Impact of Baseline Covariates on the Immunogenicity of a Quadrivalent (Types 6, 11, 16, and 18) Human Papillomavirus Virus‐Like‐Particle Vaccine

Abstract
Background.The quadrivalent (types 6, 11, 16, and 18) human papillomavirus (HPV) L1 virus-like-particle vaccine was 95%–100% effective in preventing