广西2005～2006年流感监测结果分析

Analysis of influenza surveillance in Guangxi,2005-2006

目的对广西流感监测网络下属的4家医院送检的咽拭子进行检测,探讨流感病毒优势株的变化,了解广西流感流行规律,为流感防制提供科学依据。方法选择广西区妇幼保健院、隆安县人民医院、南宁市妇幼保健院和南宁市第一人民医院作为监测点,对流感样病例进行逐日统计,对符合采样条件的流感样病例进行采样,采用细胞培养法分离鉴定流感病毒。结果2005、2006年广西流感监测医院的流感样病例春、夏季高峰明显,4家流感监测医院的流感样病例数占门诊总病例数的百分比为10.04%～26.30%。2005年分离到125株流感病毒,其中B型63株(占50.40%),H3N2亚型46株(占36.80%),H1N1亚型16株(占12.80%),2006年分离到191株流感病毒,其中B型78株(占40.84%),H3N2亚型3株(占1.57%),H1N1亚型110株(占57.59%)。结论2005、2006两年广西流感监测医院的流感样病例全年均有发生,春、夏季为高发季节,2005年的流行株为B型流感毒株,2006年流行株为H1N1型流感毒株。

Objective To detect the specimens for influenza viruses, and to discuss the change of the predominant strains of influenza in order to provide evidence for the prevention of influenza. Methods Guangxi Maternity and Infant Institute（MCH） ,Longan People＇s Hospital, Nanning MCH and Nanning No. 1 Hospital were chosen as surveillance sites. The number of influenza-like cases was counted daily. Cell culture was used to isolate influenza virus. Results The number of influenza-like cases were obviously higher in spring and summer in 2005, the percentage of the number of influenza-hke cases accounted for the total out-patients was 10.04% - 26.30% respectively. A total of 125 strains of influenza viruses were isolated in 2005, 63 strains were identified as type B, 46 strains as type A（H3N2） and 16 strains as type A（ H1N1 ） ; A total of 191strains of influenza viruses were isolated in 2006, 78 strains were identified as type B, 3 strains as type A （H3N2） and 110 strains as type A（ H1N1 ）. Conclusion Influenza-like cases occurred in the four surveillance hospitals in 2005-2006. The predominant strain in 2005 was type B, and the predominant strain in 2006 was type A（ H1N1 ）.