Even when looking at the numbers in the worst possible way, 269,555 deaths with Corona/Covid-19 on death certificate is 2.03% of 13,247,756 (the total tested positive). Meaning the human immune system is 97.97% effective.
For there to be any reason to have a vaccine, it’s going to need to be more than 97.97% effective, with no side effects.
Otherwise, there is no point at all in a vaccine that’s less effective than the human immune system is anyway. if there are side effects too, to it. It would have to be completely not worth it.
Can a vaccine ever beat 97.97% effectiveness with no side effects?