This may not be directly relevant to Australians, as far as I am aware, and I may be wrong, the Johnson & Johnson’s (J&J) COVID vaccine, will not be the key vaccine used in this country. Still, it is interesting to think about why the U.S. Food and Drug Administration (FDA) is to announce a warning on this COVID vaccine, as the shot has “been linked to Guillain–Barré syndrome (GBS), a “serious but rare” autoimmune disorder.” So, how does this happen with a vaccine? It does not seem to occur with say the tetanus vaccine. So, what is special about these Covid-19 shots? That has been answered in other blog articles at this site.