> Vaccines dramatically reduce the danger of the virus Obviously, if you take the same COVID-naive person and subject this person to a virus both in vaccinated

> Vaccines dramatically reduce the danger of the virus Obviously, if you take the same COVID-naive person and subject this person to a virus both in vaccinated and unvaccinated state (repeatedly), you can derive a conclusion. This is a simple and easy to understand impossible experiment. How your conclusion was derived? (I'm not arguing with it, I just don't understand the method.)