青海省2010-2012年流感样病例监测分析

Surveillance analysis on influenza-like illness during 2010-2012 in Qinghai province

目的分析青海省2010-2012年流感样病例监测结果,掌握流行性感冒流行趋势,为制定防控措施提供科学依据。方法依托中国流感监测信息系统,按照《全国流感监测方案》要求在青海省15家流感监测哨点医院开展流感样病例流行病学和病原学监测。结果 2010-2012年青海省流感样病例以冬春季节高峰明显,共报告流感样病例39 607例,门急诊病例总数就诊百分比为2.31%(39 607/1 715 116);流感样病例主要集中在15岁以下儿童,共29972例,占75.67%;real-time RT PCR核酸检测共检出阳性标本648份,阳性率为8.27%(648/7 832),不同年份检出阳性标本型别有所不同。结论青海省流感样病例全年均有发生,以冬春季为高发季节,不同型别的流感病毒在不同年份表现出交替占优势的特征,侵袭的人群以儿童为主。

Objective To analyze the surveillance results of influenza - like illness（ILI） and investigate the prevalent trend of influenza from 2010 to 2012 in Qinghai procince,which provide the scientific basis for the development of prevention and control measures. Methods ILI recorded on the China influenza surveillance information system from 15 influenza surveillance sentinel hospitals in Qinghai province were made for epideniology and etiology surveillance according to the National influenza surveillance program. Results It was shown that ILI mainly occurred in winter and spring from 2010 to 2012, 39607 ILl cases reported in total, accounting for 2.31% （39607/1715116） of total number of outpatients and emergency cases ; including 29972 cases under 15 years old, accounting for 75.67% ; 648 cases were detected with positive by real -time RT PCR, which positive rate was 8.27% （648/7832） , and the influenza virus type constitution was different each year. Conclusions ILI occurred throughout the year in Qinghai province, concentrated in the winter and spring, influenza virus showed the alternative predominant characteristic in different year, and children were infected easily.