Denmark's HPV Vaccination Program Nearly Eradicates Two Major Cancer-Causing Strains
Research published in Eurosurveillance shows that Denmark has virtually eliminated infections with the two most prevalent cancer-causing strains of human papillomavirus (HPV) since the vaccine's introduction in 2008. Analysis of cervical cell samples from Danish women aged 22-30 (2017-2024) revealed that HPV16/18 infection rates in vaccinated women plummeted from 15-17% to less than 1%. This demonstrates not only individual protection but also herd immunity, reducing overall HPV16/18 circulation. However, roughly one-third of screened women still had infections with high-risk HPV types not covered by the initial vaccine. This is expected to decrease as women vaccinated with the newer nine-valent vaccine reach screening age, potentially prompting a review of cervical cancer screening guidelines.