RESUMEN
In 166 patients presented at the Liver Institute, University of Menofeya with acute virus hepatitis, routine liver function tests were performed. In addition, a wide scale serological study was performed. This includes detection of IgM antibody against cytomegalovirus and Ebstein-Barr virus and also detection of virus hepatitis markers [IgM antibody against hepatitis A, hepatitis B surface antigen and antibody, hepatitis B "e" antigen and antibody, hepatitis B core antibodies "IgM and IgG" and delta antibodies "IgM and IgG". Results showed that the incidence of delta hepatitis is 7% in delta co-infection and 15% in delta superinfection with no significant difference between males and females. Results of the present study confirm that delta virus is endemic in Egypt