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目的了解天津市塘沽区流行性感冒(以下简称流感)的流行规律,为预防和控制流感提供科学依据。方法收集2009—2012年流感样病例(ILI)的百分比监测数据,分析ILI占门诊就诊病例的百分比(ILI%),并用SPSS 15.0进行统计分析。结果 2009—2012年哨点医院共报告流感样病例29 553例,占门急诊就诊病例总数(1 673 458例)的1.77%。2009—2012年4个监测年度ILI%分别为7.76%、1.47%、0.82%和0.79%,病例主要集中在≤24岁的儿童和青少年,占病例总数的82.61%;2009年10—12月份呈现1个高峰,2010—2012年流感疫情平稳;发热门诊ILI%最高,为45.14%。结论塘沽区2009—2012年哨点医院ILI%呈下降趋势,流感发病相对稳定,未发生大规模的暴发流行,但老年人ILI%呈上升趋势,提示应重点关注该人群的疫苗接种工作。
Objective To understand the prevalence of influenza in Tanggu District of Tianjin (hereinafter referred to as influenza) and provide a scientific basis for the prevention and control of influenza. Methods The percentage surveillance data of influenza-like illness (ILI) from 2009 to 2012 were collected to analyze the percentage of ILI outpatient visits (ILI%) and analyzed by SPSS 15.0. Results A total of 29 553 flu-like cases were reported at sentinel hospitals in 2009-2012, accounting for 1.77% of the total number of outpatient visits (1 673 458 cases). The ILI% of the four monitoring years from 2009 to 2012 were 7.76%, 1.47%, 0.82% and 0.79%, respectively. The majority of cases were children and adolescents ≤24 years of age, accounting for 82.61% of the total number of cases; from October to December 2009 1 peak, the epidemic of influenza was steady from 2010 to 2012; fever ILI% was the highest, 45.14%. Conclusion The ILI% of sentinel hospitals in Tanggu District decreased from 2009 to 2012, and the incidence of influenza was relatively stable. There was no outbreak of large-scale outbreaks. However, the ILI% of elderly people showed an upward trend, suggesting that the vaccination should be focused on this population.