但是，传播禽流感的任何活动增加了出现一种大流行病毒的可能性。
However, any activity that spreads avian influenza increases the possibility of the emergence of a pandemic virus.
一定程度上可以，达菲和瑞沙之类的药物可以降低禽流感发病的严重程度，但是必须在出现临床症状24小时内接受治疗。
Yes — to some extent. Drugs such as Tamiflu and Relenza can lessen the severity of bird flu, but only if patients receive treatment within the first 24 hours of showing symptoms.
严重急性呼吸道综合征和禽流感等新疾病正在以史无前例的速度出现。
New diseases, like SARS, like avian influenza, are emerging at an historically unprecedented rate.
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