OCCASIONALLY, during informal discussions, physicians will mention having treated patients for recurrences of mononucleosis. On the other hand, the infrequency of case reports, some unfortunately lacking adequate confirmation, attests to the rarity of authentic recurrences. As a rule the author has established the diagnosis of one attack with indisputable hematologie and serologic data included in his report. The documentation of other attacks, however, often lacks conviction, the patient frequently having been treated by other physicians. A case in point is that of Paterson and Pinninger, who conclude as follows: "This patient had three attacks of infectious mononucleosis over seven years. Unfortunately figures are not available for the blood counts and Paul-Bunnell tests of the first two attacks, but the patient is a reliable and intelligent witness and the Royal Air Force authorities have confirmed that the second attack was genuine."
In practice, the question of recurrent mononucleosis is apt to