Absolutely. Easiest if they had a copy of clean code pre-vax. That's what's fucking up the vax right now. Its gotta be your own code, updated, put back into the transcription machine. Whose mRNA is in the vax? On basic ABO bloodtyping, you can see why there is a reaction. The mRNA from on O+ person injected into someone say with B-, just at the ABO level you are going to get clotting issues. At the epigenetic level, it's not YOUR code, it is someone elses. Try running Apple ProDos executables on a x86 platform. Not a great analogy but you get the drift.