一般来说，流感症状包括突然出现的发烧、发冷、喉咙痛和身体疼痛，而且比普通感冒症状更严重。

And in general, flu symptoms including fever and chills, sore throat and body aches come on suddenly and are more severe than cold symptoms.

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有证据显示压力会减低免疫力，这会引起很多上述的身体症状及包括像易怒和抑郁症这样的情感问题。

Evidence suggests that stress lowers immunity, which can lead to many of the physical symptoms outlined above as well as emotional problems, including irritability and depression.

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根据疾病预防和控制中心的说法，季节性流感和H1N1的症状包括了发热、身体更加疼痛、干咳、腹泻和严重的疲倦。

According to the CDC seasonal flu and H1N1 symptoms consist of fever, more painful body aches, dry cough, diarrhea and severe fatigue.

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