Vaccines are protected by law in the US and it is impossible to sue for damages. This allows manufacturers to release drugs without studies to prove efficacy or safety.
If the user becomes permanently damaged they have the secret vaccine court that may or may not provide some relief. The outcome of these cases is not common knowledge and the use of these drugs do not cease.
People are dying from vaccines and you don't know it. Meanwhile government mandates are forcing vaccinations while a few are profiting.