Are you referring to the subjects injected with the experimental vaccine? A phase I trial's purpose is to see if the drug is safe for humans and get an idea of

Are you referring to the subjects injected with the experimental vaccine? A phase I trial's purpose is to see if the drug is safe for humans and get an idea of what the best dose is, not if it's effective. As to deliberately exposing people to the coronavirus, that's an ethical mess. The parent blog's author has another post that covers this as well [0]. tl;dr (the blog in general is a great resource though): * We're not at a point where we need to deliberately expose people, as there's enough people being exposed in their communities. * The normal standard for those deliberate tests also only recommend it if there's known effective for treatments for the diseases, which (obviously) there is not for COVID-19. Hell, we're still figuring out what exactly it's doing in the body. * As a sibling comment brings up, history is riddled with unethical medical experimentation. We don't want to repeat those mistakes. 0: https://blogs.sciencemag.org/pipeline/archives/2020/07/02/challenge-testing https://blogs.sciencemag.org/pipeline/archives/2020/07/02/ch...