COVID-19 mRNA vaccines teach our cells how to make a piece of a protein to trigger an immune response and build immunity to the virus that causes COVID-19. mRNA does not affect or interact with a person’s DNA, and the cell breaks down and gets rid of the mRNA as soon as it is finished using these instructions. Learn about mRNA vaccines and how they work:
https://www.cdc.gov/…/2019-ncov/vaccines/differen…/mrna.html
