Quadrivalent Human Papillomavirus Vaccine and the Risk of Venous Thromboembolism

Abstract

A potential association between quadrivalent human papillomavirus (HPV) vaccination and venous thromboembolism (VTE) has been reported in 2 postlicensure safety studies.1,2 An analysis of the Vaccine Adverse Event Reporting System database found disproportionately high reporting of VTE following vaccination,1 and a study using the Vaccine Safety Datalink reported a doubling of VTE risk.2