乌鲁木齐市2011-2012年度流感监测结果分析

Analysis on influenza surveillance results from 2011 to 2012 in Urumqi City

目的对乌鲁木齐市流感监测结果进行分析,了解乌鲁木齐市流感流行动态,为流感防治提供科学依据。方法对2011年4月-2012年3月间乌鲁木齐市哨点医院的流感样病例(influenza-like illness,ILI)资料、流感疫情资料和病原学监测结果进行分析。结果 2011-2012年度全市哨点医院共报告流感样病例(ILI)27 848例,流感样病例就诊百分比(ILI%)平均为10.75%(27 848/259 062)。共采集流感样病例标本977份,核酸检测阳性148份,阳性率15.15%,其中B型104份、新甲型H1N1型22份、H3N2亚型21份、混合型1份。分离出流感病毒31株,分离率20.95%(31/148),以季节性流感B型为主,占64.52%。结论乌鲁木齐市2011-2012年度季节性流感高峰在1-3月,以B型流感病毒为主,H3亚型和新甲型H1N1亚型混合流行。加强流感的实时监测和及易感人群的防护,对我市流感的防控工作具有重要意义。

Objective To analyze the surveillance results of influenza in Urumqi and learn about the situation of the epidemic influenza, so as to provide scientific evidence for influenza prevention and control. Methods The data of influenza-like illness （ILI） and etiological surveillance results during April of 2011 to March of 2012 in Urumiqi were collected and analyzed. Results A total of 27 848 ILI cases were reported by sentinel hospitals from April of 2011 to March of 2012, and the average proportion of ILI cases in outpatients was 10. 75% （27 848/259 062） . 977 samples were taken from ILI cases and the positive detection rate of influenza nucleic acid was 15.15% , in which 104 samples were detected as B -type seasonal influenza, 22 cases were new subtype of H1N1, 21 cases were H3N1 positive and 1 case was mixed type. 31 strains of influenza virus were isolated and the isolating rate was 20. 95% （31/148）, which were mainly B- type, accounting for 64. 25%. Conclusions The incidence peak of influenza was from January to March in Urumqi from 2011 to 2012. B- type seasonal influenza virus has become the dominant strain, and both influenza A and B appeared. Strengthen the real -time surveillance and protection on susceptible population will have a significant impact on the control and prevention of influenza outbreak in Urumqi.