Pfizer knew the whole time.

Before getting emergency use authorization (EUA), Pfizer had enough data available to show a 3.7x increase in cardiac death for recipients of the covid vaccine. Instead, they modified the date of deaths for the vaccinated group by +18 days. This modification was not applied equally to the unvaccinated group.

After receiving EUA, Pfizer changed the date of death back to the actual date.

Furthermore, they also unblinded the participants and encouraged the unvaccinated group to take the shot.

This is criminal.

Heres a quote from the linked study:

Most alarming, we found evidence of an over 3.7-fold increase in number of deaths due to cardiovascular events in BNT162b2 vaccinated subjects that Pfizer/BioNTech did not report. Had this information been known at critical time points, it might have been sufficient to question the safety of the BNT162b2 mRNA vaccine, delay EUA approval of the vaccine, and alter recommendations made to the public during its worldwide roll-out.