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目的对2004-2007年江西省流行性感冒(流感)病原学监测结果进行分析,进一步了解流感病毒的流行趋势,探索流感流行的规律。方法采集国家级监测哨点医院流感样患者的鼻咽拭子标本,用MDCK细胞分离流感病毒,用常量红细胞凝集抑制法(HI)鉴定病毒。结果2004-2007年共采集标本4564份,分离出流感病毒576株,分离率12.62%。其中A型H1N1亚型118株,占阳性株的20.49%,H3N2亚型238株,占阳性株的41.32%;B型V ictoria系108株,占18.75%,B型Yamagata系114株,占19.79%。结论2004-2007年江西省有A型H1N1亚型、H3N2亚型和B型V ictoria系、Yamagata系流感病毒流行,H3N2亚型流感病毒为主要流行优势株。
Objective To analyze the surveillance results of epidemic influenza (influenza) in Jiangxi Province during 2004-2007, further understand the epidemic trend of influenza virus and explore the regularity of influenza epidemic. Methods Nasopharyngeal swab samples from influenza-like patients in national surveillance sentinel hospitals were collected. Influenza virus was isolated from MDCK cells and identified by constant hemagglutination inhibition (HI). Results A total of 4564 specimens were collected from 2004 to 2007, 576 influenza viruses were isolated with a separation rate of 12.62%. 118 strains of type A H1N1 subtype accounted for 20.49% of the positive strains, 238 strains of H3N2 subtype accounted for 41.32% of the positive strains, 108 strains of B type Victoria strains accounted for 18.75%, 114 strains of type B Yamagata strains accounted for 19.79 %. Conclusion From 2004 to 2007, there were type A H1N1 subtype, H3N2 subtype and type V Victoriaia strain, Yamagata type influenza virus and H3N2 subtype influenza virus in Jiangxi Province.