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[目的]掌握流感流行趋势及流感病毒的活动特点,探明流感流行规律,为制定预防和控制流感流行措施提供科学依据。[方法]依照《全国流感/人禽流感监测方案(2005～2010)试行》要求进行流行病学和病原学监测,即由国家级监测哨点医院每日统计就诊的流感样病例数和门急诊总人数,并采集部分流感样病例的鼻咽拭子标本,用MDCK细胞分离流感病毒。[结果]2006年4月～2007年3月国家级监测哨点医院流感样病例占门(急)诊总数的4.66%,儿童流感样病例占流感样总病例的79.45%,成人占20.55%。2006年8月和2007年2月出现流感发病高峰。共采集标本522份,分离出流感病毒47株,分离率9.00%,其中H1N1亚型18株、H3N2 1株、B型(Yamagata1系)28株。[结论]曲靖市有H1N1亚型、H3N2亚型和B型(Yamagata系)流感病毒流行,其中H1N1亚型和B型毒株表现出不同季节交替占优势的流行特征。15岁以下儿童是此流行期的高发人群。
[Objective] To master the epidemic trend of influenza and the characteristics of influenza virus activity, to find out the epidemic rule of influenza and to provide a scientific basis for the development of epidemic prevention and control measures. [Methods] According to the “National Influenza / Human Flu Surveillance Program (2005-2010) Trial” requires epidemiological and etiological monitoring, that is, the number of influenza-like cases treated by the national surveillance sentinel hospitals and the outpatient and emergency department The total number of nasopharyngeal swabs was collected from some flu-like cases and the influenza virus was isolated from MDCK cells. [Results] From April 2006 to March 2007, the number of flu-like cases accounted for 4.66% of the total number of cases in the national-level sentinel surveillance hospitals, 79.45% of cases of influenza-like illness in children and 20.55% of adults in children. August 2006 and February 2007 peak incidence of influenza. A total of 522 specimens were collected and 47 strains of influenza virus were isolated with the isolation rate of 9.00%, including 18 strains of H1N1, 1 strain of H3N2 and 28 strains of type B (Yamagata1). [Conclusion] The prevalence of H1N1, H3N2 and B type (Yamagata) influenza viruses in Qujing City was very high. The H1N1 subtype and the B type strain showed epidemic characteristics with alternating predominance in different seasons. Children under the age of 15 are high in this prevalent period.