Does ACIP recommend revaccination with 9vHPV for patients who previously received a 3-dose series of 2vHPV or 4vHPV?

ACIP has not recommended routine revaccination with 9vHPV for persons who have completed a 3-dose series of another HPV vaccine. There are data that indicate revaccination with 9vHPV after a 3-dose series of 4vHPV is safe. Clinicians should decide if the benefit of immunity against 5 additional oncogenic strains of HPV (which cause 12% of HPV-attributable cancers) is justified for their patients.