Infection with Epstein-Barr virus.
D000914:Antibodies, Viral / Q000032:analysis; D003587:Cytomegalovirus / Q000276:immunology; D003586:Cytomegalovirus Infections / Q000175:diagnosis; D004854:Herpesvirus 4, Human / Q000276:immunology; D006801:Humans; D007244:Infectious Mononucleosis / Q000175:diagnosis*
D000914:Antibodies, Viral