Seems that the biggest risk is that this thing mutates fast enough for the previous immunity to be irrelevant after a few months, however not in enough amount to really care that much about it. It does sound like vaccinators are at least targeting the right thing, though I remain skeptical (with this amount of mutation) that any vaccine will ultimately be effective at anything other than waving a dead chicken regarding the stop of corona. That said, it's been being waved as the magical talisman that ends lockdowns, so government and the clerisy has more or less written themselves into a corner regarding the magic necessary to "go back to normal." Perhaps that's the reason the Russians were ultimately so fast to market.