Shingles

LeAnn

My dad (63 yrs old) got the chicken pox when he was little and ended up getting shingles for the first time last year. After he got over it he got the shot for it. Now he says he's starting to itch again (about the same time as when he got shingles last year).

My question is, once you get the shot do you have to get it again or are you safe after getting it once?