Alois Alzheimer, and many others up to the present time, have suggested Alzheimer’s disease (AD) has an infectious cause. The risk of AD is higher in close contacts of AD patients, and non-genetic relatives living in the household of an animal handler. AD prone mice given antibiotics for as short as one week had reduced risk for AD and developed far fewer protein clumps typical of dementia and AD. Infectious pathogens have been identified inside, under and around plaque. A…..