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[目的]了解洛阳市甲型H1N1流感流行特征,为制定下一步的防控工作措施提供科学依据。[方法]对洛阳市2009年甲型H1N1流感监测系统数据进行描述性分析。[结果]2009年累计报告甲型H1N1流感病例200例,报告发病率为3.11/10万,其中重症病例12例,死亡2例。病例分布在全市14个县,城区发病率、农村发病率分别为2.02/10万和3.77/10万。200例中,8月占36.18%、9月占24.62%;学生占90.50%。流感哨点监测显示2009年流感流行呈混合型,在356株流感阳性标本中,甲型H1N1流感病毒核酸阳性165份(占46.35%),季节性H3流感44份(占12.36%),B型流感47份(占13.20%)。[结论]2009年洛阳市甲型H1N1流感病例以学生居多,农村高于城市,应强化各种监测系统的综合利用。
[Objective] To understand the epidemic characteristics of Influenza A (H1N1) in Luoyang and provide a scientific basis for formulating the prevention and control measures. [Methods] Descriptive analysis of data of 2009 H1N1 Influenza Surveillance System in Luoyang City. [Results] A total of 200 cases of Influenza A (H1N1) were reported in 2009, with a reported incidence of 3.11 / 100 000, including 12 critically ill patients and 2 deaths. Case distribution in the city’s 14 counties, urban incidence, rural incidence rates were 2.02 / 100,000 and 3.77 / 100,000. In 200 cases, 36.18% were in August, 24.62% in September and 90.50% were students. Influenza sentinel surveillance showed that the influenza epidemic in 2009 was mixed. Among 356 influenza positive samples, 165 (46.35%) were positive for the influenza A (H1N1) virus, 44 (12.36%) were seasonal H3 influenza, 47 flu (13.20%). [Conclusion] The cases of influenza A (H1N1) in 2009 in Luoyang are mostly students and rural areas are higher than the cities, and the comprehensive utilization of various monitoring systems should be strengthened.