disease has primary infectious agent infectious disease polyomavirus infectious disease UMLS:C0949804 MEDGEN:215447 Infections with polyomavirus, which are often cultured from the urine of kidney transplant patients. Excretion of bk virus is associated with ureteral strictures and cystitis, and that of jc virus with progressive multifocal leukoencephalopathy (leukoencephalopathy, progressive multifocal). MESH:D027601 MONDO:0005927 EFO:0007451 primary viral infectious disease Polyomavirus sp.