Genus: Betapolyomavirus
Family: Polyomaviridae
Genus: Betapolyomavirus
Distinguishing features
The best-studied human polyomaviruses, BK polyomavirus (BKPyV) and JC polyomavirus (JCPyV) belong to this genus and are associated with nephropathy and progressive multifocal leukoencephalopathy, respectively.
Virion
See discussion under family description.