<i>Moderna loads its vaccine with mRNA that codes for the right coronavirus proteins which then get injected into the body. Immune cells in the lymph nodes can process that mRNA and start making the protein in just the right way for other immune cells to recognize and mark them for destruction.<p>As Dr. Stephen Hoge, president of Moderna, told TIME earlier this month, “mRNA is really like a software molecule in biology. So our vaccine is like the software program to the body, which then goes and makes the [viral] proteins that can generate an immune response.”</i><p>That's pretty interesting, has this worked for any other virus?