Influenza is a serious public health problem that causes severe illnesses and deaths for higher risk populations.

流感是一个严重的公共卫生问题，可在高危人群中造成严重疾病和死亡。

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Taking bold measures to address legal and structural barriers that increase HIV vulnerability, particularly for most-at-risk populations.

采取果敢措施，解决加重艾滋病毒感染脆弱性的法律和结构性障碍，特别对于最高危人群而言。

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However, in many cases, there is poor enforcements of such laws and stigmatization of people living with HIV and most-at-risk populations persist.

但在许多情况下，这些法律实施不力，艾滋病毒携带者和最高危人群仍遭到歧视。

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Bird populations are among those at risk of being poisoned by the oil.

VOA: special.2010.05.04

That study is looking at several at-risk populations including gay men, IV-drug users and heterosexuals.

CNN: Gel cuts HIV transmission rate in study

The stockpiles are probably adequate at this time to immunize the high risk populations of America, older people, and people with chronic disease.

CNN: Dr. William Hall: Medical impact of bioterrorism

Bromet says the study findings can help countries identify their own high-risk populations, whether it's older adults in Ukraine or young divorced women in Japan.

CNN: People in affluent nations may be more depression-prone