Papovavirus

Papovaviricetes a class of viruses composed of papillomaviruses and polyomaviruses.[1] They are mainly associated with various neoplasms in mammals.[2] Papillomaviruses and polyomaviruses were formerly classified as the family Papovaviridae but was split into the families Papillomaviridae and Polyomaviridae.[3] The former family was later reinstated as a class.[4]

Papovavirus
Virus classification
Group:
Group I (dsDNA)
Kingdom:
Shotokuvirae
Phylum:
Cossaviricota
Class:
Papovaviricetes
Orders

Sepolyvirales
Zurhausenvirales

The name derives from three abbreviations: Pa for papillomavirus, Po for polyomavirus, and Va for "vacuolating" (simian vacuolating virus 40 or SV40, which is now known to be part of the polyomavirus genus).

Papovaviruses are DNA viruses containing double-stranded DNA, are icosahedral in shape, and do not have a lipoprotein envelope.

They are commonly found in humans and other species, mostly mammals. The one that most often causes disease in humans is the human papillomavirus, however clinically significant members include JC virus (causative agent of progressive multifocal leukoencephalopathy) and BK virus (causative agent of hemorrhagic cystitis in immunocompromised patients).

References
  1. https://talk.ictvonline.org/taxonomy/
  2. Page 23a in: Merriam-Webster's collegiate dictionary. Springfield, Mass: Merriam-Webster, Inc. 2003. ISBN 0-87779-809-5.
  3. Polyomaviridae 2004 Stanford University. Referring to the Seventh Report of the International Committee on Taxonomy of Viruses
  4. https://talk.ictvonline.org/taxonomy/p/taxonomy-history?taxnode_id=201907178
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