Association between pap abnormalities and HPV infection in participants in HPV vaccine clinical trials.

5530 Background: Few studies have reported the burden of Pap abnormalities associated with the specific HPV types targeted by HPV vaccines. The purpose of this analysis is to estimate prevalence of HPV anogenital infection, by baseline Pap results, in participants of 3 worldwide trials of the quadrivalent HPV vaccine (placebo and vaccine groups, FUTURE I, II, III), and to estimate incidence of Pap abnormalities by HPV infection status at...