Lancet March 2026 The effectiveness of HPV vaccination against invasive cervical cancer and related precancerous lesions: a multinational target trial emulation study

By analyzing extensive healthcare data from the United Kingdom, Spain, and Norway, this study evaluates how well HPV vaccination programs protect young women against serious cervical disease over a fifteen-year period. Researchers utilized a target trial emulation to compare health outcomes between vaccinated and unvaccinated individuals, specifically focusing on the prevention of high-grade precancerous lesions and surgical interventions. The findings demonstrate a significant reduction in these risks, confirming that the vaccines remain a highly effective preventative measure in real-world clinical settings. While there were too few cases to draw definitive conclusions about invasive cancer, the results strongly reinforce the long-term public health benefits of early immunization.