论文部分内容阅读
目的分析2009-2010年重庆市流感流行特征和监测结果,为控制流感提供科学依据。方法收集重庆市流感疫情资料、流感样病例监测资料、病原学资料和暴发疫情资料,并对资料进行分析。结果 2009-2010年重庆市出现流感流行,流行高峰集中在2009年9～10月,流行优势毒株为新甲型H1N1亚型,2010年1月以来则以季节性B型为主。城区监测点病毒分离阳性率显著高于农村监测点(χ2=133.04,P<0.001)。聚集和暴发疫情主要集中在学校(96%),流感疫情高发时间和病原学检测结果与监测情况一致。结论甲型H1N1流感在2009年出现流行并成为优势株,进入2010年B型流感活动加强,应及时加强流感样病例监测和病原学监测工作,防止出现流行。
Objective To analyze the epidemic characteristics and surveillance results of influenza in Chongqing from 2009 to 2010 and provide a scientific basis for controlling influenza. Methods Influenza epidemic data, influenza-like illness surveillance data, etiological data and outbreak data of Chongqing were collected, and the data were analyzed. Results There was a pandemic influenza epidemic in Chongqing from 2009 to 2010, and the epidemic peak was concentrated in the period from September to October in 2009. The predominant strain was the new type A H1N1 subtype and the seasonal type B type was the main factor since January 2010. The positive rates of virus isolation in urban monitoring sites were significantly higher than those in rural areas (χ2 = 133.04, P <0.001). Aggregation and outbreaks were mainly concentrated in schools (96%), and the high incidence of influenza outbreaks and the etiological test results were in line with the monitoring. Conclusion Influenza A (H1N1) influenza became prevalent in 2009 and became the predominant strain. Entered into 2010, the activity of influenza B should be strengthened. Influenza-like surveillance and etiological monitoring should be promptly strengthened to prevent the occurrence of pandemic.