Expected Covid-19 vaccine.. Are we faraway from health related technologies...? - Tech updates

Expected Covid-19 vaccine.. Are we faraway from health related technologies...?

COVID-19 is one of the largest and most immediate threats to human life in the modern-day, with millions of infections and hundreds of thousands of deaths to its name.

The COVID-19 vaccine that will grant us immunity from this terrifying virus but, we’re sorry to report that getting an effective vaccine for COVID-19 isn’t necessarily in the cards. It is the most dangerous and complicated problem that is being faced by humanity today, the hope for a simple, silver-bullet answer to our problems might just be a futile and even dangerous fantasy. You’ll likely see countless articles about the various vaccine development projects across the globe, and how all of these tests are claiming to be standing on the doorstep of a breakthrough. However, experts like Michael Oster holm, director of the University of Minnesota’s Center for Infectious Diseases Research and Policy, think that news like this is building dangerous false hopes among the public. This virus is taken light because it is being said that we are going to get its vaccine in the next few months which is wrong both in terms of its immediate negative effects and it's potential to infect even wider swathes of the global population. Even if we do get lucky and find a workable vaccine, the battle would be far from over. In Oster holm’s own words, “even if we had a vaccine that showed some evidence of protection by September, we are so far from having a vaccine in people’s arms, And even that feels optimistic compared to the possibility that a vaccine might always continue to evade us.

Today, we’re going to explore that worst-case scenario: The fact we may never see an effective vaccine for this virus, why this might be the case, and what a future where COVID-19 is never fully wiped out could look like. First, with so much seemingly positive news about vaccine development breaking every day, why might all of this come to nothing? After all, we’ve come up with successful vaccines for horrific viruses in the past, like Smallpox and Polio, so why not COVID-19? Well, this situation is a lot more complicated than most of the general public currently understands. The degree to which a virus is amenable to an effective vaccine has less to do with the symptomatic traits of the virus, and more to do with – as veteran researcher Adolfo García-Sastre puts it – the “specific characteristics of how the virus infects.” Hence why a disease as deadly as Smallpox can be conquered, and disease as annoyingly simple as the common cold continues to be impossible to vaccinate against.

Unlucky for us, all evidence currently points to COVID-19 being closer to the common cold on this scale than something like smallpox. Naturally, this is extremely concerning because the rate at which COVID-19 causes serious illness and even death in its victims is also far closer to smallpox. Researchers have found that the characteristics of COVID-19, in terms of its virulence, are extremely similar to that of an earlier coronavirus: SARS, which came to prominence in the early 2000s. Unlike with COVID-19, SARS was caught and contained rapidly, leading to it burning itself out after only killing 700 people, compared to COVID-19’s multiple hundreds of thousands of deaths. At the time, scientists developed two different vaccines for SARS that they tested on lab animals and found some extremely disturbing effects: While the vaccine did activate antibodies in the immune system that allowed the test subjects to respond to SARS, the antibodies weren’t actually enough to stop the virus from causing serious damage.

A quick science lesson on how vaccines work: Vaccines introduce molecules of certain viral or sometimes bacterial pathogens – known as antigens – into the body to train the body’s immune system to recognize and fight a pathogen. The body already does this naturally, but this can take valuable time – time during which the disease can progress to dangerous levels. Vaccines allow the body to have the antibodies before the first infection even begins. This essentially nips a burgeoning pathogenic threat in the bud, unless a pathogen undergoes a regular antigenic shift, like the flu virus or common cold. This means new antibodies will need to be produced for each strain of the pathogen that mutates. Rachel Roper, a professor of immunology at East Carolina University who played a part in those aforementioned SARS tests believe there's credible evidence to indicate that COVID-19 might just be resistant to vaccination altogether. And it’s not just SARS that sets the precedent for this.

