“A study from Stanford University, published in Cell , has found that vaccine mRNA and spike protein persist in lymph nodes for up to two months following the second vaccine dose. This is in contrast to what happens following infection, where spike protein was found only rarely.”
"The researchers found evidence of ‘original antigenic sin’ from the vaccines, where a person vaccinated and then infected with a variant develops a weaker antibody response to that variant than an unvaccinated person infected with the variant. They describe it as a “strong imprinting effect of prior vaccination”.
" The high concentration in the blood of spike protein following vaccination and its persistence along with vaccine mRNA in lymph nodes for months, in contrast to the situation post-infection where such persistence is rare, will fuel concerns about the safety of these Covid vaccines. It has been argued that the spike protein is itself pathogenic, not inert, and that the free spike proteins generated by the vaccines have greater capacity to bind to more types of cells than the virus particles themselves, and that this may be what lies behind many of the serious adverse events reported to regulatory bodies and identified in case reports. This warrants further investigation."