Interesting, but that's a big 'if':
“They support the hypothesis that vaccination against shingles might prevent dementia,” Taquet said. “If validated in clinical trials, these findings could have significant implications for older adults, health services and public health.”
https://www.ft.com/content/d0aaf521-8f24-444d-86b7-c260ae7909a6
Here's the original ref
"Specifically, receiving the recombinant vaccine is associated with a 17% increase in diagnosis-free time, translating into 164 additional days lived without a diagnosis of dementia in those subsequently affected."
@cyrilpedia def interesting, need to read more over weekend