If a person does not do anything it might require a couple of years to generate immunity to human papilloma virus. If one follows the writer's recommendations, it requires only a few months to generate immunity to HPV. The longer one has HPV, the longer it could cause cervical damage. So it is best to establish resistance so as to remove HPV virus as quickly as reasonable.
https://www.openlearning.com/u/hession-qadcr0/blog/20ThingsYouShouldKnowAboutHpvCanCause/