You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is BK virus infection - True statement is: and explain in detail?
Ans: (a) Causes nephropathy in transplant patientsRef: Harrison, 19th editionBK VirusBK virus is a non-enveloped double-strand DNA virus which belongs to family polyoma viridae.Primary BKV infection occurs by the upper respiratory route until age 10 without any obvious symptoms.80% of the population is infected by BKV, and approximately 50% of healthy native kidneys contain latent BKV.After renal transplantation, 35-60% of patients have BKV viruria, 5-30% of patients have BKV viremia.The prevalence of BKV nephropathy is about 10% of renal transplant patients.Progressive multifocal leukoencephalopathy is caused by JC virus (belongs to polyoma viridae).