Zoster Vaccination and Dementia: Interpreting the Signal and Testing the Mechanisms - PubMed
3 hours ago
- #dementia risk
- #herpes zoster vaccine
- #immune modulation
- Observational studies suggest a link between herpes zoster vaccination and reduced dementia diagnoses.
- Quasi-experimental methods, like using birthdate eligibility thresholds, support a causal relationship but do not explain the underlying mechanisms.
- Proposed pathways include reduced viral reactivation burden, vaccine-induced immune modulation, and neurovascular or neuroinflammatory changes as intermediate factors.
- Future research should focus on stronger causal designs, pathway-specific analyses, and studies with longitudinal immune and biomarker data.