Tens of millions revived the vaccine during this period. This is not the 30,000 trial, this was the big rollout. Worldwide tens of millions received the vaccine during this period. “Cumulative Analysis of Post-Authorization Adverse Event Records Reports”
I see. So it was what they would normally call a “post marketing study” or Phase IV study which the FDA almost always mandates for any new drug. In that case, yes, millions of participants.