It seems like the vax every 6 months is a worst-ish case scenario (worst case being, some mutation is like 100% vax resistant, no one can figure it out, and a lot more people die). Well, one is also supposed to get a dental cleaning every 6 months. The nice thing about the vax is, jab takes 2 seconds and no one bugs you about flossing. I don't see why this would be such a chore.