BCG vaccine may rewire brain immunity, shift Alzheimer's markers over… | HappeningNow.news

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BCG vaccine may rewire brain immunity, shift Alzheimer's markers over 12 months

New research led by Mass General Brigham investigators suggests that the Bacillus Calmette-Guérin (BCG) vaccine—which is delivered throug…

Source Medical Xpress Story Brief Updated July 2, 2026
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Story Brief

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 ri

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