英文：epidemic region 若干个疫源地连成片，范围较大为疫区。即病毒或病菌所能传播的地区。疫区的范围大小受传播方式和环境条件的限制。带菌者的飞沫传播只限于飞沫所能到达的范围，动物的传播范围根据它们活动的幅度大小而定。当传染源病数目达到一定数量，而且相互交叉、扩大、重叠时形成疫区。
二是自公告发布之日起启运的来自墨西哥和美国疫区的猪及其产品，一律作退回或销毁处理。
Second, the shipments of pig and pig products that depart Mexico and the epidemic area of the US since the day when the Notice is issued shall be returned or destroyed.
在疫区自然传播的黄热病病毒可能导致这些危险性差异，GACVS认为，对这种可能性的研究非常重要。
GACVS considered that it would be important to examine the possibility that naturally circulating yellow fever virus in endemic regions may account for some of these differences in risk.
疫区当地的卫生当局正在与社会动员专家和宣传队密切合作，为地方社区提供关键性的信息消息。
The local health authorities in the affected area are working closely with social mobilization experts, and communication teams to develop key information messages for the local communities.
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