Excess Cancer Cases and Medical Costs Due to Suboptimal Human Papillomavirus Vaccination Coverage in California.

Background: Human papillomavirus (HPV) vaccination coverage continues to be at low to moderate levels throughout the United States. HPV infection is linked to multiple types of cancers resulting in high economic and health burden. We aimed to estimate the excess number of cancer cases and associated medical costs due to current HPV vaccination coverage for a 20-year-old birth cohort in California.