Hi, there are ongoing studies on how long the effectiveness of the HPV vaccine lasts. Recently this 2017 study titled HPV vaccine is effective, safe 10 years after it’s given, showed that at 10 years the vaccine was still effective in providing immunity. www.sciencedaily.com/releases/2017/11/171129131400.htm
I checked with one of our resident physicians and currently there are no clinical recommendations to revaccinate individuals.
Let us know if this does not answer your question or if you have any more questions or concerns. Health Nurse