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  "path": "/news/2026-06-bcg-vaccine-rewire-brain-immunity.html",
  "publishedAt": "2026-07-02T05:00:06.000Z",
  "site": "https://medicalxpress.com",
  "textContent": "New research led by Mass General Brigham investigators suggests that the Bacillus Calmette-Guérin (BCG) vaccine—which is delivered through the skin to prevent tuberculosis—may remodel the human brain's immune environment, offering a potential biological explanation for previously observed associations between BCG vaccination and lower Alzheimer's disease risk. Findings are published in Communications Medicine.",
  "title": "BCG vaccine may rewire brain immunity, shift Alzheimer's markers over 12 months"
}