We are never going to get rid of this virus unless we just open everything back up. No mask, no distancing, and the rest of the bull shit. Lock-down didn’t really work. Just delayed. The best we can hope for is medicine to soften the pain and a vaccine.
Also those who have HAD the flu will have SOME immunity stored up. Our bodies DO that.
I had the ASIAN flu a LONG, long time ago. It almost killed me. But, I haven't had the flu (or a cold) since then. And I have steadfastly refused to get ANY shots.