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自1990年春季开始,全世界人群中流感活动处于相当平稳的状态。今年入冬以来,流感形势将会如何?人们正注视着。但近年来流感病毒在我国家畜中活动有明显增强。如1989年春和1990年春,黑龙江和吉林两省马群中曾发生了由禽毒株来源的 H_3N_8亚型流感病毒引起的流感流行,造成数万匹马得病,数百匹马死亡并严重影响了当地的春耕生产。根据血清流行病学追溯研究,H_3N_8亚型毒株曾于1990年左右在人群中流行过。因此,H_3N_8亚型毒株在我国马群中突然出现
Since the spring of 1990, the influenza activity in the world population has been fairly steady. What will happen to the flu since winter this year? People are watching. However, in recent years, the activity of influenza virus in domestic animals has been significantly enhanced. For example, in the spring of 1989 and the spring of 1990, a flu pandemic caused by a H_3N_8 subtype influenza virus of avian strains occurred in the herd of Heilongjiang and Jilin provinces, causing tens of thousands of horses with disease and killing hundreds of horses and seriously affecting the local Spring production. According to the retrospective study of serum epidemiology, H_3N_8 subtype strains were prevalent in the population around 1990. Therefore, H_3N_8 subtype virus suddenly appeared in our country