“…Moreover, EBV-antibodies are not found in all patients with HD, and some studies have shown similar proportion of past EBV infection in patients with H D as compared to appropriate controls (Goldman and Aisenberg, 1970;Henle and Henle, 1973;Langenhuysen et al, 1974;Hesse et al, 1977;Lange et al, 1978). A few cases of IM in patients with H D have also been reported (Kenis et at., 1958;Langenhuysen, 1976;Davidson and Lessels, 1977). However, H D may be a heterogenous disease, and if EBV plays a role in the aetiology of the disease, it can obviously be of importance only in a proportion of the patients with HD.…”