Transmission It is not known how this virus is transmitted. It is known, however, that the virus is spread from person to person, and not from an animal source. It has been suggested that this virus may be transmitted through respiratory fluids or urine, since infected individuals periodically excrete virus in the urine. A survey of 400 healthy blood donors was reported as showing that 82% were positive for IgG against<unk> . Risk factors In some renal transplant patients, the necessary use of immunosuppressive drugs has the side-effect of allowing the virus to replicate within the graft, a disease called<unk>  nephropathy. From 1–10% of renal transplant patients progress to<unk>  associated nephropathy <unk> AN) and up to 80% of these patients lose their grafts. The onset of nephritis can occur as early as several days post-transplant to as late as 5 years. It is also associated with ureteral stenosis and interstitial nephritis. In bone marrow transplant recipients it is notable as a cause for hemorrhagic cystitis.<unk>  viremia load > 185 000 copies/ml at the time of first positive<unk>  diagnosis - to be the strongest predictor for<unk> AN (97% specificity and 75% sensitivity). In addition the<unk>  peak viral loads in blood reaching 223 000 copies/ml at any time was found to be predictive for<unk> AN (91% specificity and 88% sensitivity) .
BK virus
Slow virus
Hendra virus
Sepik virus
Limestone Canyon virus
Yaba monkey tumor virus
Playa de Oro virus
Banna virus