ABSTRACT
SENV is a blood- borne, circular ss DNA virus and possessing nine genotypes [A to I]. Among nine genotypes, SENV-D and SENV-H genotypes have the strong link with patients with non [A-E] hepatitis infections .Recently, the identification of SEN virus [SENV] as a possible etiologic agent of parenteral transmission hepatitis let to the study of the prevalence of such agent. This study compared SENV prevalence and its two important genotypes [D and H] which might be pathogenic in high risk subjects including blood diseased patients and hemodialysis patients and low risk subjects as healthy blood donors. This study included 75 multitransfused patients, 60 of them were hemodialysis and the remaining were blood diseased including hemophilics, anemics and leukemics. The study included also 25 healthy blood donors as a control They were received consecutively at Department of Internal Medicine, Assiut University Hospital. The sera were separated and SENV DNA was detected by polymerase chain reaction. The results showed a higher prevalence of SENV infection in patients group than blood donors [46.7% versus 20%].No significant relation was found between SENV infection and age, duration of hemodialysis or liver enzymes. However, there was significant difference between SENV positive and negative patients as regards gender and number of blood transfusions. SENV is commonly present in blood diseased and hemodialysis patients attended to Assiut University Hospitals as well as in blood donors at variable rates. SENV infection has been found in only 20% of blood donors but in 46.7% of patients. The results also indicated that other possible routes of SENV infection other than blood transfusion may be included. Its pathogenic role in causing hepatitis is not documented, so far it can be considered as simple guest till further studies have been done