How long can HPV vaccine prevent?

Persistent infection of high-risk HPV virus may cause precancerous lesions of the cervix, even cervical cancer, and low-risk HPV infection may cause genital warts. HPV vaccine injection can prevent most cervical cancer and genital warts. HPV vaccine has been on the market for ten years at this stage. Vaccine titer testing for people ten years after vaccination has been carried out and it has been found that the vaccine is still protective. According to the mathematical model of titer decay, it is speculated that hpv vaccine can prevent 20 to 50 years, basically playing a very good protective role before menopause. Therefore, in general, hpv vaccine injection once a person's life is enough, but it is necessary to remind that sexually active women, even if injected with hpv vaccine, should also regularly carry out cervical cancer screening.