Most of the infections in Europe and Asia were " travel-related cases ," which means the virus has not taken root there , said Feiji Fukuda , the WHO 's director for health security and environment .
欧洲和亚洲发生的病例主要都是“与旅行有关的病例”，即说明病毒并未扎根于这些地区，世界卫生组织卫生安全与环境部长FeijiFukuda表示。
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