How Do COVID-19 mRNA Vaccines Work?

How Do COVID-19 mRNA Vaccines Work?

First, COVID-19 mRNA vaccines are given in the upper arm muscle. The mRNA will enter the muscle cells and instruct the cells’ machinery to produce a harmless piece of what is called the spike protein. The spike protein is found on the surface of the virus that causes COVID-19. According WHO,  Vaccines contain weakened or inactive parts

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