This is a tangent, but I wonder if people know that recent research indicates the shingles vaccine might help prevent dementia. Here is output from Google AI:

"A study published in Nature suggests that the shingles vaccine may reduce the risk of developing dementia. Specifically, the study found that people who received the shingles vaccine were 20% less likely to develop dementia of any type than those who did not. This protective effect was stronger in women than men. A study in JAMA also found that those eligible for the shingles vaccine were 38% less likely to die of dementia than those who were ineligible. "