他们被视为高风险群体。

They are considered a high-risk group.

《牛津词典》

具体努力的目标应该是向高风险群体。

Specific efforts should be targeted to high-risk groups.

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幼儿、老年人和慢性病患者通常是每年一度的季节性流感病死和严重并发症的最高风险群体2。

The very young, the elderly and persons with chronic medical conditions typically face the highest risks of death and serious complications from annual seasonal influenza.

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