Updated clinical practice guidelines for human papillomavirus vaccination: the Korean Society of Gynecologic Oncology recommendations.

The Korean Society of Gynecologic Oncology (KSGO) first developed clinical guidelines for the appropriate administration of human papillomavirus (HPV) vaccines tailored to the Korean context in 2016. In 2019, additional guidelines were introduced following the development of the nonavalent HPV vaccine. The 2021 revision included recommendations for vaccination in middle-aged women and men, as well as the potential benefits of vaccination following conization. In this latest revision, the guidelines focus on the necessity of HPV vaccination in middle-aged men, the Society's position on the single-dose schedule recently recommended by the World Health Organization to expand global vaccine coverage, recommendations regarding additional 9-valent vaccination for those previously vaccinated with bivalent or quadrivalent vaccines, and updated scientific evidence supporting the two-dose schedule for adolescents aged 9 to 14 years.