And did you not read the purpose of the trial? I think we know that a placebo is safe already.
E.2 Objective of the trial
E.2.1
Main objective of the trial
To describe the safety and tolerability profiles of prophylactic BNT162 vaccines in healthy adults after single dose (SD; prime only) or prime/boost (P/B) immunization
E.2.2
Secondary objectives of the trial
To describe the immune response in healthy adults after SD or P/B immunization measured by a functional antibody titer, e.g., virus neutralization assay or an equivalent assay available by the time of trial conduct.
