We are in a race between the vaccine production and distribution on the one hand and the arrival of the more contagious varieties from elsewhere on the planet on the other.
May the good guys win.
Moderna is working on a booster shot for the South African variant which is troubling because it defeats the current vaccines we have right now. So my guess is if you take a shot now, you will have to take the updated one 10-12 months later. Kind of like annual flu shots.