Note
Genital epithelial tumors of Atlantic bottlenose dolphins (Tursiops truncatus [Tt]) and Burmeister’s porpoises (Phocoena spinipinnis) were formerly shown to be associated with papillomavirus (PV) infection. Papillomaviruses are highly prevalent viruses involved in the development of various tumor types in a wide range of animals, and so-called high-risk PVs contribute to malignant progression. In marine mammals, the incidence and prevalence of PV infection, transmission pathways, and persistence of infection are largely unknown.