Abstract:Objective To investigate the efficacy of interferon alpha 2b inhalation on the treatment and immune function of children with bronchiolitis. Methods A total of 128 children with bronchiolitis admitted to our hospital were randomly divided into two groups. The control group was treated with budesonide and ipratropium bromide atomization, while the observation group was treated with recombinant interferon alpha 2b inhalation. The clinical efficacy 1 week after treatment and the recurrence rate of respiratory syncytial virus (RSV) infection within 4 months were compared between the two groups. Serum levels of IgG, IgA, IgE, IgM, TNF-alpha, ECP and EOS were measured before and after treatment. Result Comparing the curative effect of the two groups, the total rate of control+marked effect in the treatment group was better than that in the control group (P < 0.05). There was no significant difference in the levels of IgG, IgA, IgE, IgM and TNF-a between the two groups before treatment (P > 0.05). The levels of IgE and TNF-a in the observation group were lower than those in the control group after treatment (P < 0.05), while IgG in the observation group were higher than that in the control group after treatment (P < 0.05). There was no significant difference in IgA and IgM between the two groups after treatment (P > 0.05). There was no significant difference in ECP and EOS between the two groups before and after treatment (P > 0.05). After treatment, ECP and EOS in the observation group were lower than those in the control group, with statistical significance (P < 0.05). The recurrence rate of infection in the treatment group (3.13%) was lower than that in the control group (15.63%) after 4 months, and the difference was statistically significant (P < 0.05). Conclusions Interferon α-2b inhalation can effectively treat bronchiolitis in children, regulate the cellular immunity and humoral immune function of bronchiolitis, which is not easy to recur. It is worthy of clinical application.