My wife's friend has had two jabs and went for her booster yesterday, they wouldn't give it her, something to do with her bloods.
So there must be side effects that they aren't telling us about.
A few people I know have had the booster and felt terrible after for days.
This vaccine was developed very quickly in a matter of months, I would wager that the developer's of it still don't know the long term effects.
I remember Thalidomide and the effects of that.