After four days, she presented the same symptoms, and a biological assessment was done that confirmed the clinical diagnosis of flu: her white blood cell count was 9540 cells/mm3 with 69.7% neutrophils, hemoglobin at 11 g/dL, platelet count at 288,000/mm3, C-reactive protein (CRP) was 2.3 mg/L. The gene discussed is CRP; the disease is influenza.