更重要的是，这种减毒活病毒结种于未孵化的鸟类后可提供有效的预防。

More importantly, this live attenuated virus provided effective protection when it was administered to birds before they had hatched.

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通过给未孵化的卵接种预防流感病毒，我们可以预防野生鸟类和家养禽类感染流感病毒株，从而限制疾病播散至人类。

By vaccinating eggs against influenza, we could protect wild bird species as well as domestic chickens against pandemic flu strains, limiting the spread of disease to humans.

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