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This environmental relationship is further confirmed when people migrate from an area of low incidence to high incidence, and increase their risk of developing disease.

当人们从发病率低的地区迁移到发病率高的地区，他们患病的风险也随着增加，进一步证实了与环境的这层关系。

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Seasonal factors, such as the rainy season, along with population movements in the area contribute to this unusually high incidence of cholera.

雨季等季节性因素以及该地区的人口流动造成这一极不寻常的霍乱高发病率。

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Normally,Papua New Guinea, a mountainous, jungle-covered nation, contends with a high incidence of dengue fever and malaria.

VOA: standard.2009.09.14

There was also a high incidence of non-compliance with other relevant guidance (including A4e's own processes).

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Women are known to have a higher incidence of the condition - and this has fed into the idea that high heels or ill-fitting fashionable shoes are to blame.

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