Alberto Ascherio

Professor of Epidemiology and Nutrition at the TH Chan School of Public Health, Harvard University and Professor of Medicine at Harvard Medical School 

This is an excellent quality study that offers evidence that the herpes zoster vaccine reduces the risk of dementia, particularly in women. These are important findings that support the potential role of viral infections in Alzheimer's disease and other forms of dementia.

Without a doubt, the results of this study support the need to invest more in research into the potential of infectious agents as causes of neurodegenerative diseases.

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