this technology. For all we know, the treatment to those two girls could have serious side-effects that don’t come to light until years later. However, it’s just as easy to argue that contracting HIV and having to treat it comes with side-effect that are every bit as serious.

As for what will come after Mr. Jiankui’s research remains unclear. I imagine there will be controversy, lawsuits, and plenty of inquiries full of people eager to give their opinion. As a result, he may not have much of a career when all is said and done. He won’t go down in history as the Neil Armstong of biotechnology, but he will still have taken a small step that preceded a giant leap.

Even if Mr. Jiankui’s name fades from the headlines, the breakthrough he made will continue to have an impact. It will likely generate a new range of controversy on the future of biotechnology and how to best manage it in an ethical, beneficial manner. It may even get nasty at times with protests on par or greater than the opposition to genetically modified foods.

Regardless of how passionate those protests are, the ball is already rolling on this technology. There’s money to be made for big business. There’s power and prosperity to be gained by government. If you think other countries will be too scared to do what a science team in China did, then you don’t know much about geopolitics.

Before November 26, 2018, there were probably many other research teams like Mr. Jiankui who were ready and eager to do something similar. The only thing that stopped them was reservation about being the first to announce that they’d done something controversial with a technology that has been prone to plenty of hype.

Now, that barrier is gone. Today, we live in a world where someone actually used this powerful tool to change the genome of two living individuals. It may not seem different now, but technology tends to sneak up on people while still advancing rapidly. That huge network of satellites that now orbit our planet didn’t go up weeks after Sputnik 1, but they are up there now because someone took that first step.

There are still so many unknowns surrounding biotechnology and the future of medicine, but the possibilities just become more real. Most people alive today probably won’t appreciate just how important November 26, 2018 is in the history of humanity, but future generations probably will, including two remarkable children in China.

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