While not exactly mRNA vaccines, I think we will ultimately see the use of RNAi as a way to modulate gene expression in humans. It's already being done in many

While not exactly mRNA vaccines, I think we will ultimately see the use of RNAi as a way to modulate gene expression in humans. It's already being done in many organisms. Imagine a technology that can perform RNAseq via some wearable instrument like an apple watch or an implant. We'll collect temporal gene expression data on important physiological functions, and address the results with a pill containing some stable RNAi molecule which will downregulate that function.