Preventive HPV vaccines work. Now a new discovery could also help eliminate existing cancers too
A newly identified immune system ‘roadblock’ may explain why HPV vaccines given after infection struggle. 25 August 2025 by Linda Geddes A health worker administers the HPV vaccine to a girl in Zambia. Credit: Gavi/2023/Peter Caton The vaccines that prevent HPV-related cancers are a medical success story. But once the virus has taken hold, they…
