当时，静脉注射生理盐水被认为是治疗腹泻脱水的正规疗法。

At the time, intravenous salt solution was the standard response to diarrheal dehydration.

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腹泻造成的最严重威胁是脱水。

The most severe threat posed by diarrhoea is dehydration.

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在出现症状的病人中，有80%出现轻度或中度症状，而约20%的病人患有急性水样腹泻，同时伴有严重脱水。

Among people who develop symptoms, 80% have mild or moderate symptoms, while around 20% develop acute watery diarrhoea with severe dehydration.

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