This apparent anomaly is partially explained by the fact that most founder mutations are recessive: only a person with copies of the affected gene from both parents becomes ill.

大多数明显的创始人突变都是隐性的，可以解释这种明显的异常现象：只有双亲都拥有受影响基因副本的人才会生病。

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Sub-Saharan Africa is the region worst affected by AIDS; it is also a region in which most people turn first to traditional healers when they fall ill.

撒哈拉以南非洲是受艾滋病影响最严重的地区；同时在这些地区，大多数人在生病的时候首先求助的对象是传统的治疗师。

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Mothers will also be affected by the same conditions, and if they become ill or die then there will be a knock-on effect on their children.

母亲们也生活在这样的条件下，如果她们生病甚至死亡，对于子女的冲击将是巨大的。

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The WHO measured how disability and other conditions affected ill health.

BBC: Aids Africa's top killer

Terminally-ill people with less than six months to live will not be affected by the changes.

BBC: Terminally ill people warned over possible benefit cut

The CDC is advising airline crew members who have arrived from domestic and international areas affected by the swine flu to be on the lookout for ill passengers.

CNN: Travelers returning from Mexico should be cautious