In a recent report in "Cell Host & Microbe," data from Finland sheds light on the real-world implications of vaccinating girls and boys against human papillomaviruses (HPV). The study, led by Dr. Ville N. Pimenoff from the Karolinska Institut in Stockholm, explores the dynamics of HPV variants in 33 Finnish cities over time, considering scenarios where both genders, only girls, or no one was vaccinated.