Zh-hans:抗原漂移

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1. Antigenic Drift 抗原漂移是指由于自发突变（称为基因可塑性）引起流感病毒上特定病毒株表层的血细胞凝集素和/或神经氨酸酶蛋白的变化，它发生在A型流感和B型流感毒株不断变化的基础上，迫使流感疫苗的成分必须不断地进行改变。


(Source: Business Continuity Management Institute - BCM Institute)

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