Viral etiological analysis on hospitalized children with acute lower respiratory tract infection in Jiujiang area in winter and spring from 2008 to 2012

Objective: To monitor respiratory tract viral infection in hospitalized children with acute lower respiratory tract infection( ALRI) in Jiujiang area in winter and spring,explore the epidemic regularity. Methods: The hospitalized children with ALRI in winter and spring from 2008 to 2012 were selected,the venous blood specimens were obtained on the day of admission and on the fifth day of course of the disease to monitor respiratory tract viral IgM,including respiratory syncytial virus( RSV),adenovirus( ADV),influenza virus( IV), and parainfluenza virus( PIV),the positive specimens were analyzed statistically. Results: A total of 918 children were monitored in winter and spring from 2008 to 2012,216 children were found with positive respiratory tract viruses,accounting for 23. 5%( 216 /918); 178 children were found with RSV,accounting for 82. 4%( 178 /216); 8 children were found with ADV,accounting for 3. 7%( 8 /216); 13 children were found with IV,accounting for 6. 0%( 13 /216); 17 children were found with PIV,accounting for 7. 8%( 17 /216). The peak time of onset of RSV was from December to January,February in the nest year; RSV was commonly found in children under one year,the peak age of onset of RSV was under six months; bronchopneumonia and capillary bronchitis were main types of ALRI,the ratio of boys to girls was 2. 08∶ 1,the epidemic trends from 2008 to 2012 were almost the same. Conclusion: The main pathogen of ALRI in Jiujiang area is RSV,the positive rates of IV and PIV are relatively low,the distribution of ADV is sporadic.