It’s an ongoing and vexing public health problem: People once vigilant about vaccinating their children aren’t nearly as careful about protecting themselves as they age, even though diseases like influenza, pneumonia and shingles (a.k.a. herpes zoster) are particularly dangerous for older people.

http://www.nytimes.com/2016/12/02/health/shingles-vaccine.html?mabReward=CTM&recp=4&action=click&pgtype=Homepage®ion=CColumn&module=Recommendation&src=rechp&WT.nav=RecEngine