Polypeptides, compositions, and methods for treatment of papillomavirus (PV) infections including a papillomavirus (PV) minor capsid (L2) polypeptide fragment and a cholera toxin B subunit (CTB) polypeptide are described. Polypeptides and compositions disclosed herein can be administered to the mucosa of a subject, resulting in unexpectedly beneficial production of cross-neutralizing antibodies.