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目的了解四川省绵阳市2009年甲型H1N1流行性感冒(甲型H1N1流感)疫情的流行病学特征。方法从中国疾病预防控制系统和现场调查资料中收集绵阳市甲型H1N1流感疫情的相关信息,采用描述性流行病学方法分析结果。结果 2009年绵阳市共诊断甲型H1N1流感407例,其中,经实验室确诊甲型H1N1流感病例393例,疑似病例14例。重症病例20例,危重病例6例,死亡病例1例。绵阳市所辖9个县(市、区)均有甲型H1N1流感疫情发生,发病数居前3位的依次是涪城区(60.20%)、三台县(18.67%)和安县(6.88%)。发病高峰为9-10月。确诊病例平均年龄16.6岁,男女性别比为1.51∶1。结论绵阳市甲型H1N1流感防控形势严峻,应加强流感样病例监测和重症病例诊断治疗,加强重点人群甲流疫苗接种工作。
Objective To understand the epidemiological characteristics of influenza A (H1N1) in 2009 in Mianyang, Sichuan Province. Methods The information of epidemic situation of Influenza A (H1N1) in Mianyang City was collected from China’s disease prevention and control system and field survey data, and the results were analyzed by descriptive epidemiological method. Results In 2009, 407 cases of influenza A (H1N1) were diagnosed in Mianyang City. Among them, 393 cases of Influenza A (H1N1) were confirmed by laboratory tests and 14 cases were suspected cases. 20 cases of severe cases, 6 cases of critical illness, 1 case of death. Influenza A (H1N1) outbreaks occurred in 9 counties (cities and districts) under the jurisdiction of Mianyang Municipality. Fucheng District (60.20%), Santai County (18.67%) and An County (6.88%) ranked the top three in terms of incidence. . The peak incidence of 9-10 months. The average age of diagnosed cases was 16.6 years old, with a male-female ratio of 1.51: 1. Conclusion The situation of prevention and control of influenza A (H1N1) in Mianyang City is severe. Influenza-like illness surveillance and diagnosis and treatment of severe cases should be strengthened, and influenza A vaccination should be strengthened in key populations.