Further down in the article: >"In the past three decades, more than 100 papers have described correlations between the presence of HSV–1 and the risk of Alzhei

Further down in the article: >"In the past three decades, more than 100 papers have described correlations between the presence of HSV–1 and the risk of Alzheimer’s... Most recently, Ben Readhead and his colleagues at the Icahn School of Medicine at Mount Sinai showed that two herpes viruses, HHV–6A and HHV–7, were more common in the brains of Alzheimer’s patients than in those of healthy people." And the article continues to point out the links, though hedges as to whether it is a causal link or not in either direction.