Dr. William Schaffner, an infectious disease expert at Vanderbilt University, said that, right now, some of the safest eggs available to Americans are from small farms.
供职于范德堡大学的传染病学博士威廉•沙夫纳认为，现在美国市场上部分安全鸡蛋产于小型农场。
Polyoma virus: Minute infectious agent normally present in extremely small amounts in wild mice without causing obvious ill effects.
多瘤病毒：存在于野鼠身上、数量极少、致病力不强的一种感染性小病原体。
Expert: What happens is that a very small proportion of people with leprosy are infectious.
专家：实际情况是麻风病人中只有很少一部分有传染性。
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