I read a story about one control group - they all kept in touch in a chatroom. Once they realized they were the control group at the end of the trial, they started raising hell to get the vaccine from Pfitzer. Some obtained the vaccine on their own at the first roll-out. So it would be unfair to say Pfitzer broke protocol when it was the group itself that demanded the protection the vaccine afforded
So it would be unfair to say Pfitzer broke protocol when it was the group itself that demanded the protection the vaccine afforded
End result is the same. There is no control group, so safety can’t be proved.