据报告，其中有3只鸡在她发病前死亡。

Three of her chickens reportedly died before she became ill.

youdao

感染源调查显示发病前曾与病禽密切接触。

Investigations into the source of her infection indicated close contact with sick poultry prior to becoming ill.

youdao

感染源调查显示发病前曾与病死家禽密切接触。

Investigations into the source of infection indicated close contact with dead and sick poultry prior to becoming ill.

youdao

The World Health Organization keeps track of what countries have cases of polio and when they occur, and what the frequency of--So, this is a map from a few years ago and there are efforts that occur occasionally.

世界卫生组织一直跟踪记录,发生小儿麻痹症的国家及发病时间,以及发生的频率,那么,这是从几年前开始统计的,一个地图,这里是一些偶然产生的成就

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