“…Past investigation of the viral aetiology of the disease in North America showed association with parainfluenza viruses of types 1, 2, and 3 (Chanock, 1956;Chanock et al 1958; Beale, McLeod, Stackiw & Rhodes, 1958;Cook et al 1959). Other viruses (influenza A and B; adenovirus types 1, 2, 3, 5 and 7; coxsackievirus A9 and echoviruses 10 and 14) were associated with the syndrome in Melbourne, Australia (Forbes, 1961).…”