They are bioactive, not very radioactive....

Then why bring them up here at all? I hope it's not to push some backwards anti-vaccine bs.

Quite the contrary. It is based on the obvious premise that it's a good idea to get vaccinated.

Just because it is well known that vaccines come with a tiny, tiny risk of some complication doesn't mean we should not take them. They save a lot more lives than they take.

is the same as

Just because it is well know that nuclear power come with a tiny, tiny risk of some complication doesn't mean we should not use it. It saves a lot more lives than it takes.

Ah ok, thanks for clarifying!