Can the HPV Vaccine Prevent Precancerous Lesions in Girls and Women?
Synopsis
Key Takeaways
New Delhi, Dec 20 (NationPress) The Human papillomavirus (HPV) vaccine, widely recognized for its role in preventing cervical cancer, also plays a crucial part in protecting against precancerous lesions of the vulva and vagina among girls and women, as demonstrated by a recent study.
The research, featured in JAMA Oncology, revealed that women who received at least one dose of the quadrivalent HPV vaccine experienced a 37% reduction in the incidence of high-grade vulvovaginal lesions compared to those who were unvaccinated.
Notably, the reduction was especially significant among women vaccinated between the ages of 10 to 16, showing a 57% decrease in rates of vaginal or vulvar precancers compared to their unvaccinated counterparts.
“These findings underline the essential importance of early initiation of HPV vaccination. The increased risk reduction observed in younger women may stem from their lower likelihood of prior HPV exposure before vaccination,” stated researchers from the Karolinska Institutet in Sweden.
The study involved a cohort of 778,943 women born between 1985 and 1998, residing in Sweden from 2006 to 2022.
During the follow-up period, vaccinated women had 98 cases of high-grade vulvovaginal lesions, while unvaccinated women had 547 cases.
When comparing the two groups, the fully adjusted incidence rate ratio of high-grade vulvovaginal lesions was 0.63 in vaccinated women.
Vulvar and vaginal lesions encompass a range of skin changes (including bumps, sores, cysts, and discoloration) around the genital area, which can be benign (such as infections and cysts) or precancerous (VIN) and cancerous. Symptoms may include itching, pain, burning sensations, or discharge.
Identifying vulvar and vaginal lesions at their precancerous stages is vital, as early detection significantly increases the chances of successful treatment.
HPV stands as the most prevalent sexually transmitted infection worldwide, responsible for over 690,000 new cancer cases annually. It is the leading cause of cervical cancer and contributes to various other genital and head and neck cancers in both genders.
Moreover, a recent study indicated that the HPV vaccine could offer substantial herd immunity effects, providing protection even to young women who did not receive the vaccine.