Objective 　To investigate the epidemical status of influenza in Mianyang during 2010-2011, so as to provide evidence for formulating prevention and control strategies.
Methods 　Surveillance data, ILI etiological results, outbreak and epidemic situation of the influenza-like illnesses (ILI) in Mianyang during 2010-2011 were collected for analysis.
Results 　There were 12 100 ILI cases reported in 2010, accounted for 2.72% of the total outpatients. While 8 364 ILI cases accounted for 1.83% of the total outpatients were reported in 2011, reduced by 32.47% compared with 2010. The temporal distribution of doctor-visiting ratio in those two years was in an increased bimodal pattern. Most cases were children aged 0-5 years, accounted for 46.24%. Most ILI cases were treated in the department of fever, accounted for 88.56%. A total of 788 ILI specimens were collected for the detection of Real time RT-PCR, of which 34 specimens showed positive strains (4.31%) including 5 influenza A/H1N1 (0.63%), 8 influenza A (1.02%), 1 seasonal influenza A/H3 (0.13%) and 20 influenza B (2.54%). No outbreak and epidemic situation in Mianyang during 2010-2011.
Conclusion 　The influenza activity is relatively stable without large-scale outbreak in Mianyang during 2010-2011. The reporting quality of surveillance hospitals should be improved and the lab of flu surveillance network should actively prepare to do the isolation and identification of influenza virus. It is necessary to enhance flu surveillance so as to prevent and control influenza prevalence．

Citation： SHI Yinghong,LIU Changdi. Sentinel Surveillance of Influenza-Like Illnesses in Mianyang during 2010-2011. Chinese Journal of Evidence-Based Medicine, 2013, 13(3): 272-275. doi: 10.7507/1672-2531.20130047 Copy