If these first trials succeed, yes, we might get a vaccine mass-produced fast. But you're not looking at the downside risk: if these trials fail, and the next t

If these first trials succeed, yes, we might get a vaccine mass-produced fast. But you're not looking at the downside risk: if these trials fail, and the next trials fail. This is research; by definition we don't know what will happen. It could turn out to be really hard to make a vaccine for this particular virus. In that case, even with well-funded efforts trying everything, it could take many years.