COVID 19 vaccine trials appear to have caused some confusion. Hopefully, this article might help clear things up a bit. People genuinely appear to believe that the COVID 19 vaccines have undergone clinical trials and have been proven to be both safe and effective. That belief is simply wrong.
The main point is this. If you decide to have Pfizer and BioNTechs experimental mRNA-based BNT162b2 (BNT) vaccine, or any other claimed COVID 19 vaccine for that matter, you are a test subject in a drug trial.