The FDA has never approved a single viable vaccination against any coronavirus, including SARS, MERS, and the common cold. In some ways, it would actually be more surprising to find that they could develop a vaccine for COVID-19. There’s also a common saying in scientific research circles “mice lie, and monkeys don’t tell the truth.” Meaning that results discovered in animals aren't always generalizable to human subjects – so even promising results in mice don’t necessarily mean those same results will carry over to humans. Researchers like Roper have also highlighted the possibility that rushing into a bad vaccine could be far worse than not having any vaccine at all. Experts have pointed to past horror stories like Dengvaxia, 2016 vaccine for the notoriously vaccine-resistant dengue-fever that was used on around 800,000 Filipino school children and had some disastrous results. Authorities looked into the deaths of 600of these children, all of which were possibly killed by a phenomenon known as “immune enhancement.” This is when, due to poor design and testing, a vaccine does the opposite of what it was intended to do and instead of helping the body, makes the infection worse. This is because, in the event of immune enhancement, the antibodies actually help the virus progress further through the body rather than preventing it. While instances like this are relatively rare– and definitely shouldn’t be used as proof by anti-vaxxing soccer moms who are in the process of bringing back measles – but it’s still a risk worth considering before anyone tries to rush in with a half-baked vaccine plan. However, while a badly-made vaccine could be calamitous, vaccines that only work for a relatively short period of time could still be useful, as they may at least slow some of the spread of the virus.
While it’s become clear that some countries have most likely been hiding or misreporting the true extent of their infections, antibody data coming out of China has raised some more cause for vaccine concern. Patients who recovered from the virus showed low antibody count, meaning that people who’ve caught the virus in the past or get vaccinated for it, are at risk of getting infected again either way – though scientists will need more data on this before making any conclusive observations. Christopher Whitty, the UK’s Chief medical officer, also shared some pretty grim tidings as a result of his team’s research. He said there’s been “concerning” evidence that it may be impossible, artificially or otherwise, to stimulate long-term immunity from the virus, seems to corroborate the results of the Chinese data. He does offer a small glimmer of hope in this, saying it doesn’t necessarily mean there’s no chance for a somewhat effective vaccine.
However, it does cast some serious doubt on whether a lifelong vaccine for COVID-19 could ever be developed. You may be tempted to think, “Well, look at the rate that COVID-19 is infecting and killing people. Surely that would be effective motivation to develop a vaccine as soon as possible, with the world’s united resources.” But once again, historical precedent steps in to dash these overly optimistic hopes. HIV was first officially discovered and named in 1984, and in the several decades since it’s killed over 32 million people. Still no vaccine, in spite of the devastating human toll and the billions of dollars spent on research over the years. Scientists have had similar difficulties creating an effective vaccine for adenoviruses and rhinoviruses, which can have similar symptomatic effects to coronaviruses like COVID-19. Of course, none of these viruses are exactly the same as COVID-19 in terms of its virulence and its rate of mutation –
The two deciding factors in the effectiveness of a vaccine, but it does stand to prove an important point: We’ve had high hopes for different vaccine development plans in the past, only to be brutally disappointed by the outcomes. In the grand scheme of things, we’re still in the very early days of COVID-19, and as more data about the disease trickles in overtime, we’ll gain a better understanding of what exactly we’re dealing with here. So that’s why we may not be able to count on a COVID-19 vaccine to swoop down like superman and save the day, now the real question is: What does this actually mean for all of us? If we’re not all biding time for the development of a vaccine here, what’s the end game for our global fight against the disease? Well, we must once again turn to history for this. The groups of experts who’ve cautioned against putting all of our eggs inside the vaccine basket have instead suggested a set of sweeping societal reforms that would allow us to adapt to the presence of COVID-19.
David Nabarro, professor of global health at Imperial College, has said that figuring out ways to work around the constant threat of the virus through individual choices and government legislation is really the only anti-COVID-19 method we can truly rely on. This is referred to as “Plan B”, with plan A being the expression for the traditional vaccine path to ending the current global crisis. Take the afore mentioned HIV/AIDS pandemic that's been raging since the early eighties. Thanks to impressive developments in antiviral drugs, HIV is no longer the absolute death sentence it used to be – with many HIV positive people living long and fulfilling lives. The creation of pre-exposure prophylaxis, or PrEP (Narrator note: pronounced “prep”), medication has also gone a long way in preventing further infections in the absence of a viable vaccine.
While some research teams race to find a potential vaccine for COVID-19, others race to find useful antiviral drugs for treating patients currently suffering from the disease. If a cheap and effective antiviral drug was found, it could circumvent the vaccine issue by massively reducing the severity of the cases, if not the overall number. You’ve probably heard a number of options paraded as “miracle cures” in the news – from the Hydroxychloroquine championed by US President Donald Trump to the anti-Ebola drug redeliver, to experimental blood plasma treatments. Of course, all of these are essential shots in the dark at the moment, and anyone trying to tell you otherwise is more than likely trying to sell you something.
On the upside, if any of the antiviral drugs being tested to treat COVID-19 do turn out to be effective, we should find this out in the coming weeks, as randomized antiviral drug trials are an exponentially faster process than vaccine testing. However, it’s still worth asking: What if our savior doesn’t come in the form of antiviral drugs, either? What does a world without vaccines and antiviral drugs for COVID-19 look like? It’s likely that the world may, in time, return to some semblance of a new normal. While a truly extensive lockdown would be the most effective way to let COVID-19 burn itself out – think the course of the SARS infection, just on a much wider scale – it would also likely lead to global economic collapse. Therefore, what most experts recommend is the slow easing of containment procedures in several months’ time, but only if buttressed by regular mass testing to detect and stomp out pockets of the virus before they can become epidemics.

This new way of living would also be built around the idea that lockdowns can restart at any time if deemed necessary, so its likely periods of quarantine would come in fits and starts for years to come in order to minimize damage. This new normal would also feature a certain degree of social distancing as standard, changes to social norms like the elimination of shaking hands, and the expectation of a constant state of caution and vigilance. Of course, it’s worth noting that, when all is said and done, many experts still believe that creating a viable vaccine for COVID-19 is a strong possibility – and the debate of whether COVID-19 is vaccine-resistant or not is a contentious one, that will require more data from cases and studies to truly answer. However, even if – in the best-case scenario– we do manage to create a workable vaccine and accompanying antiviral treatments, we'll all be better off for exercising the caution and consideration that comes with knowing just how bad the worst-case scenario can truly be.

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