Many vaccines have some of the side effects of infection.
One such side effect (of both vaccine and disease) is minor neurological impairment. ie. you might not be able to remember where you parked your car last tuesday afterwards.
The side effects are typically so minor and/or rare that the risk-benefit analysis strongly favours taking the vaccine over risking getting the infection.
It's a controversial topic because humans are bad at judging small risks, and therefore there are groups of people 'scared' of the side effects of the vaccine and unconvinced by experts saying the risk-benefit is worth it. Some experts believe it is better to say "it is safe" rather than try to explain that there are in fact risks, but they're risks worth taking.
Note: The above isn't covid specific - the same could be said of nearly any disease and vaccine.
One such side effect (of both vaccine and disease) is minor neurological impairment. ie. you might not be able to remember where you parked your car last tuesday afterwards.
The side effects are typically so minor and/or rare that the risk-benefit analysis strongly favours taking the vaccine over risking getting the infection.
It's a controversial topic because humans are bad at judging small risks, and therefore there are groups of people 'scared' of the side effects of the vaccine and unconvinced by experts saying the risk-benefit is worth it. Some experts believe it is better to say "it is safe" rather than try to explain that there are in fact risks, but they're risks worth taking.
Note: The above isn't covid specific - the same could be said of nearly any disease and vaccine.