“…Its recognition and management should become familiar to all concerned with the care of sick children" (Berenberg and Kevy, 1958). This condition was clearly defined and distinguished from laryngotracheitis, diphtheritic or presumptively virus croup, and other acute respiratory tract infections by Sinclair (1941), Alexander, Ellis, and Leidy (1942), Du Bois and Aldrich (1943), Miller (1948), and Rabe (1948) on the basis of their experience in different parts of the U.S.A.; but even in that country as recently as 1958 Berenberg and Kevy had to report that only one of their 42 cases was correctly diagnosed before reaching hospital. The condition occurs mainly in children aged 2 to 7 years, but sometimes also in infants, older children, or even adults.…”