Maybe? We have been studying vaccines and how they work since the 1800s...we have a lot more history with vaccines and how they work compared to a Coronavirus.
And two of the available vaccines don't even give you a dead infection like most vaccines - you can't get COVID from the COVID shot (Moderna or Pfizer)
That would count if our question was “What are the likely side effects after one year?”
But it’s not. The question is long term side effects. Unless you have a time machine, I’m gonna say we can’t know those for quite a bit - unlike other vaccines which have decades of testing data.
