Epstein Barr Virus ??? Viruses associated with blood transfusion: Hepatitis C virus: Hepatitis G virus: Hepatitis B virus HIV type I HTLV Type Cytomegalovirus Parvovirus 13-19 HGV A recently discovered and identified non A-E hepatitis virus has been designated the name Hepatitis G virus (HGV) which is a member afflaviviridae HGV is distinct.from hepatitis C virus (HCV) and the newly discovered GBVA and GBV-B agents. The structure of the HGV genome resembles that of HCV. The structure of the HGV genome resembles that of HCV. HGV replicates in peripheral blood eels! while replication in liver cells has not been observed till date. It does nor appear to cause liver disease. Epidemiological data indicates that virus is prevalent throughout the world and has clearly resblished transmission modes which are: ? - Blood abd Blood products - Sexual transmission EBV can also be transmitted by blood transfusion. EBV as present in the transfused WBC. The leucocyte associated viruses are : ? CMV EBV HHV-8 (Human herpes virus type 8) HTLV-1 & HTLV-11 HIV We are not sure of the answer. Now we should look for the virus which is least commonly transmitted. There is confusion in this too because both EBV and Parvovirus are rare with transfusion. An impoant point All the viruses mentioned in the question are not routinely screened for blood transfusion. The America' Red cross performs laboratory tests for multiple infectious disease markers on every unit of donated blood. These tests includes: ? - Chagas disease - Hepatitis B virus (HBV) - Hepatitis C virus (HCV) - HIV (1,2) - HTLV-I - Syphilis - West nile virus (WNV)