[Spontaneous mononucleosis due to cytomegalovirus in otherwise healthy subjects. Prospective study of 28 cases (author's transl)].

Fever was a constant feature in 28 subjects with spontaneous mononucleosis due to cytomegalovirus and lasted 15 days or more in almost all cases (26/28). Blood mononucleosis and biochemical hepatic disorders were virtually always present but appeared later, so that the fever was initially thought to be "isolated". Splenomegaly was found in 39.