Of those 16 virally infected patients with clinical signs of bacterial pneumonia (lobar pneumonia detected by chest radiograph or pneumonia with CRP higher than 200 mg/L), 94% (15/16) had an increased (≥ 0.36) FCBI-index value (range: 1.40–7951, median: 22). The gene discussed is CRP; the disease is susceptibility to pneumonia measurement.