CRP and infection: In addition, since infectious agents and immune regulatory dysfunction in the body may be the causative factors of KD, stress-related inflammatory markers occurring after exogenous infections, such as the erythrocyte sedimentation rate (ESR), C-reactive protein (CRP) level, white blood cell (WBC) count, and platelet (PLT) count, are thought to have the ability to predict CALs in people with KD, and cardiac markers including N-terminal pro-B-type natriuretic peptide and markers of cardiomyocyte damage are also considered useful for predicting CALs.