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在1918~1919年期间,“西班牙”(“Spanish”)流感造成全球约2千万至5千万人死亡.为了防止再发生如此致命的暴发流行,长期以来,科学家力求阐明“西班牙”流感毒株与其它比较良性的毒株有什么特征性差异.由于研究者缺乏该杀伤性病毒的活样本,故而不可能解决这个关键性问题.现在有
The “Spanish” flu caused between 20 and 50 million deaths worldwide between 1918 and 1919. To prevent the recurrence of such a deadly outbreak, scientists have long sought to clarify the “flu” in Spain What are the characteristic differences between strains and other more benign strains that can not be solved because of the lack of live samples of the killer virus?