2004～2007年新疆流感监测分析

Analysis of Surveillance of Influenza in Xinjiang from 2004 to 2007

目的通过对新疆2004～2007年度流行性感冒(下简称流感)监测结果的分析,了解新疆流感流行特征,为进一步加强监测工作、制定防治对策提供科学依据。方法在4所哨点医院开展季节性流感流行病学与病原学监测,通过突发公共卫生报告管理信息系统进行流感暴发疫情监测。结果2004～2007年度,在4个哨点医院相关科室共监测就诊病例641613例,监测到流感样病例(ILI)21627例,流感样病例占就诊病例百分比(ILI%)为3.37%;采集并检测流感样病例样本1132份,分离到流感病毒181株,阳性检出率为16.0%,其中甲型流感病毒H1N1亚型92株,占50.8%,H3N2亚型44株,占24.3%,乙型流感病毒45株,占24.9%。结论2004～2007年度新疆流感呈低水平活动状态,其中2005～2006年度流感活动强于其他2个年度。散发病例呈现冬季高发的特点,暴发疫情多见于冬春季。3个监测年度中,流感病毒优势株的型别各不相同。

Objective To understand epidemic situation of influenza and to enhance influenza surveillance so as to offer scientific data. Methods The data of epidemiology and pathogen of influenza - like illness （ILI ） and outbreaks of influenza in Xinjiang from 2004 to 2007 were collected and analyzed. Results From 2004 to 2007, ILI eases accounted for 3.37% of total outpatients in 4 surveillance hospitals. There were 12 outbreaks of influenza in three years, and mainly occurred in primary and middle schools. 181 strains of influenza virus were isolated from 1 132 clinic samples with the positive rate of 16.0%. There were 92 strains of H1N1 subtype （50.8%）, 44 strains of H3N2 virus （24.3 %）, 45 strains of B type virus {24.9% ）. Conclusions In general, influenza activity remains low in Xinjiang during 2004 - 2007. The peaks of influenza are shown in winter. The predominant strains of influenza virus are different every year from 2004 to 2007.