To add on this. I believe Alzheimer’s is a set of symptoms causes by different bacteria and viruses. Not a disease in itself. And not one single virus or bacteria. See also the recent found link between Alzheimer's and dental bacteria.
Or the link between Alzheimer’s and Lyme disease. Like this misdiagnosis:
https://www.cbsnews.com/news/kris-kristofferson-misdiagnosed...
And this:
>In Miklossy’s work, Borrelia burgdorferi—the species of spirochete that causes Lyme, was identified in 451 out of the 495 Alzheimer’s-riddled brains they examined. Yet, her work at the time was derived by other researchers and until recently, she had difficulty securing funding.
https://bigthink.com/philip-perry/could-a-pathogen-be-the-ca...