CRP and nutritional deficiency disease: The second patient was an 8-month-old infant with a diagnosis of neuroblastoma, ANC = 170/μL (cefotaxime administered at admission, blood transfusion was necessary, CRP = 30.0 mg/dl), in whom a norovirus infection was detected, a 14-day rifaximin treatment was administered, and the patient exhibited severe malnutrition (Cole index was 62.4% at BMI = 10.74).