- Sep 4, 2005
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I think the focus on pericarditis and myocarditis during COVOD have introduced those terms to the public more widely, and my understanding is that the replicating vaccines have issues with that.
The more recent vaccine that we just purchased is non-replicating, and uses a different mechanism which, in theory, has less issues, but has not been around as long.
I guess it would depend on people's perception of "a long time".
It's the one that the US military switched to in 2008 after its approval, and has administered over 1.4 million doses to military personnel since then, and millions of doses administered in Africa over the past 15 years, and was basically a lab-grown version of Dryvax, whereas instead of using calf skin cells like Dryvax (which was made in the 1940's), it uses cultured monkey cells, and targets the same strain.
So ACAM2000 isn't "new" in the same sense that the covid vaccines were "new" (and truth be told, mRNA technology wasn't as "new" as some people were making it sound either, as phase 3 & 4 clinical trials had been testing that since the early-mid 2000's)
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