~2 weeks ago, the FDA added a warning to the J&J Covid shot regarding increased risk of developing Guillain-Barré Syndrome.

Perhaps unsurprisingly, given the history with blood clots, my quick check of prevalence finds that reports of developing GBS following J&J vaccination are actually less than would be expected otherwise.

My very basic analysis: https://docs.google.com/spreadsheets/d/1wDFrDq0E6Q096E97XzU7ndP53mYC0Paf9Wyun-XxmWA/edit?usp=sharing

Numbers from: https://www.yalemedicine.org/news/covid-vaccine-guillain-barre-syndrome

EDIT: Analyzed another way, GBS cases may be 3-4x more common in J&J vaccine recipients than base rates (still highly uncommon, but I see the potential association).