Purely anecdotal, but I witnessed a person starting to experience a severe cognitive decline right after the two doses of the Shingles Vaccine. It can surely be a coincidence, but I was very surprised when I read about this study.
This anecdote is just that - a one off. We can use experiments, and papers to learn more, and should.
This anecdote is just that - a one off. We can use experiments, and papers to learn more, and should.