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2009年4月,一场突如其来的流感让世界为之一惊,这是继SARS之后,又一次大规模疫情。4月30日世界卫生组织、联合国粮农组织和世界动物卫生组织宣布,统一使用
In April 2009, a sudden flu shocked the world. This is yet another large-scale epidemic after SARS. April 30 WHO, the UN Food and Agriculture Organization and the World Animal Health Organization announced the uniform use of