I don't see how it's possible that anybody could test for the increased risk of dementia, especially in such a short space of time... very skeptical of that kind of claim.

I wouldn't rule it out without seeing these studied you refer to but yeah, highly skeptical.

Filters, vaccine money, more testing, might be good in higher income countries I suppose, if they feel the balance is right. But most places around the world would be hopeless in this regard. Even the UK printed so much money its inflation is at insane highs. printing more to pay for vaccines and filters in every building would throw us into destitution at this point... and we're supposed to be a 'rich' country lol.