An annual flu shot seems to be protective not only against the flu but against Alzheimer’s disease–and possibly against the cognitive effects of CAA (Cerebral Amyloid Angiopathy). Here is a link to this research:https://www.webmd.com/vaccines/news/20220630/flu-vaccine-older-minds-sharp-study According to WebMD, “In a large study of vaccinated and unvaccinated adults ages 65 and older, those who received at least…