My understanding -- as a non-virologist, non-doctor, non-scientist -- is that the mRNA vaccines are inherently safer than the "killed virus" vaccines like polio, flu, rabies, hep A because they are designed to attach to and attack the protein shell rather than the actual coronavirus inside the shell. We have indeed had marvelous success with the three big vaccines, with 12.7 BILLION doses now deployed.
Unfortunately, there is no vaccine for stupidity.
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