The site for the 21,000 in the USA, which the Wall Street Journal wrote about those who received the initial vaccinations and had a bad reaction is React 19. The number may be different now.
This might help explain a lot of why I have been so unclear in my thinking and it lists the vaccinations and the different things that people who had a bad reaction to the shot received. This is still not cleared up and it doesn't say if any who took the shot had autoimmune.
There is a site for other countries and that one I don't know how it is being put out. In the overseas site there is a different vaccination which was not used in the USA. Something to think about or ignore if you wish.