Shingles vaccine may slow progression of dementia, new study suggests

The shingles vaccine not only offers protection against the painful viral infection, but a new study suggests that the two-dose shot also may slow the progression of dementia.

​ The shingles vaccine not only offers protection against the painful viral infection, but a new study suggests that the two-dose shot also may slow the progression of dementia. Read More Breaking News, Latest News and Videos | CNN