There is also strong evidence that the shingles (herpes zoster) vaccine reduces dementia risk: https://arstechnica.com/health/2026/02/could-a-vaccine-prevent-d

There is also strong evidence that the shingles (herpes zoster) vaccine reduces dementia risk: https://arstechnica.com/health/2026/02/could-a-vaccine-prevent-dementia-shingles-shot-data-only-getting-stronger/ https://arstechnica.com/health/2026/02/could-a-vaccine-preve... Herpes simplex also increases Alzheimer's risk: https://hn.algolia.com/?query=Herpes https://hn.algolia.com/?query=Herpes But there is currently no vaccine for it.