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历史告诉我们,流感病毒变异平均每100年在全世界范围内引起两次大爆发。是什么原因引起病毒变异?什么时候会大爆发?为什么有的病毒比其他病毒更为致命?所有的这些还有待科学家的进一步探究。
History tells us that on average, influenza virus mutations cause two major outbreaks every 100 years worldwide. What causes the virus to mutate? When will it explode? Why some viruses are more lethal than others? All of this remains to be explored by scientists.