Quote:
Originally Posted by john70t
Doesn't that contradict it's very purpose?
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Read the Reuters link or search online. In that link it says "
Both the Moderna and the Pfizer-BioNTech vaccines use new messenger RNA (mRNA) technology, which contains instructions for human cells to make proteins that mimic part of the novel coronavirus. The instructions spur the immune system into action, turning the body into a virus-zapping vaccine factory. No actual virus is contained in the vaccines (here)."
The mRNA vaccines have the cells make an enemy protein that a traditional vaccine would normally introduce directly. This feature allows mRNA vaccines to changeable so the protein the cells make can follow the variants as necessary.