Mexican officials began to notice in late March that an unusually high number of patients were suffering from pneumonia and other respiratory illnesses. After preliminary investigations, it was concluded this month that the cause is not seasonal influenza but rather an entirely new hybrid strain composed of pig, bird and human viruses.
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Pigs are flu sponges, capable of contracting both bird and human viruses that can jump across the species barrier, Richt says.
里希特说，猪是流感海绵，能够跨跃物种界线吸取人类和禽类的流感病毒。
After preliminary investigations, it was concluded this month that the cause is not seasonal influenza but rather an entirely new hybrid strain composed of pig, bird and human viruses.
初步调研后的结论表示，这些病症并非季节性流感所致，而是因为一种由猪、鸟、人类病毒组成的全新杂交病毒链。
The virus combines human, bird and pig viruses.
这种病毒结合了人类，鸟类和猪类的病毒。
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