@graydon @GreySkies @augieray

First, I've had 6 vaccinations, that chart only goes to 4. Second it says nothing about the degree to which vaccination reduces the likelihood of infection in public spaces.
Lastly, your statement regarding brain damage is highly suspect. The possibility certainly exists as is the case with cardiovascular issues, but certain damage?
I very much doubt you can find a quality study that makes such a definitive conclusion.
Air quality and high quality masks? Of course.