What you are describing with the 50% receiving a placebo is a blind study that is used for a different purpose.
In this case they only want to know if it is effective or not and to what percentage it is efficacious.
So they would use known infected individuals and introduce the vaccine or healthy people then give them the pathogen and the vaccine. Right now they say over 90% effective so it resolved the ailment in over 9 of 10 participants.
There were some participants that died after receiving the vaccine, I am not sure where they would fall in the numbers, but then they don’t want to tell you about them.
|