This meta-study summarises various studies that look into reported cases of auto-immune problems after vaccination. Most of these are in the order of 1-2 cases

This meta-study summarises various studies that look into reported cases of auto-immune problems after vaccination. Most of these are in the order of 1-2 cases per million vaccine doses, and often close to the natural background rate of these problems manifesting in otherwise healthy individuals: If you look at 100,000 people for a year, you expect 2 of them to contract Guillain–Barré syndrome naturally, 1 to develop blood clots, etc. pp. So the various studies also determine if there even is a statistically significant increase or not, which there sometimes is, sometimes isn't. The meta-study summarises all that. And even taken together, all the various problems are not significant enough to counterindicate any of the vaccines, given just how much more dangerous covid infections are: > Although allergic reactions to vaccines are rare, as vaccination programmes are being rolled out globally, many vaccine-related side-effects are being reported. Importantly, we do not aim to disavow the overwhelming benefits of mass vaccination with COVID-19 in controlling COVID-19 pandemic and preventing COVID-19 morbidity and mortality. We encourage and support COVID-19 vaccination globally to create an immunity barrier among population.