Unfortunately as a result of original antigenic sin, the fact that the immune system has been trained for by a vaccine for a certain strain means that the body

Unfortunately as a result of original antigenic sin, the fact that the immune system has been trained for by a vaccine for a certain strain means that the body will respond to that strain, likely unable to mount a new defence for the different strain. https://pubmed.ncbi.nlm.nih.gov/33692194/ https://pubmed.ncbi.nlm.nih.gov/33692194/