“…Although the disease tends to be less severe in older children than in newborn infants, epidemics have been described in older children which have carried a high mortality (Stoeber, 1952;Choremis, Cassimos, Nihoyannopoulos, Mavrou and Haka, 1956;Freundlich, Berkowitz, Elkon and Wilder, 1958). The present paper shows that at least a proportion of the cases of myocarditis in older children is caused by Coxsackie group B viruses.…”