The effect of shingles vaccination at different stages of the dementia disease course https://www.cell.com/cell/fulltext/S0092-8674(25)01256-5 The findings suggest that live-attenuated HZ vaccination prevents or delays mild cognitive impairment and dementia and slows the disease course among those already living with dementia https://www.youtube.com/watch?v=naT5JJtthVk