ICI-VPH: Impact of HPV Immunisation Schedules Against HPV

ICI-VPH: Impact Des Calendriers d'Immunisation Contre Les HPV

This randomised clinical trial aims to determine whether an immunization schedule comprising two doses of Gardasil administered six months apart is non-inferior to a schedule comprising three doses administered at 0, 6 and 60 months for the prevention of HPV-16 and HPV-18 infections that persist for at least six months, up to ten years after the initial vaccination.

The study hypothesis is that the two-dose schedule would offer similar protection as that of a three-dose schedule against persistent HPV-16/18 infections.

Inclusion Criteria:

• Having received two doses of Gardasil in 2008-2009, 2009-2010,2010-2011 or 2011-2012 according to 0, 6 months Schedule (between 4 and 12 months)
• Resident of the regions chosen for the study

Exclusion Criteria:

• Being considered immunosuppressed at time of vaccination (9-10 years-old) or at recruitment visit
• Being pregnant at recruitment visit