What proteins are you measuring? The point of mRNA vaccines is to generate the proteins inside the (dendritic) cell so that the MHC 1 and 2 type can digest the

What proteins are you measuring? The point of mRNA vaccines is to generate the proteins inside the (dendritic) cell so that the MHC 1 and 2 type can digest them and present them on the surface so that T cells get trained. This process is rather destructive and T cells can generalize across mutation more easily than igM and igG antibodies generated from the proteins can. If we take the linked editorial at face value this would explain it. But I wouldn't do that without an unhealthy amount of salt.