The underlying data is available [0] As I understand it, Phase 2 of the trials was when they determined this by looking at the immune system response. Phase 3 t

The underlying data is available [0] As I understand it, Phase 2 of the trials was when they determined this by looking at the immune system response. Phase 3 then looked at actual disease outcomes. (Phase 1 was safety/side effects) It's very important to note that Phase 3 was about COVID19 disease and less about Sars-Cov2 infection. They do have some infection information, but the vaccine is licensed to prevent disease, not infection. If there was more time, there would be more answers, but you can only run so many trials when people are dying from a pandemic. 0. https://www.fda.gov/media/144434/download https://www.fda.gov/media/144434/download page 53 * Take all of the above with a huge grain of salt, I am not a doctor, immunologist, public health professional, epidemiologist, etc