I took shingles vaccine, and after 2 weeks, the shigles come back, but less pain, that normal? doctor told me no more after the shot, please why ?

Shingles Vaccine: In a clinical trial involving thousands of adults 60 years old or older, zostavax reduced the risk of shingles by about half (51%) and the risk of post-herpetic neuralgia by 67%. While the vaccine was most effective in people 60-69 years old it also provided some protection for older groups. Research suggests that the shingles vaccine is effective for at least six years, but may last much longer.