Why has the CDC been lying about this for the last two years and insisting that the mRNA “stays in the arm?” Well, the obvious answer is that the idea of the mRNA staying at the injection site is reassuring, since otherwise we could fear systemic adverse effects of precisely the sort that have emerged since rollout.
BioNTech simply skipped the so-called safety pharmacology studies whose purpose is precisely to test a candidate vaccine for potential systemic adverse effects – and regulators, including the FDA, let the company do it.
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