> The thing is, vaccines that haven't been through phase 2 trials can potentially make a pandemic worse. That's why you have to wait for them to resolve.
You can do challenge trials. Especially if you're going to let the virus spread through the population anyway.
Isn't a challenge trial really just another way of doing a phase 2 trial?
Whether you let it run through the population anyway really doesn't matter though. If you push the untested vaccine out to the population, you might turn a manageable problem into an unmanageable problem.
You can do challenge trials. Especially if you're going to let the virus spread through the population anyway.