They are considered a high-risk group.

他们被视为高风险群体。

《牛津词典》

These workers are considered (as) a high-risk group.

这些工人被视为属高风险人群。

《牛津词典》

All volunteers were African American, a high-risk group for heart disease.

所有的志愿者都是非洲裔美国人，他们是心脏疾病的高发人群。

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Another high-risk group that would benefit from increased HIV testing, according to NICE, is the black African community living in England.

BBC: Doubling of UK HIV rate prompts routine testing call

" An astute observer of academia, Mr. Burton identifies scholars as a high-risk group for melancholy because they're so often "exposed to want, poverty and beggary.

WSJ: Robert Burton | The Anatomy of Melancholy | Digressions on a Diagnosis | Masterpiece by Danny Heitman

One in four American adults say they don't plan on getting a shot because they are not in a high-risk group, with 21 percent indicating they don't plan on getting vaccinated because they only go to a doctor when they are sick.

CNN: Poll: Majority of adult Americans don't want H1N1 shot