- KD patients, those diagnosed on or after day 9 of illness (the first illness day was defined as the day of fever onset), those with coronary artery abnormalities before enrolment, those who were afebrile before enrolment, those who had received steroids (oral, intravenous, intramuscular, or subcutaneous) in the 30 days before the study or intravenous immunoglobulin in the previous 180 days, those with concomitant severe medical disorders (eg, immunodeficiency, chromosomal anomalies, congenital heart diseases, metabolic diseases, nephritis, collagen diseases), and those with suspected infectious disease, including sepsis, septic meningitis, peritonitis, bacterial pneumonia, varicella, and influenza.