May be that initially the vaccine was protective. However, the virus it protected against has been mutated out of existence.
One thing that bothers me is that it would seem impossible to mass produce the vaccine that has so many critical components that have to fit together, without compromising the integrity, the unbelievable intricate complexity of the final product. I have seen videos of the production; not much different than mass producing cokes. It is hard for me to believe that a safe dose is produced without fail each time the vial is sealed and refrigerated at the extreme temperature.
Yep. I suspect their is some evidence to support that it helped in say, nursing homes early on bit the it no longer stopping any spread, sickness, etc.