If the c-reactive protein (CRP) result returns ≤ 40 and no specific bacterial infection is diagnosed, no further antibiotic should be prescribed.10 Hypertonic saline nebulisation is prescribed for wheezing.11 Although oral steroids are not part of the routine treatment of bronchiolitis, we prescribe short courses to admitted children with persistent wheezing after 4 h or wheezing not improving after two nebulisations. This evidence concerns the gene CRP and bacterial infectious disease.