I guess I missed the story of those that grew horns or a 2nd head. I did not even know that was a possible side effect. Do you have a link? That is amazing. Was that in the US?The mDNA technology has been around for 10 years if not more. We would know if it wasn't any good by now. I believe it was created for another disease/illness then that technology was adapted for COVID. Yes, I've got both sets of immunization (Pfzier) and I've not grown a 2nd head or horns by now. I'm good with that.