> They're literally changing nothing except the mRNA sequence. This is like comparing my house to the Willis Tower and saying, "they're literally changing noth

> They're literally changing nothing except the mRNA sequence. This is like comparing my house to the Willis Tower and saying, "they're literally changing nothing except the blueprints." mRNA codes for proteins. Coding for a different protein will produce different effects in the body. Most will probably be harmless. If a vaccine codes for a protein too similar to proteins that already exist, that vaccine will produce autoimmune disease.