Q. How do COVID vaccines stimulate an immune response?
(A) By introducing live attenuated SARS-CoV-2 virus
(B) By introducing a real SARS-CoV-2 virus
(C) By introducing a harmless piece of SARS-CoV-2 virus
(D) By introducing antibodies against SARS-CoV-2 virus
Answer: A
To trigger an immune response, many vaccines put a weakened or inactivated germ into our bodies. Not mRNA vaccines. Instead, mRNA vaccines use mRNA created in a laboratory to teach our cells how to make a protein—or even just a piece of a protein—that triggers an immune response inside our bodies.
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