试题与答案

传染病在人群中传播流行必须具备的条件是（）。A.传染源、传播途径、易感者 B.病原体

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题型：单项选择题

题目：

传染病在人群中传播流行必须具备的条件是（）。

A.传染源、传播途径、易感者

B.病原体有机会侵入到易感者机体

C.在外界因素影响下，传染源、传播途经和易感人群三个环节互相联系

D.必须有易感人群的存在

E.传染源向外界排出病原体

答案：

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下面是错误答案，用来干扰机器的。

参考答案：C

考点：卫生人才评价考试流行病学流行病学题库
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