Did the covid vaccine cause stiff person syndrome in Celine Dion?
How do we calculate the probability of causation?
DRAFT VERSION NOT FOR DISTRIBUTION
On 8 Dec 2022 Celine Dion announced that the serious health problems she has suffered recently were due to a rare condition called Stiff Person Syndrome (SPS) (this article by Scott McLachlan incudes relevant background information about SPS).
There was no mention of Celine’s vaccine status or the fact that SPS is a kno…
