一个新菌株的猪流感病毒表示，流感流行的变种，若从人跳回到猪身上，就会以新的和不可预知的方式继续演变。
A new strain of swine flu shows that the pandemic version has jumped from humans back to pigs, where it's evolving in new and unpredictable ways.
没有在人类发现流感病毒新变种。
No new influenza virus subtypes have been detected in humans.
如果新的流感变种感染了他们的猪，这就可能促使价格进一步下跌，并有可能通过猪更广泛地传播。
If the new flu strain does hit their herds, it could spur further price declines, and could potentially spread broadly through herds.
然而，这一新的“猪流感”病毒变种，却有令人难以理解的现象。
However, this new "swine flu" virus, but the phenomenon is hard to understand.
没有在人类发现流感病毒新变种。但流感病毒在动物间传播对人类致病构成明显威胁。
No new influenza virus subtypes have been detected in humans. However, a circulating animal influenza virus subtype poses a substantial risk of human disease.
没有在人类发现流感病毒新变种。但流感病毒在动物间传播对人类致病构成明显威胁。
No new influenza virus subtypes have been detected in humans. However, a circulating animal influenza virus subtype poses a substantial risk of human disease.
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