Ago, people did not find this pig influenza would be spread between humans.

以前，人们并没有发现这种猪的流感会在人类之间传播。

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Meanwhile, also had more than 20 people in the us to infect the pig influenza virus.

与此同时，在美国也有20多人传染了猪流感病毒。

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Sequencing of all eight gene segments found no evidence of genetic reassortment with human or pig influenza viruses and no evidence of significant mutations.

所有八个基因片断的排序未发现证据表明与人或猪的流感病毒发生基因重组，也无证据表明发生显著突变。

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