Dr Chan provided the delegates with a stark survey of health challenges — from ancient afflictions like leprosy to future human health impacts of climate change.

陈博士向代表们直率地提供了对卫生挑战的调查结果——从古代的疾病，到气候变化今后对人类健康的影响。

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Then the researchers zeroed in on a gene variant that offers protection against diseases like tuberculosis or leprosy.

然后，研究人员们将注意力集中于由基因变体所引起的，对诸如结核病或者麻风病之类的预防上面。

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However, she said the new theory did not explain why places like India and Ethiopia still have relatively high levels of both leprosy and TB.

BBC: NEWS | Health | TB 'may have killed off leprosy'