1998 Volume 72 Issue 9 Pages 939-944
While it is well known that most Cytomegalovirus (CMV) infections can occur in childhood without any clinical manifestation, this virus is an important cause of serious illness in infants and in immunocompromised individuals, including patients receiving immunosuppressive drugs, organ and bone marrow transplant recipients and patients with acquired immune deficiency syndrome. However, CMV rarely occurs as a spontaneous primary infection in immunocompetent adults, although it can cause several clinical symptoms and mononucleosis in such patients. We described our experience with a patient who was a 23-year-old Japanese man, given a diagnosis of CMV mononucleosis, and in whom lymphocyte subpopulations and neutrophil function were investigated. Some noteworthy points of the case are reported.