Infectious mononucleosis has been recognized as a unique disease for more than 100 years and its cause, Epstein-Barr virus (EBV), was discovered more than 50 years ago. Yet, there is no licensed vaccine and no clear-cut effective treatment for infections due to EBV. This webinar will explain why. We will cover: the clinical findings and laboratory tests for diagnosing and staging primary EBV infection; the mechanisms EBV uses to induce cancer and autoimmune diseases, especially multiple sclerosis; research approaches to prevention of EBV infection. Essentially all of us acquire EBV during our lifetime. Is it better to get it sooner or later? What do you think?