Indirect transmission through the bite of a flea is the most common route of transmission between plague-infected rodents and humans.

经蚤类叮咬所致的间接传播是染疫啮齿动物与人之间最常见的传播方式。

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It showed the distribution of the most common varieties including the human flea (Pulex irritans), the dog flea (Ctenocephalides canis) and the cat flea (Ctenocephalides felis).

BBC: Who, What, Why: Have flea numbers jumped?