Read
THIS article for an idea of how time was saved without cutting corners.
I already explained that "long term safety data" is functionally scaled to a few months for vaccines, not to years. The vaccine itself degrades in the body fairly quickly. It's not present in the body even a month, much less multiple years, down the line to cause future complications. Nor will the immune system spontaneously start doing something different (besides, perhaps, having its effectiveness wane) many months/years down the line in response to a stimulus that's no longer there.
We are
5+ billion doses given into this thing, with about 375 million of those being given in the USA, and the first doses were given to people (in testing trials) about a year and a half ago. We
have the long term safety data.
The timeline is because of how our immune response works. The delivery system itself (active, inactive, mRNA, whatever) is relatively meaningless. You introduce the foreign substance to the body, the immune response begins, the substance quickly degrades...and that's it. All that's left is the continuation of the immune response, and that's something we understand both the timing and the mechanism of very well.
If you're asking if there is anything about an mRNA delivery system that suggests there might be cause for concern extending well beyond the usual established timeline, or that might significantly alter the usual immune response timeline in some way, and the answer is no...no, there is not.
[Edited: My apologies. - EB]
I've already addressed a lot of these statements, but suffice to say that I think your underlying premise here has some faults.
If you built a bridge and told me it was safe, and
I told you that a bridge had never been built in this spot before so we have no idea if it is safe, and that I wasn't going to use that bridge until there was some "long term safety data" to prove that it was, how would you respond as an engineer?
You would probably have quite a few reasons for believing it to be safe based on your knowledge of how the bridge was specifically constructed, your understanding of the underlying theories supporting those choices, and your general expertise in the field...and you would almost certainly be right. But you would still be unable to satisfy my relatively ignorant and misguided demand for "long term data" that doesn't exist and doesn't prove...well, much of anything, really. No expert would justify his opinion that a bridge was sound/safe solely on whether or not it was still standing a few years later. They would confidently formulate that opinion up front before they ever let people on the darn thing based upon their knowledge of a whole host of relevant factors specific to the situation.
I know that the answer is irrelevant if your risk of becoming seriously ill or dying from Covid (regardless of how small) is a lot higher than your risk of becoming seriously ill or dying from the vaccine. To the best of my knowledge, there has been a literal handful of deaths directly linked to the Covid vaccine thus far (from J&J blood clots) after billions of doses given. Compare that to 4.5+ million deaths from Coronavirus out of millions of confirmed cases...
Just how bad are these potential "future safety issues," in your mind, to be an alternative that you fear more than the reality you are actually facing?