Hope is not an ideal thing to hang your hat on, but sometimes it's the best we got. I guess the other thing that I'm hopeful for that isn't discussed here is that as some herd immunity builds up that the average viral load to which a naive person is exposed will decrease. This is bound to lessen severity of symptoms on average. Again, hope isn't much, but I think there's a good theoretical basis to believe that could be true.Because doctors managed to stop the SARS outbreak after about 8,000 cases, there’s never been a chance for anyone to get infected a second time, but those T cells could be a sign of ongoing immunity. A later vaccine study in mice found that memory T cells protected the animals from the worst effects when scientists tried infecting them again with SARS.