Strains circulating at the end of one season's epidemic are sometimes responsible for the next season's outbreak (the so-called herald wave phenomenon).

在一个季节流感结束的时候菌株的传播可能是引起下一季流感暴发的原因(因而被称为前峰波现象)。

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Strains circulating at the end of one season's epidemic are sometimes responsible for the next season's outbreak (the so-called herald wave phenomenon).

在一个季节流感结束的时候菌株的传播可能是引起下一季流感暴发的原因(因而被称为前峰波现象)。

youdao