<span>Hi !
Fertility and mortality rates are higher in more developed nations.
-True
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The advantage of the mRNA vaccines is that they don't use your body's own immune system.
<h3>What is mRNA vaccine?</h3>
The mRNA vaccine makes use of the messenger RNA to trigger the body into an immune response. This occurs by instructing the cells to make a protein that is similar to that of the attacking agent.
Thus, the advantage of the mRNA vaccines is that they don't use your body's own immune system.
Learn more about mRNA vaccine:brainly.com/question/23134032
# SPJ1
