如果埃皮格是正确的，在那些国家通过接种疫苗，清洁水源和妥善的污水处理使得多种传染疾病几近绝迹，这即使不能全部至少也可以部分解释弗林效应。
If Mr Eppig is right, the near-abolition of serious infections in these countries, by vaccination, clean water and proper sewerage, may explain much if not all of the Flynn effect.
这些民众挤在一起以及水和卫生设施不良，使他们遭受肺炎、水源性腹泻病以及疟疾和麻疹等传染病的危险。
Those people crowded together with poor water and sanitation risk pneumonia, water-borne diarrhoeal diseases, as well as infectious diseases such as malaria and measles.
目前最紧急的卫生需要是预防传染病，特别是腹泻、痢疾和伤寒等水源性疾病的暴发。
The most urgent health need now is to prevent outbreaks of infectious disease, and particularly of water-borne diseases such as diarrhoeal diseases, dysentery and typhoid.
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