Heppenheimer
Well-Known Member
And this is where those pushing misinformation find their crucial in-road.r. Most of us who like to do our research count on long term data.
It bears repeating again and again, since this narrative constantly comes up. Out of all vaccines ever developed, the longest latency to the appearance of a severe side-effect is about 6 weeks, which is about the absolute most extreme time limit for cases of Guillan-Barre syndrome, a disease that can rarely be related to vaccination, but far more commonly associated with bowel infections. Based on this well-known history, the standard observation period for vaccine testing generally lasts about 3 months, out of an abundance of caution. Beyond that, there really isn't a conceivable biological mechanism by which a vaccine could cause a long delayed side-effect. The actual physical material of the vaccine has long since been degraded and excreted. The lasting effect of the vaccine is due to the army of white cells recruited to fight the targeted infection, not due to any lingering physical or chemical properties of the vaccine itself. If the vaccine doesn't cause a direct side-effect, the only other possibility is through an autoimmune reaction from the selected white cells. But these are fully selected and recruited within 2-4 weeks after receiving the vaccine. If there is an autoimmune reaction, it will occur then or soon thereafter, not months or years later. So, there really is experience and a firm scientific understanding on why the standard safety observation periods for vaccines, which all of the COVID vaccines underwent, is more than adequate.
Now, there is the possibility of adverse reactions too rare for the trials to pick up. We saw this with the cerebral venous sinus thrombosis associated with the AstraZenica and Johnson & Johnson vaccines. But this was not a matter of insufficient safety observation, since the temporal association of the clotting with the vaccines is pretty quick. Rather, the side effects were too rare to be seen in their testing populations, which numbered less than 50,000.
The standards for drug testing are different because unlike a vaccine, people generally take medications daily. Accumulated toxicity over years is a possibility, particularly for certain medications, so different safety standards apply. But the difference between drug and vaccine testing is not well appreciated by the general population. Hence, all the "we don't know the long term side effects" stuff that has found fertile ground through social media.
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