alt Hacker NewsWe vaccinate for many of those already. The vast majority of seniors have the shingles virus already. Only a small percentage would likely have dementia not linked to another likely cause. Just as HPV only causes cancer in some individuals.
It wouldn't surprise me if it turns out all these tie back to immune dysregulation and are just triggered by different viruses in different people.
For Multiple Sclerosis multiple studies have shown it is strongly correlated with an EBV infection and only an EBV infection. After the infection it just becomes a genetic lottery with a really shitty prize.