NEW YORK – Two cases of the human swine influenza have been confirmed in Kansas and one more in California, bringing the U. S. total to 11.

纽约——在堪萨斯州确认两例人患猪流感病例，另外在加利福尼亚州又确认一例，使美国患病人数总数上升至11人。

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This is a virus of animal origin with a unique mix of genes from swine, bird, and human influenza viruses.

这是一种由猪流感、禽流感和人流感病毒基因独特组合形成的动物源病毒。

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Five days since the announcement of Mexico's swine flu epidemic, the search for the source of the new virus that combines pig, bird and human influenza is focusing on three main possible sites.

在墨西哥的猪流感疫情公布五天后，对这种集猪、禽、人流感病毒于一身的新型病毒来源的搜索将目标对准了三个地方。

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Health officials in Mexico and the United States were puzzled by a virus that combined elements of swine, avian and human influenza.

VOA: standard.2009.12.25

The new virus has genes from North American swine influenza, avian influenza, human influenza and a form of swine influenza normally found in Asia and Europe, said Nancy Cox, chief of the CDC's Influenza Division.

CNN: Among the swine flu mysteries: Why only deaths in Mexico?

Symptoms of swine flu in humans are expected to resemble regular human seasonal influenza symptoms, including fever, lethargy, lack of appetite, and coughing, the CDC said.

CNN: CDC confirms 7 cases of swine flu in humans