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目的:分析2009年台州市流感的流行及优势株的转换情况,为流感疫情的监控提供依据。方法:采集流感哨点医院流感样病例咽拭子及流感疫情标本,用实时荧光定量RT-PCR方法进行流感病毒核酸检测同时进行亚型鉴定。结果:共检测标本1282份,流感病毒核酸阳性633份,总阳性率49.38%,其中甲型H1N1亚型占48.18%、A3亚型占39.18%、B型占9.60%、A1亚型占3.0%。结论:台州地区同时存在甲型H1N1型,A1型,A3型和B型流感的流行,在不同季节上有优势株的转换。3月-6月以B型流感为优势株,7月-9月转换为A3型,10-12月又以甲型H1N1较为流行。9月-12月的流感疫情均为甲型H1N1型。
Objective: To analyze the prevalence of influenza in Taizhou in 2009 and the transformation of dominant strains, and provide the basis for the monitoring of influenza epidemic. Methods: Throat swabs and influenza outbreak samples were collected from the sentinel hospitals of the sentinel hospital, and the influenza virus nucleic acid was detected by real-time fluorescence quantitative RT-PCR. Results: A total of 1282 samples were detected, 633 were positive for influenza virus nucleic acid, the total positive rate was 49.38%, of which 48.18% were H1N1, 39.18% were A3, 9.60% were type B, 3.0% . Conclusion: There is a prevalence of Influenza A H1N1, A1, A3 and B in Taizhou area at the same time, and there are transitional strains in different seasons. From March to June, influenza B was the predominant strain, which was converted to A3 from July to September, and to influenza A (H1N1) from October to December. September-December influenza epidemic are type A H1N1.