艾滋病毒是“一个庞大且日益严重的公共卫生问题”，哈佛大学医学院遗传学教授乔治·丘奇表示。
HIV is "a large and growing public health problem", according to Harvard Medical School genetic professor George Church.
它是一个重要的全球卫生问题，也是最严重类型的病毒性肝炎。
It is a major global health problem and the most serious type of viral hepatitis.
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。
Influenza is a serious public health problem that causes severe illnesses and deaths for higher risk populations.
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