They referenced that study a couple of days ago in a briefing.
Regarding the vaccine, how are we supposed to know? You'd have to be virologists and follow their papers and keep up to date with that research to know. Dr Fauci was quizzed by the US senate and he's quite a reserved and experienced chap and he said of the Moderna vaccine that it's possible it might be available in the Autumn/Winter.
There's some potentially very important discussion going on about challenge vaccine tests where instead of waiting for the trial participants to get infected, you deliberately infect them and see if the vaccine works. I was hoping that one of the senators would ask Dr Fauci or the other witnesses about this but no one did. That has the potential to speed development up a lot.
It just drags on and on although if you stand back and look at it the first wave of infection is passing now in most countries. It's on its way down. The question is how far does it fall and can it be eliminated. I doubt it can entirely. It will be in some corner of the world and then it will come back again and that's the fear. Most countries have no immunity to speak of and it remains to be seen if testing strategies can protect populations the 2nd time around. It's really difficult to know how this is going to unfold.