传染很可能扩散到新的地区。
任何疾病特别是原因不明的新的传染性疾病，都是全人类的共同敌人。
All diseases, particularly new infectious diseases of unknown causes, are common enemies to entire mankind.
但在一些地方和国家新的传染病增加。
But new infections continue to increase in some areas and countries.
到最后，你可能会产生一种具有易传染能力的新毒株。
You end up with a new strain that has easy transmissibility .
到最后，你可能会产生一种具有易传染能力的新毒株。
You end up with a new strain that has easy transmissibility .
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