Nasal airway miR-155 levels according to respiratory viruses in young children.

RSV = human respiratory syncytial virus, RV = human rhinovirus, HMPV = human metapneumovirus. *Virus frequency includes single and mixed viral infections. ** miR-155 levels calculated with ΔΔCt method normalized to a spike in control (cel-miR-39) and presented as median and IQR. ***p values relative to miR-155 values in the control (uninfected) group. No significant differences were observed in miR-155 levels according to virus (Kruskal Wallis p = 0.83).