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2005年10月~2006年1月,全球分离到甲型流感(H1N1)、甲型流感(H1)、甲型流感(H5N1)和乙型流感病毒。全球流感疫情比近年同期轻,北美洲和亚洲在10月开始有流感疫情,一些国家在12月加剧,而欧洲在整个流感流行期间疫情均较轻。对流感病毒分离株的抗原性分析表明,甲型流感(H1N1)病毒的抗原性与A/新喀里多尼亚/20/99密切相关;甲型流感(H3N2)病毒的抗原性与参考病毒A/加利福尼亚/7/2004密切相关,但日益增加的比例与A/威斯康星/67/2005较密切相关;乙型流感病毒B/维多利亚/2/87谱系的抗原性与疫苗病毒B/马来西亚/2506/2004密切相关;B/山形/16/88谱系的抗原性很多与疫苗病毒B/上海/361/2002和B/江苏/10/2003不同,而与参考病毒如B/佛罗里达/7/2004和B/埃及/144/2005更密切相关。
From October 2005 to January 2006, Influenza A (H1N1), Influenza A (H1), Influenza A (H5N1) and Influenza B were isolated from the world. The global flu epidemic was lighter than in recent years, while North America and Asia started the flu epidemic in October, with some countries exacerbating in December and Europe the less during the entire flu pandemic. Antigenic analysis of influenza virus isolates showed that the antigenicity of influenza A (H1N1) virus was closely related to A / New Caledonia / 20/99; the antigenicity of influenza A (H3N2) A / California / 7/2004 but the increasing proportion is more closely related to A / Wisconsin / 67/2005; the antigenicity of influenza B / Victoria / 2/87 lineage and the vaccine virus B / Malaysia / 2506 / 2004; B / Yamagata / 16/88 lineages have many different antigenicities from the vaccine viruses B / Shanghai / 361/2002 and B / Jiangsu / 10/2003, but with reference viruses such as B / Florida / 7/2004 and B / Egypt / 144/2005 More closely.