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Viral Aetiology of Bronchiolitis in Hospitalised Children in a Tertiary Center in Tehran
One of the causes of infants’ hospitalizations is bronchiolitis, while different viral agents could be causative agents. As there is little information regarding the common agents of bronchiolitis in Iranian infants, we designed this study to determine which agents were responsible for hospitalization due to bronchiolitis among infants in an Iranian tertiary center. Two hundred and three infants with bronchiolitis who were hospitalized in Bahrami hospital were enrolled. Data regarding age, sex, duration of hospitalization, exposure to smoking, previous antibiotic usage and fever were collected for all enrolled cases. Throat sample by means of soap was collected and rapid test with immunochromatography (IC) test was performed. Rapid test was positive in 59 (29%) cases and three cases had concomitant infection with two viruses. The most common viral agent was RSV (Respiratory Syncytial Virus). Mean age was significantly lower in cases with RSV or RSV+ adenovirus infectious in comparison with other two groups (adenovirus or influenza only), while mean duration of hospitalization was significantly longer in RSV/RSV+ adenovirus group. RSV is the most common viral etiology of bronchiolitis in Iranian infants less than one year old, which is related with younger age and longer duration of hospitalization.
Keywords: bronchiolitis, infants, Iran.