河北省2006～2007年度流感监测分析

ANALYSIS AND SURVEILLANCE OF INFLUENZA IN HEBEI FROM 2006 TO 2007

[目的]分析2006～2007年度河北省流感流行特征与流感病毒亚型分布情况。[方法]收集2006～2007年度河北省流感样病例(Influenza Like Illness,ILI)监测资料,采集ILI咽拭子标本用MDCK细胞分离病毒,血凝抑制试验鉴定病毒型别。[结果]2006～2007年度河北省流感监测表明:ILI就诊百分比为3.22%,其中儿童为6.59%,成人为0.74%,按月统计ILI就诊高峰出现在2007年1月;采集ILI咽拭子标本727份,分离到流感病毒88株,分离率为12.10%,毒株型别以甲3亚型为主,66株(占75%),甲1亚型次之,21株(占23.86%),乙型最少,仅1株(占1.14%),其中67株是1月分离到的,其高峰值出现时间与ILI就诊高峰期一致。[结论]2006～2007年度河北省流感流行高峰为1月,先后出现甲1、甲3和乙型流感病毒的流行,甲3亚型为优势毒株。

[Objective]To analysis the epidemic characteristics and distribution of influenza virus subgroup in Hebei from 2006 to 2007.[Methods]Data of influenza like illness（ILI）patients were collected through Influenza Surveillance Network during 2006 to 2007. ILI throat swab collected from in the outpatients were performed cell detachment to get the virus which were isolated by MDCK cell,and the type of virus were identified by using hemagglutination inhibition assay.[Results]The surveillance of influenza in Hebei form 2006 to 2007 demonstrated that：the percentage of seeking the doctors of ILI was 3.22%,out of them,children and adults accounted for 6.59% and 0.74%,respectively,and the peak of seeking for the doctors was January 2007 according to the statistics by month;727 samples of ILI throat swabs were collected,and 88 influenza virus isolated with isolating rate for 12.10%.The type of strain was main influenza A3 virus,66 trains accounted for 75%;Followed by influenza A1,21 strains accounted for 23.86%;Influenza B with only 1 strain accounted for 1.14%;67 strains was isolated in January,the time of high-peak was in line with crest-time of seeking for doctors of ILI patients.[Conclusion]The peak of influenza in Hebei from 2006 to 2007 was January,influenza A1,A3 and B occurred in Hebei sequently,and influenza A3 was the dominance strain.