In Kawasaki disease (KD), a vasculitis of unknown etiology, the most serious complication is the development of coronary artery aneurysm (CAA). To date, the exact pathomechanism of KD is unknown. Both environmental and genetic factors seem to be associated with the development of the disease. | Breastfeeding and vitamin D supplementation reduce the risk of Kawasaki disease in a German populationbased case-control study