What is "deltapapillomavirus"

Deltapapillomavirus is a genus of viruses, in the family Papillomaviridae. Ruminants serve as natural hosts. There are currently six species in this genus including the type species Deltapapillomavirus 1. Diseases associated with this genus include: warts (papillomas and fibropapillomas) of the skin and alimentary tract (rarely cancers of the alimentary tract and urinary bladder); possibly responsible for the skin tumour equine sarcoid in horses and donkeys.