现在，科学家们怀疑是禽类先传染了我们，而后我们又传染了猪。
Scientists now suspect that birds infected us, and we, in turn, infected the pigs.
对其接触源的调查发现在症状出现前几天在她家附近有禽类死亡的报告。
Investigations into the source of her exposure found reports of bird deaths near her home in the days prior to symptom onset.
禽类死亡的情况也出现在了附近的洛杉矶，圣迭戈和圣伯纳迪诺，无独有偶，放弃抵押住房的现象同样也大量存在这些地区。
Dead birds are also piling up in neighbouring counties like los Angeles, San Diego and San Bernardino, which also have high foreclosure rates.
现在，WHO全球流感协作网中的实验室正在对来自不同国家感染的禽类中分离出的病毒和人类病例分离出的病毒进行分子水平上的研究。
Laboratories in the WHO global influenza network are now conducting studies, at the molecular level, of viruses isolated from infected birds in the different countries, and from the human cases.
现在，WHO全球流感协作网中的实验室正在对来自不同国家感染的禽类中分离出的病毒和人类病例分离出的病毒进行分子水平上的研究。
Laboratories in the WHO global influenza network are now conducting studies, at the molecular level, of viruses isolated from infected birds in the different countries, and from the human cases.
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