 The Epstein–Barr virus (EBV) is one of eight known herpesviruses.It displays host tropism for human B cells through the CD21-gp350/220 complex and is thought to be the cause of infectious mononucleosis, Burkitt's lymphoma, Hodgkin's disease, nasopharyngeal carcinoma, and lymphomas.EBV enters the body through oral transfer of saliva, and it is thought to infect more than 90% of the world's adult population.