Yes, you have a point there.
Though if you were the one making the decision, would you have cancelled the rollout of the mRNA and adenovirus vector COVID vaccines on these grounds?
On the one hand you have the possible adverse effects of these two new vaccine technologies; and on the other hand, you have millions of older or vulnerable people that COVID may kill if they do not receive this vaccine protection.
If I were the one making the decisions I'd want someone to give me a damned good reason why this vaccine needed to be developed with this mRNA technique.
At the end of the day, you had four major vaccines in the West - Pfizer, Moderna, J&J, and Oxford/AstraZeneca.
The J&J vaccine got pegged pretty early for causing clotting issues. But, ultimately all the vaccines were found to have clotting disorders as potential side effects and that may simply be inherent in using spike protein at the vaccine target. J&J was always a distant 3rd place in the US and was ultimately withdrawn, but I think if you look carefully at the adverse risks you'll see it was actually similar to Moderna/Pfizer with respect to clotting which was only admitted as a side effect of those vaccines later.
Oxford/AstraZeneca was never approved in the US, but was used in the UK and the EU with success. It also had the issues with some patients clotting the same as J&J and the rest.
So you had two mRNA vaccines and two adenovirus vaccines. Had Moderna and Pfizer pursued something besides mRNA we would of course had other non-mRNA options.
My issue with the mRNA vaccine is that it is clear this was not the only viable technique. So why did two major drug companies pursue it? Because both of them had been trying to move mRNA vaccines out of the lab and into the field for almost 20 years without success. And the fact is, the normal rules frequently get thrown out the window in an emergency. You can do things in a crisis that you can never do in a normal time.
So I think Pfizer and Moderna both saw an opportunity to get an mRNA vaccines widely deployed which would break the log jam on getting approval on all the other mRNA applications they have in mind. And it worked. Other mRNA vaccines (mostly for oncology) are now moving fairly swiftly through the process. So I understand their motivation.
What I don't understand is why the FDA would play along with this gambit. They well knew that this vaccine was going to get a very quick evaluation and would swiftly be used on 100's of millions and then billions of patients. And they chose this very risky path when it was clearly not the only path. From a scientific point of view, from a risk assessment point of view, I don't think it ever made sense. But, given the revolving door between the FDA and the pharmaceutical industry and Moderna/Pfizer's desire to move this technology out of development hell, it makes perfect sense.
Let's hope it pays off. Let's hope there are no long term issues with these vaccines and this technology. If that turns out to be the case, then we will reap a bounty for all the other applications of mRNA technology.
Let me close with the real irony here - Those 20 odd years that mRNA cancer vaccines languished in the lab due to the FDA's normally extremely high degree of risk aversion - that's exactly when this vaccine should have been trialed. They should have been doing trials on patients with cancer types with a very poor prognosis and giving them the option of having access to these vaccines. If you were just diagnosed with pancreatic cancer, trying this new unproven technology is potentially a really good deal for you and the downside risks are almost none, as you're going to be dead from cancer in less than a year anyway. So when 2020 rolled around and covid popped up, we should have had a good decade of experience with mRNA vaccines in numerous trials.
Instead, because the FDA is so normally risk adverse they refused to give access to mRNA technology to limited numbers of people that had already had potentially terminal diagnosis. Which then perversely lead them to throw caution to the wind and give these vaccines to a billion people that might get covid and might have a 0.1% chance of dying from it.
Just think on that a bit.