Part of these changes are due to antigenic drift, alterations caused by spontaneous mutation, producing minor changes in the antigenic structure of hemagglutinin. 抗原漂流为血凝素抗原结构微小变异,抗原突变为病毒在自然界进行基因重组。
Antigenic Drift of H_9N_2 Subtype Avian Influenza Viruses in Henan Province during 1998-2002 1998~2002年间河南省H9N2亚型AIV的抗原性漂变研究
Results In April 2001 new antigenic drift strain A 3/ 112/ GuiZhou/ 2001/ was separated from influenza-like illness in GuiYang. 结果2001年4月在贵阳类流感病人中分离出一株A3/112/GuiZhou/2001的新变异株。
AIV is well-known for its capability for genetic changes either through antigenic drift or antigenic variation. 禽流感病毒基因极易发生抗原漂移或抗原变异。
Separation on A New Antigenic Drift strain A_3 of Influenza Viruses in Guizhou 贵州省分离出一株甲3型流感病毒新变异株
These results suggest that E2 gene of Chinese vaccine virus mutates rapidly during production and may cause antigenic drift. 本研究提示国内疫苗毒的E2基因在生产中有较大变异,可能导致抗原漂移。
Objective To understand the epidemics and antigenic drift of influenza A ( H3N2) viruses in Guangdong province in 2002. Method Influenzas viruses isolated were cultured in MDCK cell and embryonated eggs. 目的了解广东省2002年H3N2亚型流感病毒流行及抗原性变异情况。
Objective To study pandemic type of influenza viruses in the human population and early discover new antigenic drift strain. 目的了解人群中流感流行的流感病毒型别,及时发现新的变异株。
Objective: Understand influenza B viruses circulating and antigenic drift and distributing since 2003 in Ningbo city. 目的:了解近年来宁波市乙型流行性感冒病毒流行和抗原性的变异情况及种系分布。
Owing to error-prone polymerase and segmented genome of influenza virus, there is common phenomenon of mutations ( antigenic drift) and reassortment ( antigenic shift) for influenza virus and emergence of new variants or strains. 由于其易于出错的聚合酶和片断化基因,流感病毒基因突变(抗原漂移)、重配(抗原转移)而产生新病毒株的现象非常普遍。
The fragmented genome of the influenza virus is more vulnerable to genetic variations which leads antigenic shift and drift. This phenomenon makes it more difficult to prevent and control this disease. 流感病毒抗原性易发生变异,抗原的漂移和转换给流感的防治带来了较大困难。
Antigenic drift of HA gene occurred in a late virus identified in a patient suffering from severe infection. 后期所分离的一株重症病例毒株HA基因序列发生了抗原漂移。