Its called the Epstein-Barr virus EBV and an estimated 90 percent of us have it. When infection with EBV occurs during adolescence or young adulthood it causes infectious mononucleosis 35 to 50 of the time. 20 Point Quality Checklist For Buying Essential Oils Essential Oils Health Essential Oils Aromatherapy Yl Essential Oils Epstein-Barr Virus. How does one get epstein barr virus . The Epstein-Barr virus EBV is one of the most common infections in humans. Epstein-Barr virus like other viruses is a microscopic agent that can only survive and replicate by infecting a host. Chronic active Epstein-Barr virus infection CAEBV is a very rare complication of an Epstein Barr virus EBV infection. Epstein-Barr Virus Basics. In pregnant women with symptoms of a viral illness one or more EBV antibody tests may be ordered along with tests for cytomegalovirus CMV. Yvonne Barr found it in a Burkitt lymphoma cell line. Infectious mononucleosis is a clinical syndrome caused by Eps...