Quote:
Originally Posted by tuccillo
People continue to get this wrong. The "95%" number is the reported efficacy of the Pfizer/BioNtech and Moderna vaccines during their Phase 3 trials. This number is the ratio of the number of positive cases for the control group and the number of positive cases for the test group. You will need to read the Phase 3 trial reports for the exact definition of a "positive" case as they differ between the Pfizer/BioNTech and Moderna Phase 3 trials. The J&J Phase 3 trial reported a lower efficacy number but their trial population and time of their trial was significantly different than the Pfizer/BioNTech and Moderna Phase 3 trials so direct comparisons are not valid.
The correct interpretation of the "95%" number is that your probability of contracting the virus if you are vaccinated and exposed to the virus is reduced by a factor of 20x when compared to someone who is not vaccinated and is exposed to the virus. There is no 5% who are going to get COVID even if they are vaccinated. Another results of the Phase 3 trials is that your probability of hospitalization and death is very remote if you are vaccinated.
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Thank you, you are correct. But most people
still won't understand that