50% fully vaxed will get us to herd immunity. That means that once we reach 50% fully vaxed (if not a little before), COVID numbers (cases) will go down and that there will never be another wave.
Here's the "Cut to the Chase" podcast with Gregg Goldfarb that explains why: https://open.spotify.com/episode/7wvm2BcmRywQecatVOqJq7?si=k3Zw1wI0S2aheaZWnvZCIQ