thr vaccine study is a pretty clear (partial) causal link. there is a jump discontinuity in all causes dementia cases based on week of birth, where the jump occ

thr vaccine study is a pretty clear (partial) causal link. there is a jump discontinuity in all causes dementia cases based on week of birth, where the jump occurs at the NHS policy cutoff week (if you are older than this week you are ineligible fof the vaccine). It's likely partial because vaccines only confer resistance against one subset of virii and there may be nonviral Alzheimer's too. in any case causality is not really in question in that study