The annual jab fest for the seasonal flu is already underway, leaving many grown-ups wondering if the annual stick in the arm is right for them.

一年一度的季节性流感疫苗注射已经开始了，让许多成年人开始怀疑每年一次的流感疫苗注射是否适合他们。

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But so is seasonal flu.

但季节性流感也是如此。

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It causes seasonal flu in every subsequent year.

它在随后每年引起季节流感。

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W.H.O.special adviser Keiji Fukuda reported earlier this month that the virus has acted in some ways like seasonal flu.

VOA: special.2009.11.24

W.H.O.special adviser Keiji Fukuda said last week that the virus has continued to act in some ways like seasonal flu.

VOA: special.2009.11.11

And,unlike seasonal flu, younger people have suffered many of the serious cases and deaths from the virus.

VOA: special.2009.11.24

Seasonal flu vaccinations were administered to 57 percent of the population, compared with 37 percent nationwide.

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But it's just -- it's a little more serious than the normal seasonal flu.

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It appears to be acting like a typical seasonal flu, only it's out of season.

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