这种疫苗对流感的免疫效力时间较长。

The vaccine provides longer immunity against flu.

《牛津词典》

流感的传染性很高。

Flu is highly infectious.

《牛津词典》

这是因为治疗流感的处方药需要在发病后尽快服用。

That's because the prescription drugs available for the flu need to be taken soon after the illness sets in.

youdao

So, this is a cell that's infected with a microorganism, it's infected with a virus, let's say it's infected with influenza virus.

这是一个感染了微生物的细胞,它感染了一种病毒,就说是感染了流感病毒吧

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You've got the flu, you've got influenza in your upper respiratory tract, your cells are making more influenza.

你就此得了流感,你得了上呼吸道流感,你的细胞正在制造更多流感病毒

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That's not meant to be a bad word but suggests being influenced, one might say, in the sense of "open the window and influenza," by those signs that precede it.

这不是个不好的词，只是想要表达影响的意思，人们可能说将一个符号之前的符号称作是“,“打开了窗户，引发了流感“

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