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目的了解南宁市2009~2013年流感流行特征,为制定流感防制策略提供科学依据。方法通过“中国流感监测信息系统”收集2009~2013年南宁市国家级哨点医院流感样病例(ILI)监测数据、病原学监测结果进行分析。结果 2009~2013年南宁市平均ILI%为18.5%,病例以<15岁儿童为主。共采集ILI标本6 048份,核酸检测阳性标本1118份,阳性率为18.5%,其中甲型H1N1型471份,A(H1N1)型22份,A(H3N2)型289份,B型336份。2009年流感季节类型为甲型H1N1和A(H3N2)型混合型,2010年为B型、甲型H1N1和A(H3N2)型混合型,2011年甲型H1N1占优势,2012年为B型和A(H3N2)型混合型,2013年为甲型H1N1和B型混合型。结论甲型H1N1、A(H3N2)型和B型在不同年份、不同季节表现出交替占优势的特征,发病以15岁以下儿童为主。
Objective To understand the epidemic characteristics of influenza in Nanning from 2009 to 2013 and provide a scientific basis for the development of influenza prevention and control strategy. Methods The surveillance data of influenza-like illness (ILI) in Nanning National Sentinel Hospital from 2009 to 2013 were collected through “China Influenza Surveillance Information System” and the results of pathogen surveillance were analyzed. Results The average ILI% in Nanning from 2009 to 2013 was 18.5%. The cases were mainly children aged <15 years. A total of 6 048 ILI samples were collected, and 1118 positive samples were obtained. The positive rate was 18.5%, of which 471 were H1N1, 22 were A (H1N1), 289 were A (H3N2), and 336 were B. Influenza A H1N1 and A (H3N2) mixed type in 2009, and mixed type B, H1N1 and A (H3N2) in 2010, H1N1 in 2011, B type in 2012 A (H3N2) hybrid, 2013 H1N1 and B hybrid. Conclusion The H1N1, A (H3N2) type and B type showed the characteristics of alternating predominance in different years and seasons. The incidence was mainly in children under 15 years of age.