Epidemiologic study of Kawasaki disease in 6 months old and younger infants

Purpose : The aim of this study was to investigate the epidemiologic status of Kawasaki disease (KD) in infants ≤6 months of age. Methods : For the epidemiologic study of KD in Korea, data from 22,674 KD patients were collected from 1997 to 2005 on a 3-year basis by a retrospective survey. From this survey, data of 1,739 KD patients ≤6 months of age were analyzed and compared with those of KD patients >6 months of age. Results : A total of 1,739 patients ≤6 months of age, including 1,088 males and 651 females, represented 7.7% of total KD patients. These subjects included 22 patients aged 6 months old with data from 1,739 KD patients ≤6 months old showed significantly higher incidences of CA abnormalities and CA aneurysms in the younger patients.