所有这些因素综合在一起，使得估计和预测不够准确。

All these factors combined contribute to making estimation and prediction less than accurate.

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它源于感染肠出血性大肠杆菌，据估计，在受肠出血性大肠杆菌感染的患者中，多达10%的患者患溶血性尿毒综合征，死亡率可高达5%。

It results from EHEC infection, and it is estimated that up to 10% of EHEC-affected patients may develop HUS, with a mortality rate ranging up to 5%.

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根据已发表的工作和目前的研究，Viljoen估计，在西开普省，每1000名婴儿中就有70至80名儿童患有此综合征，这是全世界已知的最高发病率。

Based on his published work and ongoing research, Viljoen estimates that between 70 and 80 per 1000 babies born in the Western Cape have the syndrome - the highest known incidence in the world.

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