Go do some reading on the history of it. It EVENTUALLY after SEVERAL TRIES worked. Yes a couple times in the different vaccines many people were actually given Polio from it. The C 19 shots are not stopping C-19 completely and neither did the Polio vaccines when first developed. But those who take the C-19 if the get C-19 have milder cases and are far less likely to DIE. Vaccines of any type have never been without risk. I do know my cousins family who didn't take the shots now have.
The cause of the spread of C-19 points more towards Bidens unchecked borders. For example Tennessee has a high number of cases. Tennessee was also one of Bidens Midnight relocation spots for his beloved illegals. The spikes more or less match that timeline.
Yes, but when deaths resulted from vaccines, as few as 50, the stuff was pulled out. Not in this case.