2009-2010年茂名市流感监测结果分析

摘要

目的 了解茂名市2009-2010年流感流行状况及毒株的型别分布,分析流感流行趋势,为流感防控提供科学依据.方法 收集茂名市哨点医院的流感样病例(ILI)资料、流感疫情资料和病原学监测结果进行分析.结果 2009年报告ILI3693例,ILI%为4.44%.2010年报告ILI1078例,ILI%为0.81%;2009年和2010年流感核酸检测阳性率分别为54.60%和15.38%;2010年分离到52株流感毒株,以季节性流感H3N2毒株为主,占65.38%;2009年报告流感/ILI疫情11起,新甲型H1N1亚型引起8起和季节性流感引起3起;2010年报告1起季节性流感引起的疫情.结论 2 009年由于受到全球新甲型H1N1流感疫情影响,造成流感流行,新甲型H1N1毒株成为优势毒株;2010年流感活动相对平稳.%Objective To provide scientific support for the prevention and control of influenza by comprehending influenza prevalence and distribution of viral types in Maoming from 2009 to 2010 and by analyzing of the trend of influenza pandemic. Methods The data on influenza-like illness (ILI), influenza epidemic, and etiology were collected and analyzed. Results 3693 cases of ILI were reported in 2009, with a rate of 4.44%; and 1078 cases in 2010, with a rate of 0.81%. The positve detection rate of influenza nucleic acid was 54.60% in 2009 and and 15.38% in 2010. 52 strains of influenza virus were isolated in 2010, mostly were seasonal influenza H3N2, accounting for 65.38%. 11 outbreaks of influenza /ILI were reported in 2009, 8 of which were caused by a new subtype of H1N1 and the rest 3 by seasonal influenza virus. One outbreak of seasonal influenza occurred in 2010. Conclusions Influenza epidemic was due to the outbreak of global influenza caused by a new type of H1N1 in 2009. New types of H1N1 virus has become the dominant strains; Influenza was relatively stable in 2010