It could also show age of patients. There is no doubt about vaccine efficacy. However it all depends. On your age, on your illnesses, on strains of virus. Who

It could also show age of patients. There is no doubt about vaccine efficacy. However it all depends. On your age, on your illnesses, on strains of virus. Who knows what you will get in 2 years. So people who say that "pfft it is only 2% chance and only if you get" are just denying it. You will get COVID. Hopefully you get it after a few years when there are not only vaccines but drugs widely available.