The spike protein is the outer spike of the corona virus which locks into the ACE2 RECEPTOR.... ok, passed the first test, normal vaccines present a deactivated virus which stimulates the the immune system to recognise the live virus and mount a response. This Vax does nothing of the sort, it delivers instructions for your body to produce spike protein such that the immune system learns to fight this intruder, unfortunately, it's crude, it doesn't tell it where to go in the body or when to stop producing spike. They seem to have chosen a segment of the virus which is easily created but your immune system no longer recognises it post 6 months. Strange, but that is not what a vaccine is meant to do. has the virus' spike protein changed from Alpha to delta? Why do you need a booster again?
